re PR c++/50220 ([C++0x] [4.7 Regression] ICE when capturing a by-reference…

re PR c++/50220 ([C++0x] [4.7 Regression] ICE when capturing a by-reference template function argument in a lambda)

	PR c++/50220
	* semantics.c (add_capture): Call complete_type for copy.

From-SVN: r178326

gcc/cp/ChangeLog

 2011-08-30  Jason Merrill  <jason@redhat.com>
 
+	PR c++/50220
+	* semantics.c (add_capture): Call complete_type for copy.
+
 	PR c++/50234
 	* semantics.c (cxx_eval_component_reference): Handle
 	value-initialization for omitted initializers.

gcc/cp/semantics.c

@@ -8651,6 +8651,9 @@ add_capture (tree lambda, tree id, tree initializer, bool by_reference_p,
       if (!real_lvalue_p (initializer))
 	error ("cannot capture %qE by reference", initializer);
     }
+  else
+    /* Capture by copy requires a complete type.  */
+    type = complete_type (type);
 
   /* Add __ to the beginning of the field name so that user code
      won't find the field with name lookup.  We can't just leave the name

gcc/testsuite/ChangeLog

 2011-08-30  Jason Merrill  <jason@redhat.com>
 
+	PR c++/50220
+	* g++.dg/cpp0x/lambda/lambda-50220.C: New.
+
 	PR c++/50234
 	* g++.dg/cpp0x/constexpr-value3.C: New.
 

gcc/testsuite/g++.dg/cpp0x/lambda/lambda-50220.C

+// PR c++/50220
+// { dg-options -std=c++0x }
+
+template<typename Foo> struct Foobar {};
+
+void foobar(const Foobar<void>& obj)
+{
+  [obj](){}();
+}