--- a/dmd/declaration.c	Fri Nov 06 21:51:41 2009 +0100
+++ b/dmd/declaration.c	Fri Nov 06 23:58:01 2009 +0100
@@ -1,1453 +1,1616 @@
-
-// Compiler implementation of the D programming language
-// Copyright (c) 1999-2009 by Digital Mars
-// All Rights Reserved
-// written by Walter Bright
-// http://www.digitalmars.com
-// License for redistribution is by either the Artistic License
-// in artistic.txt, or the GNU General Public License in gnu.txt.
-// See the included readme.txt for details.
-
-#include <stdio.h>
-#include <assert.h>
-
-#include "init.h"
-#include "declaration.h"
-#include "attrib.h"
-#include "mtype.h"
-#include "template.h"
-#include "scope.h"
-#include "aggregate.h"
-#include "module.h"
-#include "id.h"
-#include "expression.h"
-#include "hdrgen.h"
-
-/********************************* Declaration ****************************/
-
-Declaration::Declaration(Identifier *id)
-    : Dsymbol(id)
-{
-    type = NULL;
-    originalType = NULL;
-    storage_class = STCundefined;
-    protection = PROTundefined;
-    linkage = LINKdefault;
-    inuse = 0;
-}
-
-void Declaration::semantic(Scope *sc)
-{
-}
-
-const char *Declaration::kind()
-{
-    return "declaration";
-}
-
-unsigned Declaration::size(Loc loc)
-{
-    assert(type);
-    return type->size();
-}
-
-int Declaration::isStaticConstructor()
-{
-    return FALSE;
-}
-
-int Declaration::isStaticDestructor()
-{
-    return FALSE;
-}
-
-int Declaration::isDelete()
-{
-    return FALSE;
-}
-
-int Declaration::isDataseg()
-{
-    return FALSE;
-}
-
-int Declaration::isCodeseg()
-{
-    return FALSE;
-}
-
-enum PROT Declaration::prot()
-{
-    return protection;
-}
-
-/*************************************
- * Check to see if declaration can be modified in this context (sc).
- * Issue error if not.
- */
-
-#if DMDV2
-void Declaration::checkModify(Loc loc, Scope *sc, Type *t)
-{
-    if (sc->incontract && isParameter())
-	error(loc, "cannot modify parameter '%s' in contract", toChars());
-
-    if (isCtorinit())
-    {	// It's only modifiable if inside the right constructor
-	Dsymbol *s = sc->func;
-	while (1)
-	{
-	    FuncDeclaration *fd = NULL;
-	    if (s)
-		fd = s->isFuncDeclaration();
-	    if (fd &&
-		((fd->isCtorDeclaration() && storage_class & STCfield) ||
-		 (fd->isStaticCtorDeclaration() && !(storage_class & STCfield))) &&
-		fd->toParent() == toParent()
-	       )
-	    {
-		VarDeclaration *v = isVarDeclaration();
-		assert(v);
-		v->ctorinit = 1;
-		//printf("setting ctorinit\n");
-	    }
-	    else
-	    {
-		if (s)
-		{   s = s->toParent2();
-		    continue;
-		}
-		else
-		{
-		    const char *p = isStatic() ? "static " : "";
-		    error(loc, "can only initialize %sconst %s inside %sconstructor",
-			p, toChars(), p);
-		}
-	    }
-	    break;
-	}
-    }
-    else
-    {
-	VarDeclaration *v = isVarDeclaration();
-	if (v && v->canassign == 0)
-	{
-	    char *p = NULL;
-	    if (isConst())
-		p = "const";
-	    else if (isInvariant())
-		p = "invariant";
-	    else if (storage_class & STCmanifest)
-		p = "manifest constant";
-	    else if (!t->isAssignable())
-		p = "struct with immutable members";
-	    if (p)
-	    {	error(loc, "cannot modify %s", p);
-		halt();
-	    }
-	}
-    }
-}
-#endif
-
-
-/********************************* TupleDeclaration ****************************/
-
-TupleDeclaration::TupleDeclaration(Loc loc, Identifier *id, Objects *objects)
-    : Declaration(id)
-{
-    this->type = NULL;
-    this->objects = objects;
-    this->isexp = 0;
-    this->tupletype = NULL;
-}
-
-Dsymbol *TupleDeclaration::syntaxCopy(Dsymbol *s)
-{
-    assert(0);
-    return NULL;
-}
-
-const char *TupleDeclaration::kind()
-{
-    return "tuple";
-}
-
-Type *TupleDeclaration::getType()
-{
-    /* If this tuple represents a type, return that type
-     */
-
-    //printf("TupleDeclaration::getType() %s\n", toChars());
-    if (isexp)
-	return NULL;
-    if (!tupletype)
-    {
-	/* It's only a type tuple if all the Object's are types
-	 */
-	for (size_t i = 0; i < objects->dim; i++)
-	{   Object *o = (Object *)objects->data[i];
-
-	    if (o->dyncast() != DYNCAST_TYPE)
-	    {
-		//printf("\tnot[%d], %p, %d\n", i, o, o->dyncast());
-		return NULL;
-	    }
-	}
-
-	/* We know it's a type tuple, so build the TypeTuple
-	 */
-	Arguments *args = new Arguments();
-	args->setDim(objects->dim);
-	OutBuffer buf;
-	for (size_t i = 0; i < objects->dim; i++)
-	{   Type *t = (Type *)objects->data[i];
-
-	    //printf("type = %s\n", t->toChars());
-#if 0
-	    buf.printf("_%s_%d", ident->toChars(), i);
-	    char *name = (char *)buf.extractData();
-	    Identifier *id = new Identifier(name, TOKidentifier);
-	    Argument *arg = new Argument(STCin, t, id, NULL);
-#else
-	    Argument *arg = new Argument(STCin, t, NULL, NULL);
-#endif
-	    args->data[i] = (void *)arg;
-	}
-
-	tupletype = new TypeTuple(args);
-    }
-
-    return tupletype;
-}
-
-int TupleDeclaration::needThis()
-{
-    //printf("TupleDeclaration::needThis(%s)\n", toChars());
-    for (size_t i = 0; i < objects->dim; i++)
-    {   Object *o = (Object *)objects->data[i];
-	if (o->dyncast() == DYNCAST_EXPRESSION)
-	{   Expression *e = (Expression *)o;
-	    if (e->op == TOKdsymbol)
-	    {	DsymbolExp *ve = (DsymbolExp *)e;
-		Declaration *d = ve->s->isDeclaration();
-		if (d && d->needThis())
-		{
-		    return 1;
-		}
-	    }
-	}
-    }
-    return 0;
-}
-
-/********************************* TypedefDeclaration ****************************/
-
-TypedefDeclaration::TypedefDeclaration(Loc loc, Identifier *id, Type *basetype, Initializer *init)
-    : Declaration(id)
-{
-    this->type = new TypeTypedef(this);
-    this->basetype = basetype->toBasetype();
-    this->init = init;
-#ifdef _DH
-    this->htype = NULL;
-    this->hbasetype = NULL;
-#endif
-    this->sem = 0;
-    this->loc = loc;
-#if IN_DMD
-    this->sinit = NULL;
-#endif
-}
-
-Dsymbol *TypedefDeclaration::syntaxCopy(Dsymbol *s)
-{
-    Type *basetype = this->basetype->syntaxCopy();
-
-    Initializer *init = NULL;
-    if (this->init)
-	init = this->init->syntaxCopy();
-
-    assert(!s);
-    TypedefDeclaration *st;
-    st = new TypedefDeclaration(loc, ident, basetype, init);
-#ifdef _DH
-    // Syntax copy for header file
-    if (!htype)      // Don't overwrite original
-    {	if (type)    // Make copy for both old and new instances
-	{   htype = type->syntaxCopy();
-	    st->htype = type->syntaxCopy();
-	}
-    }
-    else            // Make copy of original for new instance
-        st->htype = htype->syntaxCopy();
-    if (!hbasetype)
-    {	if (basetype)
-	{   hbasetype = basetype->syntaxCopy();
-	    st->hbasetype = basetype->syntaxCopy();
-	}
-    }
-    else
-        st->hbasetype = hbasetype->syntaxCopy();
-#endif
-    return st;
-}
-
-void TypedefDeclaration::semantic(Scope *sc)
-{
-    //printf("TypedefDeclaration::semantic(%s) sem = %d\n", toChars(), sem);
-    if (sem == 0)
-    {	sem = 1;
-	basetype = basetype->semantic(loc, sc);
-	sem = 2;
-	type = type->semantic(loc, sc);
-	if (sc->parent->isFuncDeclaration() && init)
-	    semantic2(sc);
-	storage_class |= sc->stc & STCdeprecated;
-    }
-    else if (sem == 1)
-    {
-	error("circular definition");
-    }
-}
-
-void TypedefDeclaration::semantic2(Scope *sc)
-{
-    //printf("TypedefDeclaration::semantic2(%s) sem = %d\n", toChars(), sem);
-    if (sem == 2)
-    {	sem = 3;
-	if (init)
-	{
-	    init = init->semantic(sc, basetype);
-
-	    ExpInitializer *ie = init->isExpInitializer();
-	    if (ie)
-	    {
-		if (ie->exp->type == basetype)
-		    ie->exp->type = type;
-	    }
-	}
-    }
-}
-
-const char *TypedefDeclaration::kind()
-{
-    return "typedef";
-}
-
-Type *TypedefDeclaration::getType()
-{
-    return type;
-}
-
-void TypedefDeclaration::toCBuffer(OutBuffer *buf, HdrGenState *hgs)
-{
-    buf->writestring("typedef ");
-    basetype->toCBuffer(buf, ident, hgs);
-    if (init)
-    {
-	buf->writestring(" = ");
-	init->toCBuffer(buf, hgs);
-    }
-    buf->writeByte(';');
-    buf->writenl();
-}
-
-/********************************* AliasDeclaration ****************************/
-
-AliasDeclaration::AliasDeclaration(Loc loc, Identifier *id, Type *type)
-    : Declaration(id)
-{
-    //printf("AliasDeclaration(id = '%s', type = %p)\n", id->toChars(), type);
-    //printf("type = '%s'\n", type->toChars());
-    this->loc = loc;
-    this->type = type;
-    this->aliassym = NULL;
-#ifdef _DH
-    this->htype = NULL;
-    this->haliassym = NULL;
-#endif
-    this->overnext = NULL;
-    this->inSemantic = 0;
-    this->importprot = PROTundefined;
-    assert(type);
-}
-
-AliasDeclaration::AliasDeclaration(Loc loc, Identifier *id, Dsymbol *s)
-    : Declaration(id)
-{
-    //printf("AliasDeclaration(id = '%s', s = %p)\n", id->toChars(), s);
-    assert(s != this);
-    this->loc = loc;
-    this->type = NULL;
-    this->aliassym = s;
-#ifdef _DH
-    this->htype = NULL;
-    this->haliassym = NULL;
-#endif
-    this->overnext = NULL;
-    this->inSemantic = 0;
-    assert(s);
-}
-
-Dsymbol *AliasDeclaration::syntaxCopy(Dsymbol *s)
-{
-    //printf("AliasDeclaration::syntaxCopy()\n");
-    assert(!s);
-    AliasDeclaration *sa;
-    if (type)
-	sa = new AliasDeclaration(loc, ident, type->syntaxCopy());
-    else
-	sa = new AliasDeclaration(loc, ident, aliassym->syntaxCopy(NULL));
-#ifdef _DH
-    // Syntax copy for header file
-    if (!htype)	    // Don't overwrite original
-    {	if (type)	// Make copy for both old and new instances
-	{   htype = type->syntaxCopy();
-	    sa->htype = type->syntaxCopy();
-	}
-    }
-    else			// Make copy of original for new instance
-	sa->htype = htype->syntaxCopy();
-    if (!haliassym)
-    {	if (aliassym)
-	{   haliassym = aliassym->syntaxCopy(s);
-	    sa->haliassym = aliassym->syntaxCopy(s);
-	}
-    }
-    else
-	sa->haliassym = haliassym->syntaxCopy(s);
-#endif
-    return sa;
-}
-
-void AliasDeclaration::semantic(Scope *sc)
-{
-    //printf("AliasDeclaration::semantic() %s\n", toChars());
-    if (aliassym)
-    {
-	if (aliassym->isTemplateInstance())
-	    aliassym->semantic(sc);
-	return;
-    }
-    this->inSemantic = 1;
-
-    if (storage_class & STCconst)
-	error("cannot be const");
-
-    storage_class |= sc->stc & STCdeprecated;
-
-    // Given:
-    //	alias foo.bar.abc def;
-    // it is not knowable from the syntax whether this is an alias
-    // for a type or an alias for a symbol. It is up to the semantic()
-    // pass to distinguish.
