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Better pragma once guard

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This takes care of case-insensitive filenames (like on win32)
This commit is contained in:
Vlad Vissoultchev 2016-04-11 01:26:32 +03:00
parent 98ffeaa0c5
commit b3782c3cf5
2 changed files with 9 additions and 5 deletions
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2
tcc.c
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@ -99,7 +99,7 @@ static void help(void)
" -Usym undefine 'sym'\n" " -Usym undefine 'sym'\n"
" -E preprocess only\n" " -E preprocess only\n"
" -P[1] no/alternative output of #line directives with -E\n" " -P[1] no/alternative output of #line directives with -E\n"
" -dD -dM dump defines (only with -E)\n" " -d{D|M} dump defines (only with -E)\n"
"Linker options:\n" "Linker options:\n"
" -Ldir add library path 'dir'\n" " -Ldir add library path 'dir'\n"
" -llib link with dynamic or static library 'lib'\n" " -llib link with dynamic or static library 'lib'\n"

12
tccpp.c
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@ -1444,6 +1444,8 @@ static inline void add_cached_include(TCCState *s1, const char *filename, int if
s1->cached_includes_hash[h] = s1->nb_cached_includes; s1->cached_includes_hash[h] = s1->nb_cached_includes;
} }
#define ONCE_PREFIX "#ONCE#"
static void pragma_parse(TCCState *s1) static void pragma_parse(TCCState *s1)
{ {
next_nomacro(); next_nomacro();
@ -1475,10 +1477,12 @@ static void pragma_parse(TCCState *s1)
tcc_warning("unbalanced #pragma pop_macro"); tcc_warning("unbalanced #pragma pop_macro");
} else if (tok == TOK_once) { } else if (tok == TOK_once) {
char buf1[sizeof file->filename]; char buf1[sizeof(file->filename) + sizeof(ONCE_PREFIX)];
strcpy(buf1, ONCE_PREFIX);
pstrcpy(buf1, sizeof(buf1), "#once#"); strcat(buf1, file->filename);
pstrcat(buf1, sizeof(buf1), file->filename); #if PATHCMP==stricmp
strupr(buf1);
#endif
add_cached_include(s1, file->filename, tok_alloc(buf1, strlen(buf1))->tok); add_cached_include(s1, file->filename, tok_alloc(buf1, strlen(buf1))->tok);
} else if (s1->ppfp) { } else if (s1->ppfp) {
/* tcc -E: keep pragmas below unchanged */ /* tcc -E: keep pragmas below unchanged */