[Bug c++/44175] [C++0x] decltype sometimes cannot recurse

[jason at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44175

--- Comment #6 from Jason Merrill <jason at gcc dot gnu.org> 2011-06-01 
20:27:26 UTC ---
Author: jason
Date: Wed Jun  1 20:27:22 2011
New Revision: 174543

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=174543
Log:
    PR c++/44175
    * pt.c (template_args_equal): Handle one arg being NULL_TREE.
    (deduction_tsubst_fntype): Handle excessive non-infinite recursion.

Added:
    trunk/gcc/testsuite/g++.dg/cpp0x/decltype28.C
    trunk/gcc/testsuite/g++.dg/cpp0x/decltype29.C
Modified:
    trunk/gcc/cp/ChangeLog
    trunk/gcc/cp/pt.c
    trunk/gcc/testsuite/ChangeLog