-    // If it is a type, then type is set and getType() will return that
-    // type. If it is a symbol, then aliassym is set and type is NULL -
-    // toAlias() will return aliasssym.
-
-    Dsymbol *s;
-    Type *t;
-    Expression *e;
-
-    /* This section is needed because resolve() will:
-     *   const x = 3;
-     *   alias x y;
-     * try to alias y to 3.
-     */
-    s = type->toDsymbol(sc);
-    if (s)
-	goto L2;			// it's a symbolic alias
-
-    //printf("alias type is %s\n", type->toChars());
-    type->resolve(loc, sc, &e, &t, &s);
-    if (s)
-    {
-	goto L2;
-    }
-    else if (e)
-    {
-	// Try to convert Expression to Dsymbol
-        if (e->op == TOKvar)
-	{   s = ((VarExp *)e)->var;
-	    goto L2;
-	}
-        else if (e->op == TOKfunction)
-	{   s = ((FuncExp *)e)->fd;
-	    goto L2;
-	}
-        else
-	{   error("cannot alias an expression %s", e->toChars());
-	    t = e->type;
-	}
-    }
-    else if (t)
-    {
-	type = t;
-    }
-    if (overnext)
-	ScopeDsymbol::multiplyDefined(0, this, overnext);
-    this->inSemantic = 0;
-    return;
-
-  L2:
-    //printf("alias is a symbol %s %s\n", s->kind(), s->toChars());
-    type = NULL;
-    VarDeclaration *v = s->isVarDeclaration();
-    if (v && v->linkage == LINKdefault)
-    {
-	error("forward reference of %s", v->toChars());
-	s = NULL;
-    }
-    else
-    {
-	FuncDeclaration *f = s->toAlias()->isFuncDeclaration();
-	if (f)
-	{
-	    if (overnext)
-	    {
-		FuncAliasDeclaration *fa = new FuncAliasDeclaration(f);
-		fa->importprot = importprot;
-		if (!fa->overloadInsert(overnext))
-		    ScopeDsymbol::multiplyDefined(0, f, overnext);
-		overnext = NULL;
-		s = fa;
-		s->parent = sc->parent;
-	    }
-	}
-	if (overnext)
-	    ScopeDsymbol::multiplyDefined(0, s, overnext);
-	if (s == this)
-	{
-	    assert(global.errors);
-	    s = NULL;
-	}
-    }
-    aliassym = s;
-    this->inSemantic = 0;
-}
-
-int AliasDeclaration::overloadInsert(Dsymbol *s)
-{
-    /* Don't know yet what the aliased symbol is, so assume it can
-     * be overloaded and check later for correctness.
-     */
-
-    //printf("AliasDeclaration::overloadInsert('%s')\n", s->toChars());
-    if (overnext == NULL)
-    {	overnext = s;
-	return TRUE;
-    }
-    else
-    {
-	return overnext->overloadInsert(s);
-    }
-}
-
-const char *AliasDeclaration::kind()
-{
-    return "alias";
-}
-
-Type *AliasDeclaration::getType()
-{
-    return type;
-}
-
-Dsymbol *AliasDeclaration::toAlias()
-{
-    //printf("AliasDeclaration::toAlias('%s', this = %p, aliassym = %p, kind = '%s')\n", toChars(), this, aliassym, aliassym ? aliassym->kind() : "");
-    assert(this != aliassym);
-    //static int count; if (++count == 10) *(char*)0=0;
-    if (inSemantic)
-    {	error("recursive alias declaration");
-	aliassym = new TypedefDeclaration(loc, ident, Type::terror, NULL);
-    }
-    Dsymbol *s = aliassym ? aliassym->toAlias() : this;
-    return s;
-}
-
-void AliasDeclaration::toCBuffer(OutBuffer *buf, HdrGenState *hgs)
-{
-    buf->writestring("alias ");
-#if 0 && _DH
-    if (hgs->hdrgen)
-    {
-	if (haliassym)
-	{
-	    buf->writestring(haliassym->toChars());
-	    buf->writeByte(' ');
-	    buf->writestring(ident->toChars());
-	}
-	else
-	    htype->toCBuffer(buf, ident, hgs);
-    }
-    else
-#endif
-    {
-	if (aliassym)
-	{
-	    buf->writestring(aliassym->toChars());
-	    buf->writeByte(' ');
-	    buf->writestring(ident->toChars());
-	}
-	else
-	    type->toCBuffer(buf, ident, hgs);
-    }
-    buf->writeByte(';');
-    buf->writenl();
-}
-
-/********************************* VarDeclaration ****************************/
-
-VarDeclaration::VarDeclaration(Loc loc, Type *type, Identifier *id, Initializer *init)
-    : Declaration(id)
-{
-    //printf("VarDeclaration('%s')\n", id->toChars());
-#ifdef DEBUG
-    if (!type && !init)
-    {	printf("VarDeclaration('%s')\n", id->toChars());
-	//*(char*)0=0;
-    }
-#endif
-    assert(type || init);
-    this->type = type;
-    this->init = init;
-#ifdef _DH
-    this->htype = NULL;
-    this->hinit = NULL;
-#endif
-    this->loc = loc;
-    offset = 0;
-    noscope = 0;
-    nestedref = 0;
-    ctorinit = 0;
-    aliassym = NULL;
-    onstack = 0;
-    canassign = 0;
-    value = NULL;
-
-#if IN_LLVM
-    aggrIndex = 0;
-
-    // LDC
-    anonDecl = NULL;
-    offset2 = 0;
-
-    nakedUse = false;
-
-    availableExternally = true; // assume this unless proven otherwise
-#endif
-}
-
-Dsymbol *VarDeclaration::syntaxCopy(Dsymbol *s)
-{
-    //printf("VarDeclaration::syntaxCopy(%s)\n", toChars());
-
-    VarDeclaration *sv;
-    if (s)
-    {	sv = (VarDeclaration *)s;
-    }
-    else
-    {
-	Initializer *init = NULL;
-	if (this->init)
-	{   init = this->init->syntaxCopy();
-	    //init->isExpInitializer()->exp->print();
-	    //init->isExpInitializer()->exp->dump(0);
-	}
-
-	sv = new VarDeclaration(loc, type ? type->syntaxCopy() : NULL, ident, init);
-	sv->storage_class = storage_class;
-    }
-#ifdef _DH
-    // Syntax copy for header file
-    if (!htype)      // Don't overwrite original
-    {	if (type)    // Make copy for both old and new instances
-	{   htype = type->syntaxCopy();
-	    sv->htype = type->syntaxCopy();
-	}
-    }
-    else            // Make copy of original for new instance
-        sv->htype = htype->syntaxCopy();
-    if (!hinit)
-    {	if (init)
-	{   hinit = init->syntaxCopy();
-	    sv->hinit = init->syntaxCopy();
-	}
-    }
-    else
-        sv->hinit = hinit->syntaxCopy();
-#endif
-    return sv;
-}
-
-void VarDeclaration::semantic(Scope *sc)
-{
-    //printf("VarDeclaration::semantic('%s', parent = '%s')\n", toChars(), sc->parent->toChars());
-    //printf(" type = %s\n", type ? type->toChars() : "null");
-    //printf(" stc = x%x\n", sc->stc);
-    //printf(" storage_class = x%x\n", storage_class);
-    //printf("linkage = %d\n", sc->linkage);
-    //if (strcmp(toChars(), "mul") == 0) halt();
-
-    storage_class |= sc->stc;
-    if (storage_class & STCextern && init)
-	error("extern symbols cannot have initializers");
-
-    /* If auto type inference, do the inference
-     */
-    int inferred = 0;
-    if (!type)
-    {	inuse++;
-	type = init->inferType(sc);
-	inuse--;
-	inferred = 1;
-
-	/* This is a kludge to support the existing syntax for RAII
-	 * declarations.
-	 */
-	storage_class &= ~STCauto;
-	originalType = type;
-    }
-    else
-    {	if (!originalType)
-	    originalType = type;
-	type = type->semantic(loc, sc);
-    }
-    //printf(" semantic type = %s\n", type ? type->toChars() : "null");
-
-    type->checkDeprecated(loc, sc);
-    linkage = sc->linkage;
-    this->parent = sc->parent;
-    //printf("this = %p, parent = %p, '%s'\n", this, parent, parent->toChars());
-    protection = sc->protection;
-    //printf("sc->stc = %x\n", sc->stc);
-    //printf("storage_class = x%x\n", storage_class);
-
-    Dsymbol *parent = toParent();
-    FuncDeclaration *fd = parent->isFuncDeclaration();
-
-    Type *tb = type->toBasetype();
-    if (tb->ty == Tvoid && !(storage_class & STClazy))
-    {	error("voids have no value");
-	type = Type::terror;
-	tb = type;
-    }
-    if (tb->ty == Tfunction)
-    {	error("cannot be declared to be a function");
-	type = Type::terror;
-	tb = type;
-    }
-    if (tb->ty == Tstruct)
-    {	TypeStruct *ts = (TypeStruct *)tb;
-
-	if (!ts->sym->members)
-	{
-	    error("no definition of struct %s", ts->toChars());
-	}
-    }
-    if ((storage_class & STCauto) && !inferred)
-	error("both auto and explicit type given");
-
-    if (tb->ty == Ttuple)
-    {   /* Instead, declare variables for each of the tuple elements
-	 * and add those.
