[Bug c++/55058] [4.7/4.8 Regression] Unexpected invalid type conversion error

[sebastian.huber@embedded-brains.de]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55058

Sebastian Huber <sebastian.huber@embedded-brains.de> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |jason at gcc dot gnu.org

--- Comment #6 from Sebastian Huber <sebastian.huber@embedded-brains.de> 2012-10-30 09:18:03 UTC ---
If I revert parts of commit 44f861fca343148a1b0720105ec2b7f14bbcc849

diff --git a/gcc/cp/pt.c b/gcc/cp/pt.c
index 1ff1c73..8f5b9f7 100644
--- a/gcc/cp/pt.c
+++ b/gcc/cp/pt.c
@@ -11015,9 +11015,7 @@ tsubst (tree t, tree args, tsubst_flags_t complain,
tree in_decl)
             complain | tf_ignore_bad_quals);
          return r;
        }
-      else
-       /* We don't have an instantiation yet, so drop the typedef.  */
-       t = DECL_ORIGINAL_TYPE (decl);
+      /* Else we must be instantiating the typedef, so fall through.  */
     }

   if (type

mentioned in

http://gcc.gnu.org/ml/gcc/2012-10/msg00399.html

then, the test case compiles well.