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Windows: Make sure argv[0] has a path

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Since the exec-path on Windows is derived from the program invocation path,
we must ensure that argv[0] always has a path. Unfortunately, if a program
is invoked from CMD, argv[0] has no path. But on the other hand, the
C runtime offers a global variable, _pgmptr, that always has the full path
to the program. We hook into main() with a preprocessor macro, where we
replace argv[0].

Signed-off-by: Johannes Sixt <johannes.sixt@telecom.at>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Johannes Sixt
2008-07-21 21:19:57 +02:00
committed by Junio C Hamano
parent bf74a88244
commit 35eeef4722
1 changed files with 12 additions and 0 deletions
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12
compat/mingw.h
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@ -223,3 +223,15 @@ void mingw_open_html(const char *path);
char **copy_environ(void); char **copy_environ(void);
void free_environ(char **env); void free_environ(char **env);
char **env_setenv(char **env, const char *name); char **env_setenv(char **env, const char *name);
/*
* A replacement of main() that ensures that argv[0] has a path
*/
#define main(c,v) main(int argc, const char **argv) \
{ \
static int mingw_main(); \
argv[0] = xstrdup(_pgmptr); \
return mingw_main(argc, argv); \
} \
static int mingw_main(c,v)