-	 */
-	TypeTuple *tt = (TypeTuple *)tb;
-	size_t nelems = Argument::dim(tt->arguments);
-	Objects *exps = new Objects();
-	exps->setDim(nelems);
-	Expression *ie = init ? init->toExpression() : NULL;
-
-	for (size_t i = 0; i < nelems; i++)
-	{   Argument *arg = Argument::getNth(tt->arguments, i);
-
-	    OutBuffer buf;
-	    buf.printf("_%s_field_%zu", ident->toChars(), i);
-	    buf.writeByte(0);
-	    char *name = (char *)buf.extractData();
-	    Identifier *id = new Identifier(name, TOKidentifier);
-
-	    Expression *einit = ie;
-	    if (ie && ie->op == TOKtuple)
-	    {	einit = (Expression *)((TupleExp *)ie)->exps->data[i];
-	    }
-	    Initializer *ti = init;
-	    if (einit)
-	    {	ti = new ExpInitializer(einit->loc, einit);
-	    }
-
-	    VarDeclaration *v = new VarDeclaration(loc, arg->type, id, ti);
-	    //printf("declaring field %s of type %s\n", v->toChars(), v->type->toChars());
-	    v->semantic(sc);
-            
-/*
-// removed for LDC since TupleDeclaration::toObj already creates the fields;
-// adding them to the scope again leads to duplicates
-	    if (sc->scopesym)
-	    {	//printf("adding %s to %s\n", v->toChars(), sc->scopesym->toChars());
-		if (sc->scopesym->members)
-		    sc->scopesym->members->push(v);
-	    }
-*/
-	    Expression *e = new DsymbolExp(loc, v);
-	    exps->data[i] = e;
-	}
-	TupleDeclaration *v2 = new TupleDeclaration(loc, ident, exps);
-	v2->isexp = 1;
-	aliassym = v2;
-	return;
-    }
-
-    if (storage_class & STCconst && !init && !fd)
-	// Initialize by constructor only
-	storage_class = (storage_class & ~STCconst) | STCctorinit;
-
-    if (isConst())
-    {
-    }
-    else if (isStatic())
-    {
-    }
-    else if (isSynchronized())
-    {
-	error("variable %s cannot be synchronized", toChars());
-    }
-    else if (isOverride())
-    {
-	error("override cannot be applied to variable");
-    }
-    else if (isAbstract())
-    {
-	error("abstract cannot be applied to variable");
-    }
-    else if (storage_class & STCtemplateparameter)
-    {
-    }
-    else
-    {
-	AggregateDeclaration *aad = sc->anonAgg;
-	if (!aad)
-	    aad = parent->isAggregateDeclaration();
-	if (aad)
-	{
-	    aad->addField(sc, this);
-	}
-
-	InterfaceDeclaration *id = parent->isInterfaceDeclaration();
-	if (id)
-	{
-	    error("field not allowed in interface");
-	}
-
-	/* Templates cannot add fields to aggregates
-	 */
-	TemplateInstance *ti = parent->isTemplateInstance();
-	if (ti)
-	{
-	    // Take care of nested templates
-	    while (1)
-	    {
-		TemplateInstance *ti2 = ti->tempdecl->parent->isTemplateInstance();
-		if (!ti2)
-		    break;
-		ti = ti2;
-	    }
-
-	    // If it's a member template
-	    AggregateDeclaration *ad = ti->tempdecl->isMember();
-	    if (ad && storage_class != STCundefined)
-	    {
-		error("cannot use template to add field to aggregate '%s'", ad->toChars());
-	    }
-	}
-    }
-
-    if (type->isscope() && !noscope)
-    {
-	if (storage_class & (STCfield | STCout | STCref | STCstatic) || !fd)
-	{
-	    error("globals, statics, fields, ref and out parameters cannot be scope");
-	}
-
-	if (!(storage_class & STCscope))
-	{
-	    if (!(storage_class & STCparameter) && ident != Id::withSym)
-		error("reference to scope class must be scope");
-	}
-    }
-
-    if (!init && !sc->inunion && !isStatic() && !isConst() && fd &&
-	!(storage_class & (STCfield | STCin | STCforeach)) &&
-	type->size() != 0)
-    {
-	// Provide a default initializer
-	//printf("Providing default initializer for '%s'\n", toChars());
-	if (type->ty == Tstruct &&
-	    ((TypeStruct *)type)->sym->zeroInit == 1)
-	{   /* If a struct is all zeros, as a special case
-	     * set it's initializer to the integer 0.
-	     * In AssignExp::toElem(), we check for this and issue
-	     * a memset() to initialize the struct.
-	     * Must do same check in interpreter.
-	     */
-	    Expression *e = new IntegerExp(loc, 0, Type::tint32);
-	    Expression *e1;
-	    e1 = new VarExp(loc, this);
-	    e = new AssignExp(loc, e1, e);
-	    e->type = e1->type;
-	    init = new ExpInitializer(loc, e/*->type->defaultInit()*/);
-	    return;
-	}
-	else if (type->ty == Ttypedef)
-	{   TypeTypedef *td = (TypeTypedef *)type;
-	    if (td->sym->init)
-	    {	init = td->sym->init;
-		ExpInitializer *ie = init->isExpInitializer();
-		if (ie)
-		    // Make copy so we can modify it
-		    init = new ExpInitializer(ie->loc, ie->exp);
-	    }
-	    else
-		init = getExpInitializer();
-	}
-	else
-	{
-	    init = getExpInitializer();
-	}
-    }
-
-    if (init)
-    {
-	sc = sc->push();
-	sc->stc &= ~(STCconst | STCinvariant | STCpure);
-
-	ArrayInitializer *ai = init->isArrayInitializer();
-	if (ai && tb->ty == Taarray)
-	{
-	    init = ai->toAssocArrayInitializer();
-	}
-
-	StructInitializer *si = init->isStructInitializer();
-	ExpInitializer *ei = init->isExpInitializer();
-
-	// See if we can allocate on the stack
-	if (ei && isScope() && ei->exp->op == TOKnew)
-	{   NewExp *ne = (NewExp *)ei->exp;
-	    if (!(ne->newargs && ne->newargs->dim))
-	    {	ne->onstack = 1;
-		onstack = 1;
-		if (type->isBaseOf(ne->newtype->semantic(loc, sc), NULL))
-		    onstack = 2;
-	    }
-	}
-
-	// If inside function, there is no semantic3() call
-	if (sc->func)
-	{
-	    // If local variable, use AssignExp to handle all the various
-	    // possibilities.
-	    if (fd && !isStatic() && !isConst() && !init->isVoidInitializer())
-	    {
-		//printf("fd = '%s', var = '%s'\n", fd->toChars(), toChars());
-		if (!ei)
-		{
-		    Expression *e = init->toExpression();
-		    if (!e)
-		    {
-			init = init->semantic(sc, type);
-			e = init->toExpression();
-			if (!e)
-			{   error("is not a static and cannot have static initializer");
-			    return;
-			}
-		    }
-		    ei = new ExpInitializer(init->loc, e);
-		    init = ei;
-		}
-
-		Expression *e1 = new VarExp(loc, this);
-
-		Type *t = type->toBasetype();
-		if (t->ty == Tsarray)
-		{
-		    ei->exp = ei->exp->semantic(sc);
-		    if (!ei->exp->implicitConvTo(type))
-		    {
-			int dim = ((TypeSArray *)t)->dim->toInteger();
-			// If multidimensional static array, treat as one large array
-			while (1)
-			{
-			    t = t->nextOf()->toBasetype();
-			    if (t->ty != Tsarray)
-				break;
-			    dim *= ((TypeSArray *)t)->dim->toInteger();
-			    e1->type = new TypeSArray(t->nextOf(), new IntegerExp(0, dim, Type::tindex));
-			}
-		    }
-		    e1 = new SliceExp(loc, e1, NULL, NULL);
-		}
-		else if (t->ty == Tstruct)
-		{
-		    ei->exp = ei->exp->semantic(sc);
-		    if (!ei->exp->implicitConvTo(type))
-			ei->exp = new CastExp(loc, ei->exp, type);
-		}
-		ei->exp = new AssignExp(loc, e1, ei->exp);
-		ei->exp->op = TOKconstruct;
-		canassign++;
-		ei->exp = ei->exp->semantic(sc);
-		canassign--;
-		ei->exp->optimize(WANTvalue);
-	    }
-	    else
-	    {
-		init = init->semantic(sc, type);
-		if (fd && isConst() && !isStatic())
-		{   // Make it static
-		    storage_class |= STCstatic;
-		}
-	    }
-	}
-	else if (isConst() || isFinal())
-	{
-	    /* Because we may need the results of a const declaration in a
-	     * subsequent type, such as an array dimension, before semantic2()
-	     * gets ordinarily run, try to run semantic2() now.
-	     * Ignore failure.
-	     */
-
-	    if (!global.errors && !inferred)
-	    {
-		unsigned errors = global.errors;
-		global.gag++;
-		//printf("+gag\n");
-		Expression *e;
-		Initializer *i2 = init;
-		inuse++;
-		if (ei)
-		{
-		    e = ei->exp->syntaxCopy();
-		    e = e->semantic(sc);
-		    e = e->implicitCastTo(sc, type);
-		}
-		else if (si || ai)
-		{   i2 = init->syntaxCopy();
-		    i2 = i2->semantic(sc, type);
-		}
-		inuse--;
-		global.gag--;
-		//printf("-gag\n");
-		if (errors != global.errors)	// if errors happened
-		{
-		    if (global.gag == 0)
-			global.errors = errors;	// act as if nothing happened
-		}
-		else if (ei)
-		{
-		    e = e->optimize(WANTvalue | WANTinterpret);
-		    if (e->op == TOKint64 || e->op == TOKstring)
-		    {
-			ei->exp = e;		// no errors, keep result
-		    }
-		}
-		else
-		    init = i2;		// no errors, keep result
-	    }
-	}
-	sc = sc->pop();
-    }
-}
-
-ExpInitializer *VarDeclaration::getExpInitializer()
-{
-    ExpInitializer *ei;
-
-    if (init)
-	ei = init->isExpInitializer();
-    else
-    {
-	Expression *e = type->defaultInit(loc);
-	if (e)
-	    ei = new ExpInitializer(loc, e);
-	else
-	    ei = NULL;
-    }
-    return ei;
-}
-
-void VarDeclaration::semantic2(Scope *sc)
-{
-    //printf("VarDeclaration::semantic2('%s')\n", toChars());
-    if (init && !toParent()->isFuncDeclaration())
-    {	inuse++;
-#if 0
-	ExpInitializer *ei = init->isExpInitializer();
-	if (ei)
-	{
-	    ei->exp->dump(0);
-	    printf("type = %p\n", ei->exp->type);
-	}
-#endif
-	init = init->semantic(sc, type);
-	inuse--;
-    }
-}
-
-void VarDeclaration::semantic3(Scope *sc)
-{
-    // LDC
-    if (!global.params.useAvailableExternally)
-        availableExternally = false;
-
-    // Preserve call chain
-    Declaration::semantic3(sc);
-}
-
-const char *VarDeclaration::kind()
-{
-    return "variable";
-}
-
-Dsymbol *VarDeclaration::toAlias()
-{
-    //printf("VarDeclaration::toAlias('%s', this = %p, aliassym = %p)\n", toChars(), this, aliassym);
-    assert(this != aliassym);
-    Dsymbol *s = aliassym ? aliassym->toAlias() : this;
-    return s;
-}
-
-void VarDeclaration::toCBuffer(OutBuffer *buf, HdrGenState *hgs)
-{
-    StorageClassDeclaration::stcToCBuffer(buf, storage_class);
-
-    /* If changing, be sure and fix CompoundDeclarationStatement::toCBuffer()
-     * too.
-     */
-    if (type)
-	type->toCBuffer(buf, ident, hgs);
-    else
-	buf->writestring(ident->toChars());
-    if (init)
-    {	buf->writestring(" = ");
-	init->toCBuffer(buf, hgs);
-    }
-    buf->writeByte(';');
-    buf->writenl();
-}
-
-int VarDeclaration::needThis()
-{
-    //printf("VarDeclaration::needThis(%s, x%x)\n", toChars(), storage_class);
-    return storage_class & STCfield;
-}
-
-int VarDeclaration::isImportedSymbol()
-{
-    if (protection == PROTexport && !init && (isStatic() || isConst() || parent->isModule()))
-	return TRUE;
-    return FALSE;
-}
-
-void VarDeclaration::checkCtorConstInit()
-{
-    if (ctorinit == 0 && isCtorinit() && !(storage_class & STCfield))
-	error("missing initializer in static constructor for const variable");
-}
-
-/************************************
- * Check to see if this variable is actually in an enclosing function
- * rather than the current one.
