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