PR c++/16338
* cp-tree.h (DECL_INTEGRAL_CONSTANT_VAR_P): New macro.
* call.c (null_ptr_cst_p): Handle variables with constant
initializers.
* pt.c (convert_nontype_argument): Use
DECL_INTEGRAL_CONSTANT_VAR_P.
* semantics.c (finish_id_expression): Likewise.
PR c++~/16489
* decl.c (duplicate_decls): Reject duplicate namespace
declarations.
PR c++/16810
* typeck.c (build_ptrmemfunc): Loosen assertion.
PR c++/16338
* g++.dg/init/null1.C: New test.
* g++.dg/tc1/dr76.C: Adjust error marker.
PR c++/16489
* g++.dg/parse/namespace10.C: New test.
PR c++/16810
* g++.dg/inherit/ptrmem2.C: New test.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@85421
138bc75d-0d04-0410-961f-
82ee72b054a4