- */
-
-void VarDeclaration::checkNestedReference(Scope *sc, Loc loc)
-{
-    //printf("VarDeclaration::checkNestedReference() %s\n", toChars());
-    if (parent && !isDataseg() && parent != sc->parent)
-    {
-	// The function that this variable is in
-	FuncDeclaration *fdv = toParent()->isFuncDeclaration();
-	// The current function
-	FuncDeclaration *fdthis = sc->parent->isFuncDeclaration();
-
-	if (fdv && fdthis)
-	{
-	    if (loc.filename)
-		fdthis->getLevel(loc, fdv);
-	    nestedref = 1;
-	    fdv->nestedFrameRef = 1;
-#if IN_LLVM
-#if DMDV1
-        fdv->nestedVars.insert(this);
-#endif
-#endif
-	    //printf("var %s in function %s is nested ref\n", toChars(), fdv->toChars());
-	}
-    }
-}
-
-/*******************************
- * Does symbol go into data segment?
- * Includes extern variables.
- */
-
-int VarDeclaration::isDataseg()
-{
-#if 0
-    printf("VarDeclaration::isDataseg(%p, '%s')\n", this, toChars());
-    printf("%x, %p, %p\n", storage_class & (STCstatic | STCconst), parent->isModule(), parent->isTemplateInstance());
-    printf("parent = '%s'\n", parent->toChars());
-#endif
-    Dsymbol *parent = this->toParent();
-    if (!parent && !(storage_class & (STCstatic | STCconst)))
-    {	error("forward referenced");
-	type = Type::terror;
-	return 0;
-    }
-    return (storage_class & (STCstatic | STCconst) ||
-	   parent->isModule() ||
-	   parent->isTemplateInstance());
-}
-
-int VarDeclaration::hasPointers()
-{
-    return (!isDataseg() && type->hasPointers());
-}
-
-int VarDeclaration::isSameAsInitializer()
-{
-    if (init && init->isExpInitializer() && 
-        init->isExpInitializer()->exp->op == TOKstructliteral)
-        return 0;
-    return isConst();
-}
-
-/******************************************
- * If a variable has an scope destructor call, return call for it.
- * Otherwise, return NULL.
- */
-
-Expression *VarDeclaration::callScopeDtor()
-{   Expression *e = NULL;
-
-    //printf("VarDeclaration::callScopeDtor() %s\n", toChars());
-    if (storage_class & STCscope && !noscope)
-    {
-	for (ClassDeclaration *cd = type->isClassHandle();
-	     cd;
-	     cd = cd->baseClass)
-	{
-	    /* We can do better if there's a way with onstack
-	     * classes to determine if there's no way the monitor
-	     * could be set.
-	     */
-	    //if (cd->isInterfaceDeclaration())
-		//error("interface %s cannot be scope", cd->toChars());
-	    if (1 || onstack || cd->dtors.dim)	// if any destructors
-	    {
-		// delete this;
-		Expression *ec;
-
-		ec = new VarExp(loc, this);
-		e = new DeleteExp(loc, ec);
-		e->type = Type::tvoid;
-		break;
-	    }
-	}
-    }
-    return e;
-}
-
-
-/********************************* ClassInfoDeclaration ****************************/
-
-ClassInfoDeclaration::ClassInfoDeclaration(ClassDeclaration *cd)
-    : VarDeclaration(0, ClassDeclaration::classinfo->type, cd->ident, NULL)
-{
-    this->cd = cd;
-    storage_class = STCstatic;
-}
-
-Dsymbol *ClassInfoDeclaration::syntaxCopy(Dsymbol *s)
-{
-    assert(0);		// should never be produced by syntax
-    return NULL;
-}
-
-void ClassInfoDeclaration::semantic(Scope *sc)
-{
-}
-
-/********************************* ModuleInfoDeclaration ****************************/
-
-ModuleInfoDeclaration::ModuleInfoDeclaration(Module *mod)
-    : VarDeclaration(0, Module::moduleinfo->type, mod->ident, NULL)
-{
-    this->mod = mod;
-    storage_class = STCstatic;
-}
-
-Dsymbol *ModuleInfoDeclaration::syntaxCopy(Dsymbol *s)
-{
-    assert(0);		// should never be produced by syntax
-    return NULL;
-}
-
-void ModuleInfoDeclaration::semantic(Scope *sc)
-{
-}
-
-/********************************* TypeInfoDeclaration ****************************/
-
-TypeInfoDeclaration::TypeInfoDeclaration(Type *tinfo, int internal)
-    : VarDeclaration(0, Type::typeinfo->type, tinfo->getTypeInfoIdent(internal), NULL)
-{
-    this->tinfo = tinfo;
-    storage_class = STCstatic;
-    protection = PROTpublic;
-    linkage = LINKc;
-}
-
-Dsymbol *TypeInfoDeclaration::syntaxCopy(Dsymbol *s)
-{
-    assert(0);		// should never be produced by syntax
-    return NULL;
-}
-
-void TypeInfoDeclaration::semantic(Scope *sc)
-{
-    assert(linkage == LINKc);
-    // LDC
-    if (!global.params.useAvailableExternally)
-        availableExternally = false;
-}
-
-/***************************** TypeInfoConstDeclaration **********************/
-
-#if DMDV2
-TypeInfoConstDeclaration::TypeInfoConstDeclaration(Type *tinfo)
-    : TypeInfoDeclaration(tinfo, 0)
-{
-}
-#endif
-
-/***************************** TypeInfoInvariantDeclaration **********************/
-
-#if DMDV2
-TypeInfoInvariantDeclaration::TypeInfoInvariantDeclaration(Type *tinfo)
-    : TypeInfoDeclaration(tinfo, 0)
-{
-}
-#endif
-
-/***************************** TypeInfoStructDeclaration **********************/
-
-TypeInfoStructDeclaration::TypeInfoStructDeclaration(Type *tinfo)
-    : TypeInfoDeclaration(tinfo, 0)
-{
-}
-
-/***************************** TypeInfoClassDeclaration ***********************/
-
-TypeInfoClassDeclaration::TypeInfoClassDeclaration(Type *tinfo)
-    : TypeInfoDeclaration(tinfo, 0)
-{
-}
-
-/***************************** TypeInfoInterfaceDeclaration *******************/
-
-TypeInfoInterfaceDeclaration::TypeInfoInterfaceDeclaration(Type *tinfo)
-    : TypeInfoDeclaration(tinfo, 0)
-{
-}
-
-/***************************** TypeInfoTypedefDeclaration *********************/
-
-TypeInfoTypedefDeclaration::TypeInfoTypedefDeclaration(Type *tinfo)
-    : TypeInfoDeclaration(tinfo, 0)
-{
-}
-
-/***************************** TypeInfoPointerDeclaration *********************/
-
-TypeInfoPointerDeclaration::TypeInfoPointerDeclaration(Type *tinfo)
-    : TypeInfoDeclaration(tinfo, 0)
-{
-}
-
-/***************************** TypeInfoArrayDeclaration ***********************/
-
-TypeInfoArrayDeclaration::TypeInfoArrayDeclaration(Type *tinfo)
-    : TypeInfoDeclaration(tinfo, 0)
-{
-}
-
-/***************************** TypeInfoStaticArrayDeclaration *****************/
-
-TypeInfoStaticArrayDeclaration::TypeInfoStaticArrayDeclaration(Type *tinfo)
-    : TypeInfoDeclaration(tinfo, 0)
-{
-}
-
-/***************************** TypeInfoAssociativeArrayDeclaration ************/
-
-TypeInfoAssociativeArrayDeclaration::TypeInfoAssociativeArrayDeclaration(Type *tinfo)
-    : TypeInfoDeclaration(tinfo, 0)
-{
-}
-
-/***************************** TypeInfoEnumDeclaration ***********************/
-
-TypeInfoEnumDeclaration::TypeInfoEnumDeclaration(Type *tinfo)
-    : TypeInfoDeclaration(tinfo, 0)
-{
-}
-
-/***************************** TypeInfoFunctionDeclaration ********************/
-
-TypeInfoFunctionDeclaration::TypeInfoFunctionDeclaration(Type *tinfo)
-    : TypeInfoDeclaration(tinfo, 0)
-{
-}
-
-/***************************** TypeInfoDelegateDeclaration ********************/
-
-TypeInfoDelegateDeclaration::TypeInfoDelegateDeclaration(Type *tinfo)
-    : TypeInfoDeclaration(tinfo, 0)
-{
-}
-
-/***************************** TypeInfoTupleDeclaration **********************/
-
-TypeInfoTupleDeclaration::TypeInfoTupleDeclaration(Type *tinfo)
-    : TypeInfoDeclaration(tinfo, 0)
-{
-}
-
-/********************************* ThisDeclaration ****************************/
-
-// For the "this" parameter to member functions
-
-ThisDeclaration::ThisDeclaration(Loc loc, Type *t)
-   : VarDeclaration(loc, t, Id::This, NULL)
-{
-    noscope = 1;
-}
-
-Dsymbol *ThisDeclaration::syntaxCopy(Dsymbol *s)
-{
-    assert(0);		// should never be produced by syntax
-    return NULL;
-}
-
-/********************** StaticStructInitDeclaration ***************************/
-
-StaticStructInitDeclaration::StaticStructInitDeclaration(Loc loc, StructDeclaration *dsym)
-    : Declaration(new Identifier("", TOKidentifier))
-{
-    this->loc = loc;
-    this->dsym = dsym;
-    storage_class |= STCconst;
-}
-
+
+// Compiler implementation of the D programming language
+// Copyright (c) 1999-2009 by Digital Mars
+// All Rights Reserved
+// written by Walter Bright
+// http://www.digitalmars.com
+// License for redistribution is by either the Artistic License
+// in artistic.txt, or the GNU General Public License in gnu.txt.
+// See the included readme.txt for details.
+
+#include <stdio.h>
+#include <assert.h>
+
+#include "init.h"
+#include "declaration.h"
+#include "attrib.h"
+#include "mtype.h"
+#include "template.h"
+#include "scope.h"
+#include "aggregate.h"
+#include "module.h"
+#include "id.h"
+#include "expression.h"
+#include "hdrgen.h"
+
+/********************************* Declaration ****************************/
+
+Declaration::Declaration(Identifier *id)
+    : Dsymbol(id)
+{
+    type = NULL;
+    originalType = NULL;
+    storage_class = STCundefined;
+    protection = PROTundefined;
+    linkage = LINKdefault;
+    inuse = 0;
+}
+
+void Declaration::semantic(Scope *sc)
+{
+}
+
+const char *Declaration::kind()
+{
+    return "declaration";
+}
+
+unsigned Declaration::size(Loc loc)
+{
+    assert(type);
+    return type->size();
+}
+
+int Declaration::isStaticConstructor()
+{
+    return FALSE;
+}
+
+int Declaration::isStaticDestructor()
+{
+    return FALSE;
+}
+
+int Declaration::isDelete()
+{
+    return FALSE;
+}
+
+int Declaration::isDataseg()
+{
+    return FALSE;
+}
+
+int Declaration::isThreadlocal()
+{
+    return FALSE;
+}
+
+int Declaration::isCodeseg()
+{
+    return FALSE;
+}
+
+enum PROT Declaration::prot()
+{
+    return protection;
+}
+
+/*************************************
+ * Check to see if declaration can be modified in this context (sc).
+ * Issue error if not.
