From c90188f694a64cb2b97cb9db99fe0c11aaba43d6 Mon Sep 17 00:00:00 2001 From: Ben Elliston Date: Mon, 23 Nov 2009 04:42:14 +0000 Subject: * pex-unix.c (pex_child_error): Improve warning avoidance by checking the results of write(3) and exiting with -2 if any write returns a negative value. --- libiberty/ChangeLog | 7 +++++++ libiberty/pex-unix.c | 6 ++++-- 2 files changed, 11 insertions(+), 2 deletions(-) (limited to 'libiberty') diff --git a/libiberty/ChangeLog b/libiberty/ChangeLog index 4d16be4..79e0462 100644 --- a/libiberty/ChangeLog +++ b/libiberty/ChangeLog @@ -1,3 +1,10 @@ +2009-11-23 Ben Elliston + Ian Lance Taylor + + * pex-unix.c (pex_child_error): Improve warning avoidance by + checking the results of write(3) and exiting with -2 if any write + returns a negative value. + 2009-11-22 Steve Ward * dyn-string.c (dyn_string_append_char): Fix typo in comment. diff --git a/libiberty/pex-unix.c b/libiberty/pex-unix.c index 3753812..4428f60 100644 --- a/libiberty/pex-unix.c +++ b/libiberty/pex-unix.c @@ -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. */ -- cgit v1.1