re PR c++/10278 (ICE in parser)

	PR c++/10278
	* c-common.c (finish_label_address_expr): Handle the
	error_mark_node.

	PR c++/10278
	* g++.dg/parse/crash2.C: New test.

From-SVN: r65116

gcc/ChangeLog

+2003-03-31  Mark Mitchell  <mark@codesourcery.com>
+
+	PR c++/10278
+	* c-common.c (finish_label_address_expr): Handle the
+	error_mark_node.
+
 2003-03-31  Richard Henderson  <rth@redhat.com>
 
 	* real.c (real_identical): Reorg so as to not compare

gcc/c-common.c

@@ -4212,8 +4212,8 @@ c_add_case_label (cases, cond, low_value, high_value)
   return case_label;
 }
 
-/* Finish an expression taking the address of LABEL.  Returns an
-   expression for the address.  */
+/* Finish an expression taking the address of LABEL (an
+   IDENTIFIER_NODE).  Returns an expression for the address.  */
 
 tree 
 finish_label_address_expr (label)
@@ -4229,6 +4229,9 @@ finish_label_address_expr (label)
 	pedwarn ("ISO C forbids taking the address of a label");
     }
 
+  if (label == error_mark_node)
+    return error_mark_node;
+
   label = lookup_label (label);
   if (label == NULL_TREE)
     result = null_pointer_node;

gcc/testsuite/ChangeLog

+2003-03-31  Mark Mitchell  <mark@codesourcery.com>
+
+	PR c++/10278
+	* g++.dg/parse/crash2.C: New test.
+
 2003-03-31  Richard Sandiford  <rsandifo@redhat.com>
 
 	* gcc.c-torture/compile/20030331-1.c: New test, moved from...

gcc/testsuite/g++.dg/parse/crash2.C

+/* { dg-do compile } */
+int main(void)
+{
+  char x, y;
+  if ('A' == x) && ('B' == y)) { } /* { dg-error "" } */
+  if (x == 'A') && (y == 'B')) { } /* { dg-error "" } */
+}