+ */
+
+#if DMDV2
+void Declaration::checkModify(Loc loc, Scope *sc, Type *t)
+{
+    if (sc->incontract && isParameter())
+	error(loc, "cannot modify parameter '%s' in contract", toChars());
+
+    if (isCtorinit())
+    {	// It's only modifiable if inside the right constructor
+	Dsymbol *s = sc->func;
+	while (1)
+	{
+	    FuncDeclaration *fd = NULL;
+	    if (s)
+		fd = s->isFuncDeclaration();
+	    if (fd &&
+		((fd->isCtorDeclaration() && storage_class & STCfield) ||
+		 (fd->isStaticCtorDeclaration() && !(storage_class & STCfield))) &&
+		fd->toParent() == toParent()
+	       )
+	    {
+		VarDeclaration *v = isVarDeclaration();
+		assert(v);
+		v->ctorinit = 1;
+		//printf("setting ctorinit\n");
+	    }
+	    else
+	    {
+		if (s)
+		{   s = s->toParent2();
+		    continue;
+		}
+		else
+		{
+		    const char *p = isStatic() ? "static " : "";
+		    error(loc, "can only initialize %sconst %s inside %sconstructor",
+			p, toChars(), p);
+		}
+	    }
+	    break;
+	}
+    }
+    else
+    {
+	VarDeclaration *v = isVarDeclaration();
+	if (v && v->canassign == 0)
+	{
+	    const char *p = NULL;
+	    if (isConst())
+		p = "const";
+	    else if (isInvariant())
+		p = "immutable";
+	    else if (storage_class & STCmanifest)
+		p = "enum";
+	    else if (!t->isAssignable())
+		p = "struct with immutable members";
+	    if (p)
+	    {	error(loc, "cannot modify %s", p);
+	    }
+	}
+    }
+}
+#endif
+
+
+/********************************* TupleDeclaration ****************************/
+
+TupleDeclaration::TupleDeclaration(Loc loc, Identifier *id, Objects *objects)
+    : Declaration(id)
+{
+    this->type = NULL;
+    this->objects = objects;
+    this->isexp = 0;
+    this->tupletype = NULL;
+}
+
+Dsymbol *TupleDeclaration::syntaxCopy(Dsymbol *s)
+{
+    assert(0);
+    return NULL;
+}
+
+const char *TupleDeclaration::kind()
+{
+    return "tuple";
+}
+
+Type *TupleDeclaration::getType()
+{
+    /* If this tuple represents a type, return that type
+     */
+
+    //printf("TupleDeclaration::getType() %s\n", toChars());
+    if (isexp)
+	return NULL;
+    if (!tupletype)
+    {
+	/* It's only a type tuple if all the Object's are types
+	 */
+	for (size_t i = 0; i < objects->dim; i++)
+	{   Object *o = (Object *)objects->data[i];
+
+	    if (o->dyncast() != DYNCAST_TYPE)
+	    {
+		//printf("\tnot[%d], %p, %d\n", i, o, o->dyncast());
+		return NULL;
+	    }
+	}
+
+	/* We know it's a type tuple, so build the TypeTuple
+	 */
+	Arguments *args = new Arguments();
+	args->setDim(objects->dim);
+	OutBuffer buf;
+	int hasdeco = 1;
+	for (size_t i = 0; i < objects->dim; i++)
+	{   Type *t = (Type *)objects->data[i];
+
+	    //printf("type = %s\n", t->toChars());
+#if 0
+	    buf.printf("_%s_%d", ident->toChars(), i);
+	    char *name = (char *)buf.extractData();
+	    Identifier *id = new Identifier(name, TOKidentifier);
+	    Argument *arg = new Argument(STCin, t, id, NULL);
+#else
+	    Argument *arg = new Argument(STCin, t, NULL, NULL);
+#endif
+	    args->data[i] = (void *)arg;
+	    if (!t->deco)
+		hasdeco = 0;
+	}
+
+	tupletype = new TypeTuple(args);
+	if (hasdeco)
+	    return tupletype->semantic(0, NULL);
+    }
+
+    return tupletype;
+}
+
+int TupleDeclaration::needThis()
+{
+    //printf("TupleDeclaration::needThis(%s)\n", toChars());
+    for (size_t i = 0; i < objects->dim; i++)
+    {   Object *o = (Object *)objects->data[i];
+	if (o->dyncast() == DYNCAST_EXPRESSION)
+	{   Expression *e = (Expression *)o;
+	    if (e->op == TOKdsymbol)
+	    {	DsymbolExp *ve = (DsymbolExp *)e;
+		Declaration *d = ve->s->isDeclaration();
+		if (d && d->needThis())
+		{
+		    return 1;
+		}
+	    }
+	}
+    }
+    return 0;
+}
+
+/********************************* TypedefDeclaration ****************************/
+
+TypedefDeclaration::TypedefDeclaration(Loc loc, Identifier *id, Type *basetype, Initializer *init)
+    : Declaration(id)
+{
+    this->type = new TypeTypedef(this);
+    this->basetype = basetype->toBasetype();
+    this->init = init;
+#ifdef _DH
+    this->htype = NULL;
+    this->hbasetype = NULL;
+#endif
+    this->sem = 0;
+    this->loc = loc;
+#if IN_DMD
+    this->sinit = NULL;
+#endif
+}
+
+Dsymbol *TypedefDeclaration::syntaxCopy(Dsymbol *s)
+{
+    Type *basetype = this->basetype->syntaxCopy();
+
+    Initializer *init = NULL;
+    if (this->init)
+	init = this->init->syntaxCopy();
+
+    assert(!s);
+    TypedefDeclaration *st;
+    st = new TypedefDeclaration(loc, ident, basetype, init);
+#ifdef _DH
+    // Syntax copy for header file
+    if (!htype)      // Don't overwrite original
+    {	if (type)    // Make copy for both old and new instances
+	{   htype = type->syntaxCopy();
+	    st->htype = type->syntaxCopy();
+	}
+    }
+    else            // Make copy of original for new instance
+        st->htype = htype->syntaxCopy();
+    if (!hbasetype)
+    {	if (basetype)
+	{   hbasetype = basetype->syntaxCopy();
+	    st->hbasetype = basetype->syntaxCopy();
+	}
+    }
+    else
+        st->hbasetype = hbasetype->syntaxCopy();
+#endif
+    return st;
+}
+
+void TypedefDeclaration::semantic(Scope *sc)
+{
+    //printf("TypedefDeclaration::semantic(%s) sem = %d\n", toChars(), sem);
+    if (sem == 0)
+    {	sem = 1;
+	basetype = basetype->semantic(loc, sc);
+	sem = 2;
+	type = type->semantic(loc, sc);
+	if (sc->parent->isFuncDeclaration() && init)
+	    semantic2(sc);
+	storage_class |= sc->stc & STCdeprecated;
+    }
+    else if (sem == 1)
+    {
+	error("circular definition");
+    }
+}
+
+void TypedefDeclaration::semantic2(Scope *sc)
+{
+    //printf("TypedefDeclaration::semantic2(%s) sem = %d\n", toChars(), sem);
+    if (sem == 2)
+    {	sem = 3;
+	if (init)
+	{
+	    init = init->semantic(sc, basetype);
+
+	    ExpInitializer *ie = init->isExpInitializer();
+	    if (ie)
+	    {
+		if (ie->exp->type == basetype)
+		    ie->exp->type = type;
+	    }
+	}
+    }
+}
+
+const char *TypedefDeclaration::kind()
+{
+    return "typedef";
+}
+
+Type *TypedefDeclaration::getType()
+{
+    return type;
+}
+
+void TypedefDeclaration::toCBuffer(OutBuffer *buf, HdrGenState *hgs)
+{
+    buf->writestring("typedef ");
+    basetype->toCBuffer(buf, ident, hgs);
+    if (init)
+    {
+	buf->writestring(" = ");
+	init->toCBuffer(buf, hgs);
+    }
+    buf->writeByte(';');
+    buf->writenl();
+}
+
+/********************************* AliasDeclaration ****************************/
+
+AliasDeclaration::AliasDeclaration(Loc loc, Identifier *id, Type *type)
+    : Declaration(id)
+{
+    //printf("AliasDeclaration(id = '%s', type = %p)\n", id->toChars(), type);
+    //printf("type = '%s'\n", type->toChars());
+    this->loc = loc;
+    this->type = type;
+    this->aliassym = NULL;
+#ifdef _DH
+    this->htype = NULL;
+    this->haliassym = NULL;
+#endif
+    this->overnext = NULL;
+    this->inSemantic = 0;
+    this->importprot = PROTundefined;
+    assert(type);
+}
+
+AliasDeclaration::AliasDeclaration(Loc loc, Identifier *id, Dsymbol *s)
+    : Declaration(id)
+{
+    //printf("AliasDeclaration(id = '%s', s = %p)\n", id->toChars(), s);
+    assert(s != this);
+    this->loc = loc;
+    this->type = NULL;
+    this->aliassym = s;
+#ifdef _DH
+    this->htype = NULL;
+    this->haliassym = NULL;
+#endif
+    this->overnext = NULL;
+    this->inSemantic = 0;
+    assert(s);
+}
+
+Dsymbol *AliasDeclaration::syntaxCopy(Dsymbol *s)
+{
+    //printf("AliasDeclaration::syntaxCopy()\n");
+    assert(!s);
+    AliasDeclaration *sa;
+    if (type)
+	sa = new AliasDeclaration(loc, ident, type->syntaxCopy());
+    else
+	sa = new AliasDeclaration(loc, ident, aliassym->syntaxCopy(NULL));
+#ifdef _DH
+    // Syntax copy for header file
+    if (!htype)	    // Don't overwrite original
+    {	if (type)	// Make copy for both old and new instances
+	{   htype = type->syntaxCopy();
+	    sa->htype = type->syntaxCopy();
+	}
+    }
+    else			// Make copy of original for new instance
+	sa->htype = htype->syntaxCopy();
+    if (!haliassym)
+    {	if (aliassym)
+	{   haliassym = aliassym->syntaxCopy(s);
+	    sa->haliassym = aliassym->syntaxCopy(s);
+	}
+    }
+    else
+	sa->haliassym = haliassym->syntaxCopy(s);
+#endif
+    return sa;
+}
+
+void AliasDeclaration::semantic(Scope *sc)
+{
+    //printf("AliasDeclaration::semantic() %s\n", toChars());
+    if (aliassym)
+    {
+	if (aliassym->isTemplateInstance())
+	    aliassym->semantic(sc);
+	return;
+    }
+    this->inSemantic = 1;
+
+    if (storage_class & STCconst)
+	error("cannot be const");
+
+    storage_class |= sc->stc & STCdeprecated;
+
+    // Given:
+    //	alias foo.bar.abc def;
+    // it is not knowable from the syntax whether this is an alias
+    // for a type or an alias for a symbol. It is up to the semantic()
+    // pass to distinguish.
+    // If it is a type, then type is set and getType() will return that
+    // type. If it is a symbol, then aliassym is set and type is NULL -
+    // toAlias() will return aliasssym.
+
+    Dsymbol *s;
+    Type *t;
+    Expression *e;
+
+    /* This section is needed because resolve() will:
+     *   const x = 3;
+     *   alias x y;
+     * try to alias y to 3.
+     */
+    s = type->toDsymbol(sc);
+    if (s
+#if DMDV2
+`	&& ((s->getType() && type->equals(s->getType())) || s->isEnumMember())
+#endif
+	)
+	goto L2;			// it's a symbolic alias
+
+#if DMDV2
+    if (storage_class & (STCref | STCnothrow | STCpure))
+    {	// For 'ref' to be attached to function types, and picked
+	// up by Type::resolve(), it has to go into sc.
