Declare pthread_atfork in unistd.h for UNIX98 (bug 20044)

Declare pthread_atfork in unistd.h for UNIX98 (bug 20044)

[Joseph Myers]

For UNIX98 (only), unistd.h should declare pthread_atfork, but that
declaration is missing.  This patch adds it.

Tested for x86_64 and x86 (testsuite, and that installed stripped
shared libraries are unchanged by the patch).

[The conform/Makefile XFAIL removal depends on
<https://sourceware.org/ml/libc-alpha/2016-05/msg00054.html> (pending
review) also being applied.]

2016-05-05  Joseph Myers  <joseph@codesourcery.com>

	[BZ #20044]
	* posix/unistd.h [__USE_UNIX98 && !__USE_XOPEN2K]
	(pthread_atfork): New prototype.
	* conform/Makefile (test-xfail-UNIX98/unistd.h/conform): Remove
	variable.

diff --git a/conform/Makefile b/conform/Makefile
index d5273c1..a8f3af8 100644
--- a/conform/Makefile
+++ b/conform/Makefile
@@ -197,7 +197,6 @@ test-xfail-UNIX98/signal.h/conform = yes
 test-xfail-UNIX98/stdlib.h/conform = yes
 test-xfail-UNIX98/sys/wait.h/conform = yes
 test-xfail-UNIX98/ucontext.h/conform = yes
-test-xfail-UNIX98/unistd.h/conform = yes
 test-xfail-XOPEN2K/semaphore.h/conform = yes
 test-xfail-XOPEN2K/signal.h/conform = yes
 test-xfail-XOPEN2K/sys/wait.h/conform = yes
diff --git a/posix/unistd.h b/posix/unistd.h
index 4722f7f..7486ecf 100644
--- a/posix/unistd.h
+++ b/posix/unistd.h
@@ -1150,6 +1150,15 @@ extern char *cuserid (char *__s);
 #endif
 
 
+/* Unix98 requires this function to be declared here.  In other
+   standards it is in <pthread.h>.  */
+#if defined __USE_UNIX98 && !defined __USE_XOPEN2K
+extern int pthread_atfork (void (*__prepare) (void),
+			   void (*__parent) (void),
+			   void (*__child) (void)) __THROW;
+#endif
+
+
 /* Define some macros helping to catch buffer overflows.  */
 #if __USE_FORTIFY_LEVEL > 0 && defined __fortify_function
 # include <bits/unistd.h>

-- 
Joseph S. Myers
joseph@codesourcery.com

Re: Declare pthread_atfork in unistd.h for UNIX98 (bug 20044)

[Mike Frysinger]

[-- Attachment #1: Type: text/plain, Size: 169 bytes --]

On 05 May 2016 15:30, Joseph Myers wrote:
> For UNIX98 (only), unistd.h should declare pthread_atfork, but that
> declaration is missing.  This patch adds it.

OK
-mike

[-- Attachment #2: Digital signature --]
[-- Type: application/pgp-signature, Size: 819 bytes --]