re PR c++/38648 (ICE with string literal)

	PR c++/38648
	* typeck.c (cp_build_modify_expr): Check for NULL current_function_decl.

	* g++.dg/expr/string-1.C: New test.
	* g++.dg/expr/string-2.C: New test.

From-SVN: r143245

gcc/cp/ChangeLog

 2009-01-10  Andrew Pinski  <pinskia@gmail.com>
 
+	PR c++/38648
+	* typeck.c (cp_build_modify_expr): Check for NULL current_function_decl.
+
 	PR c++/36695
 	* typeck2.c (build_functional_cast): Check for reference type and NULL
 	PARMS.

gcc/cp/typeck.c

@@ -6026,7 +6026,7 @@ cp_build_modify_expr (tree lhs, enum tree_code modifycode, tree rhs,
 	}
 
       /* Allow array assignment in compiler-generated code.  */
-      if (! DECL_ARTIFICIAL (current_function_decl))
+      if (!current_function_decl || !DECL_ARTIFICIAL (current_function_decl))
 	{
           /* This routine is used for both initialization and assignment.
              Make sure the diagnostic message differentiates the context.  */

gcc/testsuite/ChangeLog

 2009-01-10  Andrew Pinski  <pinskia@gmail.com>
 
+	PR c++/38648
+	* g++.dg/expr/string-1.C: New test.
+	* g++.dg/expr/string-2.C: New test.
+
 	PR c++/36695
 	* g++.dg/ext/complex4.C: New test.
 	* g++.dg/ext/complex5.C: New test.

gcc/testsuite/g++.dg/expr/string-1.C

+// { dg-do compile }
+// This testcase used to seg fault (PR c++/38648)
+
+char a[1];
+
+int foo( // { dg-error "extended initializer lists only available" }
+{
+  a = ""; // { dg-error "" }
+  return 0; // { dg-error "" }
+} // { dg-error "" }

gcc/testsuite/g++.dg/expr/string-2.C

+// { dg-do compile }
+// This testcase used to seg fault (PR c++/38648)
+
+char a[1];
+
+int foo(a = "") // { dg-error "invalid array assignment" }
+{ // { dg-error "" }
+  return 0;
+}
+