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[C++] PR 49838

Message ID 4E2D690F.1000503@oracle.com
State New
Headers show

Commit Message

Paolo Carlini July 25, 2011, 1:01 p.m. UTC 
Hi,

I have this patchlet for an ICE after error on invalid. Is it OK?

Tested x86_64-linux.

Paolo.

////////////////////////
/cp
2011-07-25  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/49838
	* parser.c (cp_parser_perform_range_for_lookup): Early return if
	error_operand_p (range).

/testsuite
2011-07-25  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/49838
	* g++.dg/cpp0x/range-for19.C: New.
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Patch

Index: gcc/testsuite/g++.dg/cpp0x/range-for19.C
===================================================================
--- gcc/testsuite/g++.dg/cpp0x/range-for19.C	(revision 0)
+++ gcc/testsuite/g++.dg/cpp0x/range-for19.C	(revision 0)
@@ -0,0 +1,11 @@ 
+// PR c++/49838
+
+// { dg-do compile }
+// { dg-options "-std=c++0x" }
+
+int main()
+{
+  auto a;        // { dg-error "no initializer" }
+  for(auto i: a) // { dg-error "deduce" }
+    ;
+}
Index: gcc/cp/parser.c
===================================================================
--- gcc/cp/parser.c	(revision 176718)
+++ gcc/cp/parser.c	(working copy)
@@ -8793,6 +8793,9 @@  cp_convert_range_for (tree statement, tree range_d
 static tree
 cp_parser_perform_range_for_lookup (tree range, tree *begin, tree *end)
 {
+  if (error_operand_p (range))
+    return error_mark_node;
+
   if (!COMPLETE_TYPE_P (complete_type (TREE_TYPE (range))))
     {
       error ("range-based %<for%> expression of type %qT "