+	sc = sc->push();
+	sc->stc |= storage_class & (STCref | STCnothrow | STCpure);
+	type->resolve(loc, sc, &e, &t, &s);
+	sc = sc->pop();
+    }
+    else
+#endif
+	type->resolve(loc, sc, &e, &t, &s);
+    if (s)
+    {
+	goto L2;
+    }
+    else if (e)
+    {
+	// Try to convert Expression to Dsymbol
+        if (e->op == TOKvar)
+	{   s = ((VarExp *)e)->var;
+	    goto L2;
+	}
+        else if (e->op == TOKfunction)
+	{   s = ((FuncExp *)e)->fd;
+	    goto L2;
+	}
+        else
+	{   error("cannot alias an expression %s", e->toChars());
+	    t = e->type;
+	}
+    }
+    else if (t)
+    {
+	type = t;
+    }
+    if (overnext)
+	ScopeDsymbol::multiplyDefined(0, this, overnext);
+    this->inSemantic = 0;
+    return;
+
+  L2:
+    //printf("alias is a symbol %s %s\n", s->kind(), s->toChars());
+    type = NULL;
+    VarDeclaration *v = s->isVarDeclaration();
+    if (v && v->linkage == LINKdefault)
+    {
+	error("forward reference of %s", v->toChars());
+	s = NULL;
+    }
+    else
+    {
+	FuncDeclaration *f = s->toAlias()->isFuncDeclaration();
+	if (f)
+	{
+	    if (overnext)
+	    {
+		FuncAliasDeclaration *fa = new FuncAliasDeclaration(f);
+		fa->importprot = importprot;
+		if (!fa->overloadInsert(overnext))
+		    ScopeDsymbol::multiplyDefined(0, f, overnext);
+		overnext = NULL;
+		s = fa;
+		s->parent = sc->parent;
+	    }
+	}
+	if (overnext)
+	    ScopeDsymbol::multiplyDefined(0, s, overnext);
+	if (s == this)
+	{
+	    assert(global.errors);
+	    s = NULL;
+	}
+    }
+    if (!aliassym)
+	aliassym = s;
+    this->inSemantic = 0;
+}
+
+int AliasDeclaration::overloadInsert(Dsymbol *s)
+{
+    /* Don't know yet what the aliased symbol is, so assume it can
+     * be overloaded and check later for correctness.
+     */
+
+    //printf("AliasDeclaration::overloadInsert('%s')\n", s->toChars());
+    if (overnext == NULL)
+    {
+	if (s == this)
+	{
+	    return TRUE;
+	}
+	overnext = s;
+	return TRUE;
+    }
+    else
+    {
+	return overnext->overloadInsert(s);
+    }
+}
+
+const char *AliasDeclaration::kind()
+{
+    return "alias";
+}
+
+Type *AliasDeclaration::getType()
+{
+    //printf("AliasDeclaration::getType() %s\n", type->toChars());
+#if 0
+    if (!type->deco && scope)
+	semantic(scope);
+    if (type && !type->deco)
+	error("forward reference to alias %s\n", toChars());
+#endif
+    return type;
+}
+
+Dsymbol *AliasDeclaration::toAlias()
+{
+    //printf("AliasDeclaration::toAlias('%s', this = %p, aliassym = %p, kind = '%s')\n", toChars(), this, aliassym, aliassym ? aliassym->kind() : "");
+    assert(this != aliassym);
+    //static int count; if (++count == 75) exit(0); //*(char*)0=0;
+    if (inSemantic)
+    {	error("recursive alias declaration");
+	aliassym = new TypedefDeclaration(loc, ident, Type::terror, NULL);
+    }
+    Dsymbol *s = aliassym ? aliassym->toAlias() : this;
+    return s;
+}
+
+void AliasDeclaration::toCBuffer(OutBuffer *buf, HdrGenState *hgs)
+{
+    buf->writestring("alias ");
+#if 0 && _DH
+    if (hgs->hdrgen)
+    {
+	if (haliassym)
+	{
+	    buf->writestring(haliassym->toChars());
+	    buf->writeByte(' ');
+	    buf->writestring(ident->toChars());
+	}
+	else
+	    htype->toCBuffer(buf, ident, hgs);
+    }
+    else
+#endif
+    {
+	if (aliassym)
+	{
+	    buf->writestring(aliassym->toChars());
+	    buf->writeByte(' ');
+	    buf->writestring(ident->toChars());
+	}
+	else
+	    type->toCBuffer(buf, ident, hgs);
+    }
+    buf->writeByte(';');
+    buf->writenl();
+}
+
+/********************************* VarDeclaration ****************************/
+
+VarDeclaration::VarDeclaration(Loc loc, Type *type, Identifier *id, Initializer *init)
+    : Declaration(id)
+{
+    //printf("VarDeclaration('%s')\n", id->toChars());
+#ifdef DEBUG
+    if (!type && !init)
+    {	printf("VarDeclaration('%s')\n", id->toChars());
+	//*(char*)0=0;
+    }
+#endif
+    assert(type || init);
+    this->type = type;
+    this->init = init;
+#ifdef _DH
+    this->htype = NULL;
+    this->hinit = NULL;
+#endif
+    this->loc = loc;
+    offset = 0;
+    noscope = 0;
+#if DMDV1
+    nestedref = 0;
+#endif
+    ctorinit = 0;
+    aliassym = NULL;
+    onstack = 0;
+    canassign = 0;
+    value = NULL;
+
+#if IN_LLVM
+    aggrIndex = 0;
+
+    // LDC
+    anonDecl = NULL;
+    offset2 = 0;
+
+    nakedUse = false;
+
+    availableExternally = true; // assume this unless proven otherwise
+#endif
+}
+
+Dsymbol *VarDeclaration::syntaxCopy(Dsymbol *s)
+{
+    //printf("VarDeclaration::syntaxCopy(%s)\n", toChars());
+
+    VarDeclaration *sv;
+    if (s)
+    {	sv = (VarDeclaration *)s;
+    }
+    else
+    {
+	Initializer *init = NULL;
+	if (this->init)
+	{   init = this->init->syntaxCopy();
+	    //init->isExpInitializer()->exp->print();
+	    //init->isExpInitializer()->exp->dump(0);
+	}
+
+	sv = new VarDeclaration(loc, type ? type->syntaxCopy() : NULL, ident, init);
+	sv->storage_class = storage_class;
+    }
+#ifdef _DH
+    // Syntax copy for header file
+    if (!htype)      // Don't overwrite original
+    {	if (type)    // Make copy for both old and new instances
+	{   htype = type->syntaxCopy();
+	    sv->htype = type->syntaxCopy();
+	}
+    }
+    else            // Make copy of original for new instance
+        sv->htype = htype->syntaxCopy();
+    if (!hinit)
+    {	if (init)
+	{   hinit = init->syntaxCopy();
+	    sv->hinit = init->syntaxCopy();
+	}
+    }
+    else
+        sv->hinit = hinit->syntaxCopy();
+#endif
+    return sv;
+}
+
+void VarDeclaration::semantic(Scope *sc)
+{
+#if 0
+    printf("VarDeclaration::semantic('%s', parent = '%s')\n", toChars(), sc->parent->toChars());
+    printf(" type = %s\n", type ? type->toChars() : "null");
+    printf(" stc = x%x\n", sc->stc);
+    printf(" storage_class = x%x\n", storage_class);
+    printf("linkage = %d\n", sc->linkage);
+    //if (strcmp(toChars(), "mul") == 0) halt();
+#endif
+
+    storage_class |= sc->stc;
+    if (storage_class & STCextern && init)
+	error("extern symbols cannot have initializers");
+
+    /* If auto type inference, do the inference
+     */
+    int inferred = 0;
+    if (!type)
+    {	inuse++;
+	type = init->inferType(sc);
+	inuse--;
+	inferred = 1;
+
+	/* This is a kludge to support the existing syntax for RAII
+	 * declarations.
+	 */
+	storage_class &= ~STCauto;
+	originalType = type;
+    }
+    else
+    {	if (!originalType)
+	    originalType = type;
+	type = type->semantic(loc, sc);
+    }
+    //printf(" semantic type = %s\n", type ? type->toChars() : "null");
+
+    type->checkDeprecated(loc, sc);
+    linkage = sc->linkage;
+    this->parent = sc->parent;
+    //printf("this = %p, parent = %p, '%s'\n", this, parent, parent->toChars());
+    protection = sc->protection;
+    //printf("sc->stc = %x\n", sc->stc);
+    //printf("storage_class = x%x\n", storage_class);
+
+#if DMDV2
+    if (storage_class & STCgshared && global.params.safe && !sc->module->safe)
+    {
+	error("__gshared not allowed in safe mode; use shared");
+    }
+#endif
+
+    Dsymbol *parent = toParent();
+    FuncDeclaration *fd = parent->isFuncDeclaration();
+
+    Type *tb = type->toBasetype();
+    if (tb->ty == Tvoid && !(storage_class & STClazy))
+    {	error("voids have no value");
+	type = Type::terror;
+	tb = type;
+    }
+    if (tb->ty == Tfunction)
+    {	error("cannot be declared to be a function");
+	type = Type::terror;
+	tb = type;
+    }
+    if (tb->ty == Tstruct)
+    {	TypeStruct *ts = (TypeStruct *)tb;
+
+	if (!ts->sym->members)
+	{
+	    error("no definition of struct %s", ts->toChars());
+	}
+    }
+    if ((storage_class & STCauto) && !inferred)
+	error("both auto and explicit type given");
+
+    if (tb->ty == Ttuple)
+    {   /* Instead, declare variables for each of the tuple elements
+	 * and add those.
+	 */
+	TypeTuple *tt = (TypeTuple *)tb;
+	size_t nelems = Argument::dim(tt->arguments);
+	Objects *exps = new Objects();
+	exps->setDim(nelems);
+	Expression *ie = init ? init->toExpression() : NULL;
+
+	for (size_t i = 0; i < nelems; i++)
+	{   Argument *arg = Argument::getNth(tt->arguments, i);
+
+	    OutBuffer buf;
+	    buf.printf("_%s_field_%zu", ident->toChars(), i);
+	    buf.writeByte(0);
+	    char *name = (char *)buf.extractData();
+	    Identifier *id = new Identifier(name, TOKidentifier);
+
+	    Expression *einit = ie;
+	    if (ie && ie->op == TOKtuple)
+	    {	einit = (Expression *)((TupleExp *)ie)->exps->data[i];
+	    }
+	    Initializer *ti = init;
+	    if (einit)
+	    {	ti = new ExpInitializer(einit->loc, einit);
+	    }
+
+	    VarDeclaration *v = new VarDeclaration(loc, arg->type, id, ti);
+	    //printf("declaring field %s of type %s\n", v->toChars(), v->type->toChars());
+	    v->semantic(sc);
+            
+/*
+// removed for LDC since TupleDeclaration::toObj already creates the fields;
+// adding them to the scope again leads to duplicates
+	    if (sc->scopesym)
+	    {	//printf("adding %s to %s\n", v->toChars(), sc->scopesym->toChars());
+		if (sc->scopesym->members)
+		    sc->scopesym->members->push(v);
+	    }
+*/
+	    Expression *e = new DsymbolExp(loc, v);
+	    exps->data[i] = e;
+	}
+	TupleDeclaration *v2 = new TupleDeclaration(loc, ident, exps);
+	v2->isexp = 1;
+	aliassym = v2;
+	return;
+    }
+
+    if (storage_class & STCconst && !init && !fd)
+	// Initialize by constructor only
+	storage_class = (storage_class & ~STCconst) | STCctorinit;
+
+    if (isConst())
+    {
+    }
+    else if (isStatic())
+    {
+    }
+    else if (isSynchronized())
+    {
+	error("variable %s cannot be synchronized", toChars());
+    }
+    else if (isOverride())
+    {
+	error("override cannot be applied to variable");
+    }
+    else if (isAbstract())
+    {
+	error("abstract cannot be applied to variable");
+    }
+    else if (storage_class & STCtemplateparameter)
+    {
+    }
+    else
+    {
+	AggregateDeclaration *aad = sc->anonAgg;
+	if (!aad)
+	    aad = parent->isAggregateDeclaration();
+	if (aad)
+	{
+#if DMDV2
+	    assert(!(storage_class & (STCextern | STCstatic | STCtls | STCgshared)));
+
+	    if (storage_class & (STCconst | STCimmutable) && init)
+	    {
+		if (!type->toBasetype()->isTypeBasic())
+		    storage_class |= STCstatic;
+	    }
+	    else
+#endif
+		aad->addField(sc, this);
+	}
+
+	InterfaceDeclaration *id = parent->isInterfaceDeclaration();
+	if (id)
+	{
+	    error("field not allowed in interface");
+	}
+
+	/* Templates cannot add fields to aggregates
+	 */
+	TemplateInstance *ti = parent->isTemplateInstance();
+	if (ti)
+	{
+	    // Take care of nested templates
+	    while (1)
+	    {
+		TemplateInstance *ti2 = ti->tempdecl->parent->isTemplateInstance();
+		if (!ti2)
+		    break;
+		ti = ti2;
+	    }
+
+	    // If it's a member template
+	    AggregateDeclaration *ad = ti->tempdecl->isMember();
+	    if (ad && storage_class != STCundefined)
+	    {
+		error("cannot use template to add field to aggregate '%s'", ad->toChars());
+	    }
+	}
+    }
+
+#if DMDV2
+    if ((storage_class & (STCref | STCparameter | STCforeach)) == STCref &&
+	ident != Id::This)
+    {
+	error("only parameters or foreach declarations can be ref");
+    }
+#endif
+
+    if (type->isscope() && !noscope)
+    {
+	if (storage_class & (STCfield | STCout | STCref | STCstatic) || !fd)
+	{
+	    error("globals, statics, fields, ref and out parameters cannot be scope");
+	}
+
+	if (!(storage_class & STCscope))
+	{
+	    if (!(storage_class & STCparameter) && ident != Id::withSym)
+		error("reference to scope class must be scope");
+	}
+    }
+
+    enum TOK op = TOKconstruct;
+    if (!init && !sc->inunion && !isStatic() && !isConst() && fd &&
+	!(storage_class & (STCfield | STCin | STCforeach)) &&
+	type->size() != 0)
+    {
+	// Provide a default initializer
+	//printf("Providing default initializer for '%s'\n", toChars());
+	if (type->ty == Tstruct &&
+	    ((TypeStruct *)type)->sym->zeroInit == 1)
+	{   /* If a struct is all zeros, as a special case
+	     * set it's initializer to the integer 0.
