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re PR libgomp/43569 (libgomp: Conditional jump or move depends on uninitialised value) 

PR libgomp/43569
	* sections.c (gomp_sections_init): Initialize ws->mode.

From-SVN: r158564
This commit is contained in:
Jakub Jelinek 2010-04-20 17:36:45 +02:00 committed by Jakub Jelinek
parent a837268b2b
commit 5221d7a91b
2 changed files with 23 additions and 2 deletions
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5
libgomp/ChangeLog
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@ -1,3 +1,8 @@
2010-04-20 Jakub Jelinek <jakub@redhat.com>
PR libgomp/43569
* sections.c (gomp_sections_init): Initialize ws->mode.
2010-04-14 Uros Bizjak <ubizjak@gmail.com> 2010-04-14 Uros Bizjak <ubizjak@gmail.com>
* acinclude.m4 (LIBGOMP_CHECK_SYNC_BUILTINS): Remove set but * acinclude.m4 (LIBGOMP_CHECK_SYNC_BUILTINS): Remove set but

20
libgomp/sections.c
View File

@ -1,4 +1,4 @@
/* Copyright (C) 2005, 2007, 2008, 2009 Free Software Foundation, Inc. /* Copyright (C) 2005, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
Contributed by Richard Henderson <rth@redhat.com>. Contributed by Richard Henderson <rth@redhat.com>.
This file is part of the GNU OpenMP Library (libgomp). This file is part of the GNU OpenMP Library (libgomp).
@ -34,9 +34,25 @@ gomp_sections_init (struct gomp_work_share *ws, unsigned count)
{ {
ws->sched = GFS_DYNAMIC; ws->sched = GFS_DYNAMIC;
ws->chunk_size = 1; ws->chunk_size = 1;
ws->end = count + 1; ws->end = count + 1L;
ws->incr = 1; ws->incr = 1;
ws->next = 1; ws->next = 1;
#ifdef HAVE_SYNC_BUILTINS
/* Prepare things to make each iteration faster. */
if (sizeof (long) > sizeof (unsigned))
ws->mode = 1;
else
{
struct gomp_thread *thr = gomp_thread ();
struct gomp_team *team = thr->ts.team;
long nthreads = team ? team->nthreads : 1;
ws->mode = ((nthreads | ws->end)
< 1UL << (sizeof (long) * __CHAR_BIT__ / 2 - 1));
}
#else
ws->mode = 0;
#endif
} }
/* This routine is called when first encountering a sections construct /* This routine is called when first encountering a sections construct