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* pex-unix.c (pex_child_error): Improve warning avoidance by

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checking the results of write(3) and exiting with -2 if any write
	returns a negative value.
This commit is contained in:
Ben Elliston 2009-11-23 04:42:14 +00:00
parent 197fa1aa2c
commit c90188f694
2 changed files with 11 additions and 2 deletions
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6
libiberty/pex-unix.c
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@ -368,7 +368,8 @@ static void
pex_child_error (struct pex_obj *obj, const char *executable,
const char *errmsg, int err)
{
#define writeerr(s) if (write (STDERR_FILE_NO, s, strlen (s))) {}
int retval = 0;
#define writeerr(s) retval |= (write (STDERR_FILE_NO, s, strlen (s)) < 0)
writeerr (obj->pname);
writeerr (": error trying to exec '");
writeerr (executable);
@ -378,7 +379,8 @@ pex_child_error (struct pex_obj *obj, const char *executable,
writeerr (xstrerror (err));
writeerr ("\n");
#undef writeerr
_exit (-1);
/* Exit with -2 if the error output failed, too. */
_exit (retval == 0 ? -1 : -2);
}
/* Execute a child. */