re PR c/64856 (Initializing struct not accepted in gnu99)

	PR c/64856
	* c-typeck.c (process_init_element): Don't always wrap
	COMPOUND_LITERAL_EXPR in a SAVE_EXPR in C99 mode when
	initializing a range of elements.

	* gcc.dg/pr64856.c: New test.

From-SVN: r220550

gcc/c/ChangeLog

+2015-02-09  Marek Polacek  <polacek@redhat.com>
+
+	PR c/64856
+	* c-typeck.c (process_init_element): Don't always wrap
+	COMPOUND_LITERAL_EXPR in a SAVE_EXPR in C99 mode when
+	initializing a range of elements.
+
 2015-02-04  Jakub Jelinek  <jakub@redhat.com>
 
 	PR c/64824

gcc/c/c-typeck.c

@@ -8785,8 +8785,7 @@ process_init_element (location_t loc, struct c_expr value, bool implicit,
       /* If value is a compound literal and we'll be just using its
 	 content, don't put it into a SAVE_EXPR.  */
       if (TREE_CODE (value.value) != COMPOUND_LITERAL_EXPR
-	  || !require_constant_value
-	  || flag_isoc99)
+	  || !require_constant_value)
 	{
 	  tree semantic_type = NULL_TREE;
 	  if (TREE_CODE (value.value) == EXCESS_PRECISION_EXPR)

gcc/testsuite/ChangeLog

+2015-02-09  Marek Polacek  <polacek@redhat.com>
+
+	PR c/64856
+	* gcc.dg/pr64856.c: New test.
+
 2015-02-09  Jakub Jelinek  <jakub@redhat.com>
 
 	PR target/64979

gcc/testsuite/gcc.dg/pr64856.c

+/* PR c/64856 */
+/* { dg-do compile } */
+/* { dg-options "" } */
+
+struct A {
+  unsigned long b;
+};
+
+struct B {
+  struct A c[5];
+};
+
+struct B d = { .c = { [0 ... 4] = (struct A){ .b = 2 } } };