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commit 2868e0703d5b8c8e60c6f60de13e876c4d85daa0
Author: Andreas Schwab <schwab@suse.de>
Date: Mon Aug 11 11:18:26 2014 +0200
Filter out PTHREAD_MUTEX_NO_ELISION_NP bit in pthread_mutexattr_gettype (BZ #15790)
pthread_mutexattr_settype adds PTHREAD_MUTEX_NO_ELISION_NP to kind,
which is an internal flag that pthread_mutexattr_gettype shouldn't
expose, since pthread_mutexattr_settype wouldn't accept it.
Index: glibc-2.17-c758a686/nptl/Makefile
===================================================================
--- glibc-2.17-c758a686.orig/nptl/Makefile
+++ glibc-2.17-c758a686/nptl/Makefile
@@ -252,6 +252,7 @@ tests = tst-typesizes \
tst-exit1 tst-exit2 tst-exit3 \
tst-stdio1 tst-stdio2 \
tst-stack1 tst-stack2 tst-stack3 tst-stack4 tst-pthread-getattr \
+ tst-pthread-mutexattr \
tst-unload \
tst-dlsym1 \
tst-sysconf \
Index: glibc-2.17-c758a686/nptl/pthread_mutexattr_gettype.c
===================================================================
--- glibc-2.17-c758a686.orig/nptl/pthread_mutexattr_gettype.c
+++ glibc-2.17-c758a686/nptl/pthread_mutexattr_gettype.c
@@ -28,7 +28,8 @@ pthread_mutexattr_gettype (attr, kind)
iattr = (const struct pthread_mutexattr *) attr;
- *kind = iattr->mutexkind & ~PTHREAD_MUTEXATTR_FLAG_BITS;
+ *kind = (iattr->mutexkind & ~PTHREAD_MUTEXATTR_FLAG_BITS
+ & ~PTHREAD_MUTEX_NO_ELISION_NP);
return 0;
}
Index: glibc-2.17-c758a686/nptl/tst-pthread-mutexattr.c
===================================================================
--- /dev/null
+++ glibc-2.17-c758a686/nptl/tst-pthread-mutexattr.c
@@ -0,0 +1,60 @@
+/* Make sure that pthread_mutexattr_gettype returns a valid kind.
+
+ Copyright (C) 2015 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
+
+#include <stdio.h>
+#include <string.h>
+#include <pthread.h>
+
+static int
+do_test (void)
+{
+ pthread_mutexattr_t attr;
+ int kind;
+ int error;
+
+ error = pthread_mutexattr_init (&attr);
+ if (error)
+ {
+ printf ("pthread_mutexattr_init: %s\n", strerror (error));
+ return 1;
+ }
+ error = pthread_mutexattr_settype (&attr, PTHREAD_MUTEX_DEFAULT);
+ if (error)
+ {
+ printf ("pthread_mutexattr_settype (1): %s\n", strerror (error));
+ return 1;
+ }
+ error = pthread_mutexattr_gettype (&attr, &kind);
+ if (error)
+ {
+ printf ("pthread_mutexattr_gettype: %s\n", strerror (error));
+ return 1;
+ }
+ error = pthread_mutexattr_settype (&attr, kind);
+ if (error)
+ {
+ printf ("pthread_mutexattr_settype (2): %s\n", strerror (error));
+ return 1;
+ }
+ return 0;
+}
+
+
+#define TEST_FUNCTION do_test ()
+#include "../test-skeleton.c"