re PR middle-end/65431 (Invalid read of size 8 at 0x105DBBF8:…

re PR middle-end/65431 (Invalid read of size 8 at 0x105DBBF8: delete_omp_context(unsigned long) (omp-low.c:1586))

	PR middle-end/65431
	* omp-low.c (delete_omp_context): Only splay_tree_delete
	reduction_map in GIMPLE_OMP_TARGET is_gimple_omp_offloaded
	is_gimple_omp_oacc contexts.  Don't look at ctx->outer.

From-SVN: r221459

gcc/ChangeLog

+2015-03-16  Jakub Jelinek  <jakub@redhat.com>
+
+	PR middle-end/65431
+	* omp-low.c (delete_omp_context): Only splay_tree_delete
+	reduction_map in GIMPLE_OMP_TARGET is_gimple_omp_offloaded
+	is_gimple_omp_oacc contexts.  Don't look at ctx->outer.
+
 2015-03-16  Max Ostapenko  <m.ostapenko@partner.samsung.com>
 
 	PR sanitizer/64820

gcc/omp-low.c

@@ -1580,10 +1580,12 @@ delete_omp_context (splay_tree_value value)
     splay_tree_delete (ctx->field_map);
   if (ctx->sfield_map)
     splay_tree_delete (ctx->sfield_map);
+  /* Reduction map is copied to nested contexts, so only delete it in the
+     owner.  */
   if (ctx->reduction_map
-      /* Shared over several omp_contexts.  */
-      && (ctx->outer == NULL
-	  || ctx->reduction_map != ctx->outer->reduction_map))
+      && gimple_code (ctx->stmt) == GIMPLE_OMP_TARGET
+      && is_gimple_omp_offloaded (ctx->stmt)
+      && is_gimple_omp_oacc (ctx->stmt))
     splay_tree_delete (ctx->reduction_map);
 
   /* We hijacked DECL_ABSTRACT_ORIGIN earlier.  We need to clear it before