re PR middle-end/64766 (internal compiler error: tree check: expected block,…

re PR middle-end/64766 (internal compiler error: tree check: expected block, have error_mark in lower_function_body, at gimple-low.c:122)

	PR c/64766
	* c-typeck.c (store_init_value): Don't overwrite DECL_INITIAL
	of FUNCTION_DECLs with error_mark_node.

	* gcc.dg/pr64766.c: New test.

From-SVN: r220152

gcc/c/ChangeLog

+2015-01-27  Jakub Jelinek  <jakub@redhat.com>
+
+	PR c/64766
+	* c-typeck.c (store_init_value): Don't overwrite DECL_INITIAL
+	of FUNCTION_DECLs with error_mark_node.
+
 2015-01-26  Jakub Jelinek  <jakub@redhat.com>
 
 	PR c/64778

gcc/c/c-typeck.c

@@ -6422,7 +6422,8 @@ store_init_value (location_t init_loc, tree decl, tree init, tree origtype)
     warning (OPT_Wtraditional, "traditional C rejects automatic "
 	     "aggregate initialization");
 
-  DECL_INITIAL (decl) = value;
+  if (value != error_mark_node || TREE_CODE (decl) != FUNCTION_DECL)
+    DECL_INITIAL (decl) = value;
 
   /* ANSI wants warnings about out-of-range constant initializers.  */
   STRIP_TYPE_NOPS (value);

gcc/testsuite/ChangeLog

+2015-01-27  Jakub Jelinek  <jakub@redhat.com>
+
+	PR c/64766
+	* gcc.dg/pr64766.c: New test.
+
 2015-01-26  Oleg Endo  <olegendo@gcc.gnu.org>
 
 	PR target/49263

gcc/testsuite/gcc.dg/pr64766.c

+/* PR c/64766 */
+/* { dg-do compile } */
+
+void
+foo ()
+{
+}
+
+void foo () = 0; /* { dg-error "is initialized like a variable|invalid initializer" } */