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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 c53b6e3fe49a
children
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2 // Compiler implementation of the D programming language
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3 // Copyright (c) 1999-2006 by Digital Mars
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4 // All Rights Reserved
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5 // written by Walter Bright
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6 // http://www.digitalmars.com
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7 // License for redistribution is by either the Artistic License
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8 // in artistic.txt, or the GNU General Public License in gnu.txt.
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9 // See the included readme.txt for details.
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10
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11 #ifndef DMD_MACRO_H
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12 #define DMD_MACRO_H 1
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14 #include <stdio.h>
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15 #include <string.h>
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16 #include <time.h>
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17 #include <ctype.h>
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19 #include "root.h"
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21
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22 class Macro
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23 {
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24 Macro *next; // next in list
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26 unsigned char *name; // macro name
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27 size_t namelen; // length of macro name
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29 unsigned char *text; // macro replacement text
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30 size_t textlen; // length of replacement text
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32 int inuse; // macro is in use (don't expand)
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33
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34 Macro(unsigned char *name, size_t namelen, unsigned char *text, size_t textlen);
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35 Macro *search(unsigned char *name, size_t namelen);
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36
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37 public:
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38 static Macro *define(Macro **ptable, unsigned char *name, size_t namelen, unsigned char *text, size_t textlen);
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40 void expand(OutBuffer *buf, unsigned start, unsigned *pend,
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41 unsigned char *arg, unsigned arglen);
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42 };
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43
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44 #endif