+	     * In AssignExp::toElem(), we check for this and issue
+	     * a memset() to initialize the struct.
+	     * Must do same check in interpreter.
+	     */
+	    Expression *e = new IntegerExp(loc, 0, Type::tint32);
+	    Expression *e1;
+	    e1 = new VarExp(loc, this);
+	    e = new AssignExp(loc, e1, e);
+	    e->op = TOKconstruct;
+	    e->type = e1->type;		// don't type check this, it would fail
+	    init = new ExpInitializer(loc, e);
+	    return;
+	}
+	else if (type->ty == Ttypedef)
+	{   TypeTypedef *td = (TypeTypedef *)type;
+	    if (td->sym->init)
+	    {	init = td->sym->init;
+		ExpInitializer *ie = init->isExpInitializer();
+		if (ie)
+		    // Make copy so we can modify it
+		    init = new ExpInitializer(ie->loc, ie->exp);
+	    }
+	    else
+		init = getExpInitializer();
+	}
+	else
+	{
+	    init = getExpInitializer();
+	}
+	// Default initializer is always a blit
+	op = TOKblit;
+    }
+
+    if (init)
+    {
+	sc = sc->push();
+	sc->stc &= ~(STC_TYPECTOR | STCpure | STCnothrow | STCref);
+
+	ArrayInitializer *ai = init->isArrayInitializer();
+	if (ai && tb->ty == Taarray)
+	{
+	    init = ai->toAssocArrayInitializer();
+	}
+
+	StructInitializer *si = init->isStructInitializer();
+	ExpInitializer *ei = init->isExpInitializer();
+
+	// See if initializer is a NewExp that can be allocated on the stack
+	if (ei && isScope() && ei->exp->op == TOKnew)
+	{   NewExp *ne = (NewExp *)ei->exp;
+	    if (!(ne->newargs && ne->newargs->dim))
+	    {	ne->onstack = 1;
+		onstack = 1;
+		if (type->isBaseOf(ne->newtype->semantic(loc, sc), NULL))
+		    onstack = 2;
+	    }
+	}
+
+	// If inside function, there is no semantic3() call
+	if (sc->func)
+	{
+	    // If local variable, use AssignExp to handle all the various
+	    // possibilities.
+	    if (fd && !isStatic() && !isConst() && !init->isVoidInitializer())
+	    {
+		//printf("fd = '%s', var = '%s'\n", fd->toChars(), toChars());
+		if (!ei)
+		{
+		    Expression *e = init->toExpression();
+		    if (!e)
+		    {
+			init = init->semantic(sc, type);
+			e = init->toExpression();
+			if (!e)
+			{   error("is not a static and cannot have static initializer");
+			    return;
+			}
+		    }
+		    ei = new ExpInitializer(init->loc, e);
+		    init = ei;
+		}
+
+		Expression *e1 = new VarExp(loc, this);
+
+		Type *t = type->toBasetype();
+		if (t->ty == Tsarray && !(storage_class & (STCref | STCout)))
+		{
+		    ei->exp = ei->exp->semantic(sc);
+		    if (!ei->exp->implicitConvTo(type))
+		    {
+			int dim = ((TypeSArray *)t)->dim->toInteger();
+			// If multidimensional static array, treat as one large array
+			while (1)
+			{
+			    t = t->nextOf()->toBasetype();
+			    if (t->ty != Tsarray)
+				break;
+			    dim *= ((TypeSArray *)t)->dim->toInteger();
+			    e1->type = new TypeSArray(t->nextOf(), new IntegerExp(0, dim, Type::tindex));
+			}
+		    }
+		    e1 = new SliceExp(loc, e1, NULL, NULL);
+		}
+		else if (t->ty == Tstruct)
+		{
+		    ei->exp = ei->exp->semantic(sc);
+		    ei->exp = resolveProperties(sc, ei->exp);
+		    StructDeclaration *sd = ((TypeStruct *)t)->sym;
+#if DMDV2
+		    /* Look to see if initializer is a call to the constructor
+		     */
+		    if (sd->ctor &&		// there are constructors
+			ei->exp->type->ty == Tstruct &&	// rvalue is the same struct
+			((TypeStruct *)ei->exp->type)->sym == sd &&
+			ei->exp->op == TOKstar)
+		    {
+			/* Look for form of constructor call which is:
+			 *    *__ctmp.ctor(arguments...)
+			 */
+			PtrExp *pe = (PtrExp *)ei->exp;
+			if (pe->e1->op == TOKcall)
+			{   CallExp *ce = (CallExp *)pe->e1;
+			    if (ce->e1->op == TOKdotvar)
+			    {	DotVarExp *dve = (DotVarExp *)ce->e1;
+				if (dve->var->isCtorDeclaration())
+				{   /* It's a constructor call, currently constructing
+				     * a temporary __ctmp.
+				     */
+				    /* Before calling the constructor, initialize
+				     * variable with a bit copy of the default
+				     * initializer
+				     */
+				    Expression *e = new AssignExp(loc, new VarExp(loc, this), t->defaultInit(loc));
+				    e->op = TOKblit;
+				    e->type = t;
+				    ei->exp = new CommaExp(loc, e, ei->exp);
+
+				    /* Replace __ctmp being constructed with e1
+				     */
+				    dve->e1 = e1;
+				    return;
+				}
+			    }
+			}
+		    }
+#endif
+		    if (!ei->exp->implicitConvTo(type))
+		    {
+			/* Look for opCall
+			 * See bugzilla 2702 for more discussion
+			 */
+			Type *ti = ei->exp->type->toBasetype();
+			// Don't cast away invariant or mutability in initializer
+			if (search_function(sd, Id::call) &&
+			    /* Initializing with the same type is done differently
+			     */
+			    !(ti->ty == Tstruct && t->toDsymbol(sc) == ti->toDsymbol(sc)))
+			{   // Rewrite as e1.call(arguments)
+			    Expression * eCall = new DotIdExp(loc, e1, Id::call);
+			    ei->exp = new CallExp(loc, eCall, ei->exp);
+			}
+		    }
+		}
+		ei->exp = new AssignExp(loc, e1, ei->exp);
+		ei->exp->op = TOKconstruct;
+		canassign++;
+		ei->exp = ei->exp->semantic(sc);
+		canassign--;
+		ei->exp->optimize(WANTvalue);
+	    }
+	    else
+	    {
+		init = init->semantic(sc, type);
+		if (fd && isConst() && !isStatic())
+		{   // Make it static
+		    storage_class |= STCstatic;
+		}
+	    }
+	}
+	else if (isConst() || isFinal() ||
+		 parent->isAggregateDeclaration())
+	{
+	    /* Because we may need the results of a const declaration in a
+	     * subsequent type, such as an array dimension, before semantic2()
+	     * gets ordinarily run, try to run semantic2() now.
+	     * Ignore failure.
+	     */
+
+	    if (!global.errors && !inferred)
+	    {
+		unsigned errors = global.errors;
+		global.gag++;
+		//printf("+gag\n");
+		Expression *e;
+		Initializer *i2 = init;
+		inuse++;
+		if (ei)
+		{
+		    e = ei->exp->syntaxCopy();
+		    e = e->semantic(sc);
+		    e = e->implicitCastTo(sc, type);
+		}
+		else if (si || ai)
+		{   i2 = init->syntaxCopy();
+		    i2 = i2->semantic(sc, type);
+		}
+		inuse--;
+		global.gag--;
+		//printf("-gag\n");
+		if (errors != global.errors)	// if errors happened
+		{
+		    if (global.gag == 0)
+			global.errors = errors;	// act as if nothing happened
+#if DMDV2
+		    /* Save scope for later use, to try again
+		     */
+		    scope = new Scope(*sc);
+		    scope->setNoFree();
+#endif
+		}
+		else if (ei)
+		{
+		    e = e->optimize(WANTvalue | WANTinterpret);
+		    if (e->op == TOKint64 || e->op == TOKstring || e->op == TOKfloat64)
+		    {
+			ei->exp = e;		// no errors, keep result
+		    }
+#if DMDV2
+		    else
+		    {
+			/* Save scope for later use, to try again
+			 */
+			scope = new Scope(*sc);
+			scope->setNoFree();
+		    }
+#endif
+		}
+		else
+		    init = i2;		// no errors, keep result
+	    }
+	}
+	sc = sc->pop();
+    }
+}
+
+ExpInitializer *VarDeclaration::getExpInitializer()
+{
+    ExpInitializer *ei;
+
+    if (init)
+	ei = init->isExpInitializer();
+    else
+    {
+	Expression *e = type->defaultInit(loc);
+	if (e)
+	    ei = new ExpInitializer(loc, e);
+	else
+	    ei = NULL;
+    }
+    return ei;
+}
+
+void VarDeclaration::semantic2(Scope *sc)
+{
+    //printf("VarDeclaration::semantic2('%s')\n", toChars());
+    if (init && !toParent()->isFuncDeclaration())
+    {	inuse++;
+#if 0
+	ExpInitializer *ei = init->isExpInitializer();
+	if (ei)
+	{
+	    ei->exp->dump(0);
+	    printf("type = %p\n", ei->exp->type);
+	}
+#endif
+	init = init->semantic(sc, type);
+	inuse--;
+    }
+}
+
+void VarDeclaration::semantic3(Scope *sc)
+{
+    // LDC
+    if (!global.params.useAvailableExternally)
+        availableExternally = false;
+
+    // Preserve call chain
+    Declaration::semantic3(sc);
+}
+
+const char *VarDeclaration::kind()
+{
+    return "variable";
+}
+
+Dsymbol *VarDeclaration::toAlias()
+{
+    //printf("VarDeclaration::toAlias('%s', this = %p, aliassym = %p)\n", toChars(), this, aliassym);
+    assert(this != aliassym);
+    Dsymbol *s = aliassym ? aliassym->toAlias() : this;
+    return s;
+}
+
+void VarDeclaration::toCBuffer(OutBuffer *buf, HdrGenState *hgs)
+{
+    StorageClassDeclaration::stcToCBuffer(buf, storage_class);
+
+    /* If changing, be sure and fix CompoundDeclarationStatement::toCBuffer()
+     * too.
