diff options
| author | bje <bje@138bc75d-0d04-0410-961f-82ee72b054a4> | 2009-11-23 04:42:32 +0000 |
|---|---|---|
| committer | bje <bje@138bc75d-0d04-0410-961f-82ee72b054a4> | 2009-11-23 04:42:32 +0000 |
| commit | 01401934e56c424a09999977bdce54b2db33e929 (patch) | |
| tree | 4de5ac8ddb846000f3be54cbd7905854fe6a78e7 /libiberty | |
| parent | 4fb89a65e80877a98409db4d64588e3c55b42df3 (diff) | |
| download | gcc-01401934e56c424a09999977bdce54b2db33e929.tar.gz | |
* 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.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@154431 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'libiberty')
| -rw-r--r-- | libiberty/ChangeLog | 7 | ||||
| -rw-r--r-- | libiberty/pex-unix.c | 6 |
2 files changed, 11 insertions, 2 deletions
diff --git a/libiberty/ChangeLog b/libiberty/ChangeLog index 4d16be4132e..79e0462dd26 100644 --- a/libiberty/ChangeLog +++ b/libiberty/ChangeLog @@ -1,3 +1,10 @@ +2009-11-23 Ben Elliston <bje@au.ibm.com> + Ian Lance Taylor <iant@google.com> + + * 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 <planet36@gmail.com> * dyn-string.c (dyn_string_append_char): Fix typo in comment. diff --git a/libiberty/pex-unix.c b/libiberty/pex-unix.c index 3753812b314..4428f60863f 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. */ |