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From: "mpolacek at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/57041] [4.7/4.8/4.9 Regression] ICE in lookup_field_1, at cp/search.c:376 (with dot-prefixed structure initialisation)
Date: Tue, 23 Apr 2013 10:06:00 -0000
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57041

--- Comment #3 from Marek Polacek <mpolacek at gcc dot gnu.org> 2013-04-23 10:06:37 UTC ---
lookup_field_1 instead of IDENTIFIER_NODE gets the error_mark_node, and the
following assert chokes on it:
  gcc_assert (identifier_p (name));

It seems that if we just return NULL_TREE in that case, everything is fine.

--- a/gcc/cp/search.c
+++ b/gcc/cp/search.c
@@ -381,7 +381,7 @@ lookup_field_1 (tree type, tree name, bool want_type)
 {
   tree field;

-  gcc_assert (identifier_p (name));
+  gcc_assert (identifier_p (name) || name == error_mark_node);

   if (TREE_CODE (type) == TEMPLATE_TYPE_PARM
       || TREE_CODE (type) == BOUND_TEMPLATE_TEMPLATE_PARM