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compat/mingw.[ch]: Change return type of exec functions to int

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The POSIX standard specifies a return type of int for all six exec
functions. In addition, all exec functions return -1 on error, and
simply do not return on success. However, the current emulation of
the exec functions on mingw are declared with a void return type.

This would cause a problem should any code attempt to call the
exec function in a non-void context. In particular, if an exec
function were used in a conditional it would fail to compile.

In order to improve the fidelity of the emulation, we change the
return type of the mingw_execv[p] functions to int and return -1
on error.

Signed-off-by: Ramsay Jones <ramsay@ramsay1.demon.co.uk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Ramsay Jones 2012-04-05 18:48:46 +01:00 committed by Junio C Hamano
parent 828ea97de4
commit 1696d72321
2 changed files with 6 additions and 4 deletions
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6
compat/mingw.c
View file

@ -1003,7 +1003,7 @@ static void mingw_execve(const char *cmd, char *const *argv, char *const *env)
}
}
void mingw_execvp(const char *cmd, char *const *argv)
int mingw_execvp(const char *cmd, char *const *argv)
{
char **path = get_path_split();
char *prog = path_lookup(cmd, path, 0);
@ -1015,11 +1015,13 @@ void mingw_execvp(const char *cmd, char *const *argv)
errno = ENOENT;
free_path_split(path);
return -1;
}
void mingw_execv(const char *cmd, char *const *argv)
int mingw_execv(const char *cmd, char *const *argv)
{
mingw_execve(cmd, argv, environ);
return -1;
}
int mingw_kill(pid_t pid, int sig)

4
compat/mingw.h
View file

@ -274,9 +274,9 @@ int mingw_utime(const char *file_name, const struct utimbuf *times);
pid_t mingw_spawnvpe(const char *cmd, const char **argv, char **env,
const char *dir,
int fhin, int fhout, int fherr);
void mingw_execvp(const char *cmd, char *const *argv);
int mingw_execvp(const char *cmd, char *const *argv);
#define execvp mingw_execvp
void mingw_execv(const char *cmd, char *const *argv);
int mingw_execv(const char *cmd, char *const *argv);
#define execv mingw_execv
static inline unsigned int git_ntohl(unsigned int x)