re PR c/71426 (gcc ICE on x86_64-linux-gnu in get_parm_info, at c/c-decl.c:7059)

	PR c/71426
	* c-decl.c (get_parm_info): Don't crash on an assert on invalid
	code.

	* gcc.dg/noncompile/pr71426.c: New test.

From-SVN: r237196

gcc/c/ChangeLog

@@ -3,6 +3,10 @@
 	PR c/71418
 	* c-decl.c (grokdeclarator): Check TYPE_P.
 
+	PR c/71426
+	* c-decl.c (get_parm_info): Don't crash on an assert on invalid
+	code.
+
 2016-06-07  David Malcolm  <dmalcolm@redhat.com>
 
 	* c-parser.c (c_parser_postfix_expression): In __builtin_offsetof

gcc/c/c-decl.c

@@ -7054,9 +7054,9 @@ get_parm_info (bool ellipsis, tree expr)
 	  break;
 
 	case FUNCTION_DECL:
-	  /*  FUNCTION_DECLs appear when there is an implicit function
-	      declaration in the parameter list.  */
-	  gcc_assert (b->nested);
+	  /* FUNCTION_DECLs appear when there is an implicit function
+	     declaration in the parameter list.  */
+	  gcc_assert (b->nested || seen_error ());
 	  goto set_shadowed;
 
 	case CONST_DECL:

gcc/testsuite/ChangeLog

@@ -3,6 +3,9 @@
 	PR c/71418
 	* gcc.dg/noncompile/pr71418.c: New test.
 
+	PR c/71426
+	* gcc.dg/noncompile/pr71426.c: New test.
+
 2016-06-07  Jan Hubicka  <hubicka@ucw.cz>
 
 	* gcc.dg/ipa/inlinehint-4.c: Disable partial inlining.

gcc/testsuite/gcc.dg/noncompile/pr71426.c

+/* PR c/71426 */
+/* { dg-do compile } */
+/* { dg-options "-w" } */
+
+int f (int x[x - x ()]); /* { dg-error "undeclared" } */