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view dmd2/macro.h @ 1499:df11cdec45a2
Another shot at fixing the issues with (constant) struct literals and their addresses. See DMD2682, #218, #324.
The idea is to separate the notion of const from 'this variable can always be
replaced with its initializer' in the frontend. To do that, I introduced
Declaration::isSameAsInitializer, which is overridden in VarDeclaration to
return false for constants that have a struct literal initializer.
So
{{{
const S s = S(5);
void foo() { auto ps = &s; }
// is no longer replaced by
void foo() { auto ps = &(S(5)); }
}}}
To make taking the address of a struct constant with a struct-initializer
outside of function scope possible, I made sure that AddrExp::optimize doesn't
try to run the argument's optimization with WANTinterpret - that'd again
replace the constant with a struct literal temporary.
author | Christian Kamm <kamm incasoftware de> |
---|---|
date | Sun, 14 Jun 2009 19:49:58 +0200 |
parents | f04dde6e882c |
children |
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// Compiler implementation of the D programming language // Copyright (c) 1999-2006 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. #ifndef DMD_MACRO_H #define DMD_MACRO_H 1 #include <stdio.h> #include <string.h> #include <time.h> #include <ctype.h> #include "root.h" class Macro { Macro *next; // next in list unsigned char *name; // macro name size_t namelen; // length of macro name unsigned char *text; // macro replacement text size_t textlen; // length of replacement text int inuse; // macro is in use (don't expand) Macro(unsigned char *name, size_t namelen, unsigned char *text, size_t textlen); Macro *search(unsigned char *name, size_t namelen); public: static Macro *define(Macro **ptable, unsigned char *name, size_t namelen, unsigned char *text, size_t textlen); void expand(OutBuffer *buf, unsigned start, unsigned *pend, unsigned char *arg, unsigned arglen); }; #endif