+     */
+    if (type)
+	type->toCBuffer(buf, ident, hgs);
+    else
+	buf->writestring(ident->toChars());
+    if (init)
+    {	buf->writestring(" = ");
+#if DMDV2
+	ExpInitializer *ie = init->isExpInitializer();
+	if (ie && (ie->exp->op == TOKconstruct || ie->exp->op == TOKblit))
+	    ((AssignExp *)ie->exp)->e2->toCBuffer(buf, hgs);
+	else
+#endif
+	    init->toCBuffer(buf, hgs);
+    }
+    buf->writeByte(';');
+    buf->writenl();
+}
+
+int VarDeclaration::needThis()
+{
+    //printf("VarDeclaration::needThis(%s, x%x)\n", toChars(), storage_class);
+    return storage_class & STCfield;
+}
+
+int VarDeclaration::isImportedSymbol()
+{
+    if (protection == PROTexport && !init && (isStatic() || isConst() || parent->isModule()))
+	return TRUE;
+    return FALSE;
+}
+
+void VarDeclaration::checkCtorConstInit()
+{
+    if (ctorinit == 0 && isCtorinit() && !(storage_class & STCfield))
+	error("missing initializer in static constructor for const variable");
+}
+
+/************************************
+ * Check to see if this variable is actually in an enclosing function
+ * rather than the current one.
+ */
+
+void VarDeclaration::checkNestedReference(Scope *sc, Loc loc)
+{
+    //printf("VarDeclaration::checkNestedReference() %s\n", toChars());
+    if (parent && !isDataseg() && parent != sc->parent)
+    {
+	// The function that this variable is in
+	FuncDeclaration *fdv = toParent()->isFuncDeclaration();
+	// The current function
+	FuncDeclaration *fdthis = sc->parent->isFuncDeclaration();
+
+	if (fdv && fdthis)
+	{
+	    if (loc.filename)
+		fdthis->getLevel(loc, fdv);
+	    nestedref = 1;
+	    fdv->nestedFrameRef = 1;
+#if IN_LLVM
+#if DMDV1
+        fdv->nestedVars.insert(this);
+#endif
+#endif
+	    //printf("var %s in function %s is nested ref\n", toChars(), fdv->toChars());
+	}
+    }
+}
+
+/*******************************
+ * Does symbol go into data segment?
+ * Includes extern variables.
+ */
+
+int VarDeclaration::isDataseg()
+{
+#if 0
+    printf("VarDeclaration::isDataseg(%p, '%s')\n", this, toChars());
+    printf("%x, %p, %p\n", storage_class & (STCstatic | STCconst), parent->isModule(), parent->isTemplateInstance());
+    printf("parent = '%s'\n", parent->toChars());
+#endif
+    Dsymbol *parent = this->toParent();
+    if (!parent && !(storage_class & (STCstatic | STCconst)))
+    {	error("forward referenced");
+	type = Type::terror;
+	return 0;
+    }
+    return (storage_class & (STCstatic | STCconst) ||
+	   parent->isModule() ||
+	   parent->isTemplateInstance());
+}
+
+/************************************
+ * Does symbol go into thread local storage?
+ */
+
+int VarDeclaration::isThreadlocal()
+{
+    return 0;
+}
+
+int VarDeclaration::hasPointers()
+{
+    //printf("VarDeclaration::hasPointers() %s, ty = %d\n", toChars(), type->ty);
+    return (!isDataseg() && type->hasPointers());
+}
+
+int VarDeclaration::isSameAsInitializer()
+{
+    if (init && init->isExpInitializer() && 
+        init->isExpInitializer()->exp->op == TOKstructliteral)
+        return 0;
+    return isConst();
+}
+
+/******************************************
+ * If a variable has an scope destructor call, return call for it.
+ * Otherwise, return NULL.
+ */
+
+Expression *VarDeclaration::callScopeDtor(Scope *sc)
+{   Expression *e = NULL;
+
+    //printf("VarDeclaration::callScopeDtor() %s\n", toChars());
+    if (storage_class & STCscope && !noscope)
+    {
+	for (ClassDeclaration *cd = type->isClassHandle();
+	     cd;
+	     cd = cd->baseClass)
+	{
+	    /* We can do better if there's a way with onstack
+	     * classes to determine if there's no way the monitor
+	     * could be set.
+	     */
+	    //if (cd->isInterfaceDeclaration())
+		//error("interface %s cannot be scope", cd->toChars());
+	    if (1 || onstack || cd->dtors.dim)	// if any destructors
+	    {
+		// delete this;
+		Expression *ec;
+
+		ec = new VarExp(loc, this);
+		e = new DeleteExp(loc, ec);
+		e->type = Type::tvoid;
+		break;
+	    }
+	}
+    }
+    return e;
+}
+
+
+/********************************* ClassInfoDeclaration ****************************/
+
+ClassInfoDeclaration::ClassInfoDeclaration(ClassDeclaration *cd)
+    : VarDeclaration(0, ClassDeclaration::classinfo->type, cd->ident, NULL)
+{
+    this->cd = cd;
+    storage_class = STCstatic;
+}
+
+Dsymbol *ClassInfoDeclaration::syntaxCopy(Dsymbol *s)
+{
+    assert(0);		// should never be produced by syntax
+    return NULL;
+}
+
+void ClassInfoDeclaration::semantic(Scope *sc)
+{
+}
+
+/********************************* ModuleInfoDeclaration ****************************/
+
+ModuleInfoDeclaration::ModuleInfoDeclaration(Module *mod)
+    : VarDeclaration(0, Module::moduleinfo->type, mod->ident, NULL)
+{
+    this->mod = mod;
+    storage_class = STCstatic;
+}
+
+Dsymbol *ModuleInfoDeclaration::syntaxCopy(Dsymbol *s)
+{
+    assert(0);		// should never be produced by syntax
+    return NULL;
+}
+
+void ModuleInfoDeclaration::semantic(Scope *sc)
+{
+}
+
+/********************************* TypeInfoDeclaration ****************************/
+
+TypeInfoDeclaration::TypeInfoDeclaration(Type *tinfo, int internal)
+    : VarDeclaration(0, Type::typeinfo->type, tinfo->getTypeInfoIdent(internal), NULL)
+{
+    this->tinfo = tinfo;
+    storage_class = STCstatic;
+    protection = PROTpublic;
+    linkage = LINKc;
+}
+
+Dsymbol *TypeInfoDeclaration::syntaxCopy(Dsymbol *s)
+{
+    assert(0);		// should never be produced by syntax
+    return NULL;
+}
+
+void TypeInfoDeclaration::semantic(Scope *sc)
+{
+    assert(linkage == LINKc);
+    // LDC
+    if (!global.params.useAvailableExternally)
+        availableExternally = false;
+}
+
+/***************************** TypeInfoConstDeclaration **********************/
+
+#if DMDV2
+TypeInfoConstDeclaration::TypeInfoConstDeclaration(Type *tinfo)
+    : TypeInfoDeclaration(tinfo, 0)
+{
+}
+#endif
+
+/***************************** TypeInfoInvariantDeclaration **********************/
+
+#if DMDV2
+TypeInfoInvariantDeclaration::TypeInfoInvariantDeclaration(Type *tinfo)
+    : TypeInfoDeclaration(tinfo, 0)
+{
+}
+#endif
+
+/***************************** TypeInfoSharedDeclaration **********************/
+
+#if DMDV2
+TypeInfoSharedDeclaration::TypeInfoSharedDeclaration(Type *tinfo)
+    : TypeInfoDeclaration(tinfo, 0)
+{
+}
+#endif
+
+/***************************** TypeInfoStructDeclaration **********************/
+
+TypeInfoStructDeclaration::TypeInfoStructDeclaration(Type *tinfo)
+    : TypeInfoDeclaration(tinfo, 0)
+{
+}
+
+/***************************** TypeInfoClassDeclaration ***********************/
+
+TypeInfoClassDeclaration::TypeInfoClassDeclaration(Type *tinfo)
+    : TypeInfoDeclaration(tinfo, 0)
+{
+}
+
+/***************************** TypeInfoInterfaceDeclaration *******************/
+
+TypeInfoInterfaceDeclaration::TypeInfoInterfaceDeclaration(Type *tinfo)
+    : TypeInfoDeclaration(tinfo, 0)
+{
+}
+
+/***************************** TypeInfoTypedefDeclaration *********************/
+
+TypeInfoTypedefDeclaration::TypeInfoTypedefDeclaration(Type *tinfo)
+    : TypeInfoDeclaration(tinfo, 0)
+{
+}
+
+/***************************** TypeInfoPointerDeclaration *********************/
+
+TypeInfoPointerDeclaration::TypeInfoPointerDeclaration(Type *tinfo)
+    : TypeInfoDeclaration(tinfo, 0)
+{
+}
+
+/***************************** TypeInfoArrayDeclaration ***********************/
+
+TypeInfoArrayDeclaration::TypeInfoArrayDeclaration(Type *tinfo)
+    : TypeInfoDeclaration(tinfo, 0)
+{
+}
+
+/***************************** TypeInfoStaticArrayDeclaration *****************/
+
+TypeInfoStaticArrayDeclaration::TypeInfoStaticArrayDeclaration(Type *tinfo)
+    : TypeInfoDeclaration(tinfo, 0)
+{
+}
+
+/***************************** TypeInfoAssociativeArrayDeclaration ************/
+
+TypeInfoAssociativeArrayDeclaration::TypeInfoAssociativeArrayDeclaration(Type *tinfo)
+    : TypeInfoDeclaration(tinfo, 0)
+{
+}
+
+/***************************** TypeInfoEnumDeclaration ***********************/
+
+TypeInfoEnumDeclaration::TypeInfoEnumDeclaration(Type *tinfo)
+    : TypeInfoDeclaration(tinfo, 0)
+{
+}
+
+/***************************** TypeInfoFunctionDeclaration ********************/
+
+TypeInfoFunctionDeclaration::TypeInfoFunctionDeclaration(Type *tinfo)
+    : TypeInfoDeclaration(tinfo, 0)
+{
+}
+
+/***************************** TypeInfoDelegateDeclaration ********************/
+
+TypeInfoDelegateDeclaration::TypeInfoDelegateDeclaration(Type *tinfo)
+    : TypeInfoDeclaration(tinfo, 0)
+{
+}
+
+/***************************** TypeInfoTupleDeclaration **********************/
+
+TypeInfoTupleDeclaration::TypeInfoTupleDeclaration(Type *tinfo)
+    : TypeInfoDeclaration(tinfo, 0)
+{
+}
+
+/********************************* ThisDeclaration ****************************/
+
+// For the "this" parameter to member functions
+
+ThisDeclaration::ThisDeclaration(Loc loc, Type *t)
+   : VarDeclaration(loc, t, Id::This, NULL)
+{
+    noscope = 1;
+}
+
+Dsymbol *ThisDeclaration::syntaxCopy(Dsymbol *s)
+{
+    assert(0);		// should never be produced by syntax
+    return NULL;
+}
+
+/********************** StaticStructInitDeclaration ***************************/
+
+StaticStructInitDeclaration::StaticStructInitDeclaration(Loc loc, StructDeclaration *dsym)
+    : Declaration(new Identifier("", TOKidentifier))
+{
+    this->loc = loc;
+    this->dsym = dsym;
+    storage_class |= STCconst;
+}