re PR middle-end/63884 (ICE: SIGSEGV in is_sec_implicit_index_fn with -fcilkplus…

re PR middle-end/63884 (ICE: SIGSEGV in is_sec_implicit_index_fn with -fcilkplus and __builtin_sadd_overflow())

	PR middle-end/63884
c-family/
	* array-notation-common.c (is_sec_implicit_index_fn): Return false
	for NULL fndecl.
	(extract_array_notation_exprs): Return for NULL node.
testsuite/
	* c-c++-common/cilk-plus/AN/pr63884.c: New test.

From-SVN: r217612

gcc/c-family/ChangeLog

+2014-11-15  Marek Polacek  <polacek@redhat.com>
+
+	PR middle-end/63884
+	* array-notation-common.c (is_sec_implicit_index_fn): Return false
+	for NULL fndecl.
+	(extract_array_notation_exprs): Return for NULL node.
+
 2014-11-12  Joseph Myers  <joseph@codesourcery.com>
 
 	* c-cppbuiltin.c (c_cpp_builtins_optimize_pragma): Define and

gcc/c-family/array-notation-common.c

@@ -35,6 +35,9 @@ along with GCC; see the file COPYING3.  If not see
 bool
 is_sec_implicit_index_fn (tree fndecl)
 {
+  if (!fndecl)
+    return false;
+
   if (TREE_CODE (fndecl) == ADDR_EXPR)
     fndecl = TREE_OPERAND (fndecl, 0);
 
@@ -327,6 +330,9 @@ extract_array_notation_exprs (tree node, bool ignore_builtin_fn,
 			      vec<tree, va_gc> **array_list)
 {
   size_t ii = 0;  
+
+  if (!node)
+    return;
   if (TREE_CODE (node) == ARRAY_NOTATION_REF)
     {
       vec_safe_push (*array_list, node);

gcc/testsuite/ChangeLog

+2014-11-15  Marek Polacek  <polacek@redhat.com>
+
+	PR middle-end/63884
+	* c-c++-common/cilk-plus/AN/pr63884.c: New test.
+
 2014-11-15  Francois-Xavier Coudert  <fxcoudert@gcc.gnu.org>
 
 	PR target/60104

gcc/testsuite/c-c++-common/cilk-plus/AN/pr63884.c

+/* PR middle-end/63884 */
+/* { dg-do compile } */
+/* { dg-options "-fcilkplus" } */
+
+int
+foo (int x, int y)
+{
+  int r;
+  return __builtin_sadd_overflow (x, y, &r);
+}