gcc/gcc41-pr32468.patch

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2007-06-26 13:12:19 +00:00
2007-06-25 Jakub Jelinek <jakub@redhat.com>
PR libgomp/32468
* sections.c (GOMP_parallel_sections_start): Only decrease
number of threads to COUNT if dyn_var is true.
* libgomp.c/pr32468.c: New test.
--- libgomp/sections.c.jj 2006-10-05 00:24:40.000000000 +0200
+++ libgomp/sections.c 2007-06-25 22:03:17.000000000 +0200
@@ -1,4 +1,4 @@
-/* Copyright (C) 2005 Free Software Foundation, Inc.
+/* Copyright (C) 2005, 2007 Free Software Foundation, Inc.
Contributed by Richard Henderson <rth@redhat.com>.
This file is part of the GNU OpenMP Library (libgomp).
@@ -106,7 +106,7 @@ GOMP_parallel_sections_start (void (*fn)
struct gomp_work_share *ws;
num_threads = gomp_resolve_num_threads (num_threads);
- if (num_threads > count)
+ if (gomp_dyn_var && num_threads > count)
num_threads = count;
ws = gomp_new_work_share (false, num_threads);
--- libgomp/testsuite/libgomp.c/pr32468.c.jj 2007-06-25 21:51:07.000000000 +0200
+++ libgomp/testsuite/libgomp.c/pr32468.c 2007-06-25 21:55:44.000000000 +0200
@@ -0,0 +1,26 @@
+/* PR libgomp/32468 */
+/* { dg-do run } */
+
+#include <omp.h>
+#include <stdlib.h>
+
+int
+main (void)
+{
+ int res[2] = { -1, -1 };
+ omp_set_dynamic (0);
+ omp_set_num_threads (4);
+#pragma omp parallel
+ {
+ #pragma omp sections
+ {
+ #pragma omp section
+ res[0] = omp_get_num_threads () != 4;
+ #pragma omp section
+ res[1] = omp_get_num_threads () != 4;
+ }
+ }
+ if (res[0] != 0 || res[1] != 0)
+ abort ();
+ return 0;
+}