Mercurial > projects > ldc
view dmd/version.c @ 1404:11b122f92136
Now that templates instantiations are no longer emitted for all modules that
even blink at them they seem to break due to being linkonce (if compiled with
any optimization level > 0), so let's give them weak linkage instead.
The difference is that unreferenced linkonce symbols can be deleted, while
weak symbols need to be preserved.
author | Frits van Bommel <fvbommel wxs.nl> |
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date | Thu, 21 May 2009 15:23:28 +0200 |
parents | aaade6ded589 |
children |
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// Copyright (c) 1999-2005 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 "root.h" #include "identifier.h" #include "dsymbol.h" #include "cond.h" #include "version.h" #include "module.h" /* ================================================== */ /* DebugSymbol's happen for statements like: * debug = identifier; * debug = integer; */ DebugSymbol::DebugSymbol(Loc loc, Identifier *ident) : Dsymbol(ident) { this->loc = loc; } DebugSymbol::DebugSymbol(Loc loc, unsigned level) : Dsymbol() { this->level = level; this->loc = loc; } Dsymbol *DebugSymbol::syntaxCopy(Dsymbol *s) { assert(!s); DebugSymbol *ds = new DebugSymbol(loc, ident); ds->level = level; return ds; } int DebugSymbol::addMember(Scope *sc, ScopeDsymbol *sd, int memnum) { //printf("DebugSymbol::addMember('%s') %s\n", sd->toChars(), toChars()); Module *m; // Do not add the member to the symbol table, // just make sure subsequent debug declarations work. m = sd->isModule(); if (ident) { if (!m) error("declaration must be at module level"); else { if (findCondition(m->debugidsNot, ident)) error("defined after use"); if (!m->debugids) m->debugids = new Array(); m->debugids->push(ident->toChars()); } } else { if (!m) error("level declaration must be at module level"); else m->debuglevel = level; } return 0; } void DebugSymbol::semantic(Scope *sc) { //printf("DebugSymbol::semantic() %s\n", toChars()); } void DebugSymbol::toCBuffer(OutBuffer *buf, HdrGenState *hgs) { buf->writestring("debug = "); if (ident) buf->writestring(ident->toChars()); else buf->printf("%u", level); buf->writestring(";"); buf->writenl(); } const char *DebugSymbol::kind() { return "debug"; } /* ================================================== */ /* VersionSymbol's happen for statements like: * version = identifier; * version = integer; */ VersionSymbol::VersionSymbol(Loc loc, Identifier *ident) : Dsymbol(ident) { this->loc = loc; } VersionSymbol::VersionSymbol(Loc loc, unsigned level) : Dsymbol() { this->level = level; this->loc = loc; } Dsymbol *VersionSymbol::syntaxCopy(Dsymbol *s) { assert(!s); VersionSymbol *ds = new VersionSymbol(loc, ident); ds->level = level; return ds; } int VersionSymbol::addMember(Scope *sc, ScopeDsymbol *sd, int memnum) { //printf("VersionSymbol::addMember('%s') %s\n", sd->toChars(), toChars()); Module *m; // Do not add the member to the symbol table, // just make sure subsequent debug declarations work. m = sd->isModule(); if (ident) { VersionCondition::checkPredefined(loc, ident->toChars()); if (!m) error("declaration must be at module level"); else { if (findCondition(m->versionidsNot, ident)) error("defined after use"); if (!m->versionids) m->versionids = new Array(); m->versionids->push(ident->toChars()); } } else { if (!m) error("level declaration must be at module level"); else m->versionlevel = level; } return 0; } void VersionSymbol::semantic(Scope *sc) { } void VersionSymbol::toCBuffer(OutBuffer *buf, HdrGenState *hgs) { buf->writestring("version = "); if (ident) buf->writestring(ident->toChars()); else buf->printf("%u", level); buf->writestring(";"); buf->writenl(); } const char *VersionSymbol::kind() { return "version"; }