On Thu, Apr 05, 2012 at 01:16:01PM -0500, Jonathan Nieder wrote:
> Ramsay Jones wrote:
>
> > CC run-command.o
> > run-command.c: In function 'sane_execvp':
> > run-command.c:124: error: invalid use of void expression
> > make: *** [run-command.o] Error 1
> >
> > My first reaction was to simply remove the conditional since, if execvp()
> > returns at all, the result will always be -1 and so the condition will
> > always be false. ie. the conditional is pointless.
> >
> > However, I found the incorrect return type of the mingw_execv[p]() to be
> > a gratuitous incompatibility, so ... :-P
Yeah, it is just asking for trouble to #define a new execvp that does
not match the declaration of the existing one, so I think Ramsay's patch
is good.
> My bad. I agree that in addition to making the return type fix,
> squashing the following into jk/run-command-eacces would be a good
> idea.
>
> diff --git i/run-command.c w/run-command.c
> index 04f0190d..fcd7e192 100644
> --- i/run-command.c
> +++ w/run-command.c
> @@ -59,8 +59,7 @@ static int exists_in_PATH(const char *file)
>
> int sane_execvp(const char *file, char * const argv[])
> {
> - if (!execvp(file, argv))
> - return 0;
> + execvp(file, argv);
I don't have a strong opinion. The "return 0" is a little misleading,
since it will never be called, but I think we should at least have a
comment like:
diff --git a/run-command.c b/run-command.c
index 7123436..5b6a368 100644
--- a/run-command.c
+++ b/run-command.c
@@ -117,8 +117,11 @@ static int exists_in_PATH(const char *file)
int sane_execvp(const char *file, char * const argv[])
{
- if (!execvp(file, argv))
- return 0;
+ /*
+ * No need to check the return value; if it returns at all, an error
+ * occurred.
+ */
+ execvp(file, argv);
/*
* When a command can't be found because one of the directories
--
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