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* sem_open.c (sem_open): Rewrite initialization of initsem to

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avoid warnings.
This commit is contained in:
Ulrich Drepper
2009-04-26 18:37:05 +00:00
parent f521be31b9
commit 5efe86507d
2 changed files with 14 additions and 8 deletions
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3
nptl/ChangeLog
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@ -1,5 +1,8 @@
2009-04-26 Ulrich Drepper <drepper@redhat.com> 2009-04-26 Ulrich Drepper <drepper@redhat.com>
* sem_open.c (sem_open): Rewrite initialization of initsem to
avoid warnings.
* sysdeps/unix/sysv/linux/libc_pthread_init.c (__libc_pthread_init): * sysdeps/unix/sysv/linux/libc_pthread_init.c (__libc_pthread_init):
Avoid warning by using may_alias attribute on ptrhack. Avoid warning by using may_alias attribute on ptrhack.

19
nptl/sem_open.c
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@ -1,4 +1,4 @@
/* Copyright (C) 2002, 2003, 2006, 2007 Free Software Foundation, Inc. /* Copyright (C) 2002, 2003, 2006, 2007, 2009 Free Software Foundation, Inc.
This file is part of the GNU C Library. This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@redhat.com>, 2002. Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
@ -302,15 +302,18 @@ sem_open (const char *name, int oflag, ...)
} }
/* Create the initial file content. */ /* Create the initial file content. */
sem_t initsem; union
{
sem_t initsem;
struct new_sem newsem;
} sem;
struct new_sem *iinitsem = (struct new_sem *) &initsem; sem.newsem.value = value;
iinitsem->value = value; sem.newsem.private = 0;
iinitsem->private = 0; sem.newsem.nwaiters = 0;
iinitsem->nwaiters = 0;
/* Initialize the remaining bytes as well. */ /* Initialize the remaining bytes as well. */
memset ((char *) &initsem + sizeof (struct new_sem), '\0', memset ((char *) &sem.initsem + sizeof (struct new_sem), '\0',
sizeof (sem_t) - sizeof (struct new_sem)); sizeof (sem_t) - sizeof (struct new_sem));
tmpfname = (char *) alloca (mountpoint.dirlen + 6 + 1); tmpfname = (char *) alloca (mountpoint.dirlen + 6 + 1);
@ -349,7 +352,7 @@ sem_open (const char *name, int oflag, ...)
break; break;
} }
if (TEMP_FAILURE_RETRY (__libc_write (fd, &initsem, sizeof (sem_t))) if (TEMP_FAILURE_RETRY (__libc_write (fd, &sem.initsem, sizeof (sem_t)))
== sizeof (sem_t) == sizeof (sem_t)
/* Map the sem_t structure from the file. */ /* Map the sem_t structure from the file. */
&& (result = (sem_t *) mmap (NULL, sizeof (sem_t), && (result = (sem_t *) mmap (NULL, sizeof (sem_t),