From: Jakub Jelinek <jakub@redhat.com>
Date: Tue, 14 Feb 2012 23:32:39 +0000 (+0100)
Subject: backport: re PR middle-end/52230 (OpenMP: Simple C program triggers SIGSEGV at execution)
X-Git-Tag: releases/gcc-4.6.3~85
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=bb50f041a6d71af15cab1776906ddb3ddee9458d;p=thirdparty%2Fgcc.git

backport: re PR middle-end/52230 (OpenMP: Simple C program triggers SIGSEGV at execution)

	Backported from mainline
	2012-02-13  Jakub Jelinek  <jakub@redhat.com>

	PR middle-end/52230
	* omp-low.c (expand_omp_for): If a static schedule without
	chunk size has NULL region->cont, force fd.chunk_size to be
	integer_zero_node.

From-SVN: r184240
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 698804e460c2..1ba4443d3b83 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,5 +1,13 @@
 2012-02-14  Jakub Jelinek  <jakub@redhat.com>
 
+	Backported from mainline
+	2012-02-13  Jakub Jelinek  <jakub@redhat.com>
+
+	PR middle-end/52230
+	* omp-low.c (expand_omp_for): If a static schedule without
+	chunk size has NULL region->cont, force fd.chunk_size to be
+	integer_zero_node.
+
 	PR bootstrap/51969
 	Backported from mainline
 	2011-11-08  Michael Matz  <matz@suse.de>
diff --git a/gcc/omp-low.c b/gcc/omp-low.c
index 364f51e3bfd6..bb0017a76713 100644
--- a/gcc/omp-low.c
+++ b/gcc/omp-low.c
@@ -4618,6 +4618,9 @@ expand_omp_for (struct omp_region *region)
     {
       int fn_index, start_ix, next_ix;
 
+      if (fd.chunk_size == NULL
+	  && fd.sched_kind == OMP_CLAUSE_SCHEDULE_STATIC)
+	fd.chunk_size = integer_zero_node;
       gcc_assert (fd.sched_kind != OMP_CLAUSE_SCHEDULE_AUTO);
       fn_index = (fd.sched_kind == OMP_CLAUSE_SCHEDULE_RUNTIME)
 		  ? 3 : fd.sched_kind;