[Bug c++/57016] New: [4.9 Regression] [C++0x] ICE: unexpected expression '__is_final(hash<int>)' of kind trait_expr

[zsojka at seznam dot cz]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57016

             Bug #: 57016
           Summary: [4.9 Regression] [C++0x] ICE: unexpected expression
                    '__is_final(hash<int>)' of kind trait_expr
    Classification: Unclassified
           Product: gcc
           Version: 4.9.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: zsojka@seznam.cz


Created attachment 29905
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=29905
autoreduced testcase

Compiler output:
$ gcc -std=gnu++0x testcase.C 
testcase.C: In instantiation of 'class unordered_set<int>':
testcase.C:130:16:   required from here
testcase.C:127:49: internal compiler error: unexpected expression
'__is_final(hash<int>)' of kind trait_expr
   template < typename > pair < iterator, bool > emplace ();
                                                 ^
0x72b0a8 cxx_eval_constant_expression
        /mnt/svn/gcc-trunk/gcc/cp/semantics.c:8158
0x72dfc6 cxx_eval_outermost_constant_expr
        /mnt/svn/gcc-trunk/gcc/cp/semantics.c:8178
0x617685 convert_nontype_argument
        /mnt/svn/gcc-trunk/gcc/cp/pt.c:5601
0x617685 convert_template_argument
        /mnt/svn/gcc-trunk/gcc/cp/pt.c:6382
0x610c1d coerce_template_parms
        /mnt/svn/gcc-trunk/gcc/cp/pt.c:6721
0x619498 lookup_template_class_1
        /mnt/svn/gcc-trunk/gcc/cp/pt.c:7280
0x619498 lookup_template_class(tree_node*, tree_node*, tree_node*, tree_node*,
int, int)
        /mnt/svn/gcc-trunk/gcc/cp/pt.c:7577
0x61ea91 tsubst_aggr_type
        /mnt/svn/gcc-trunk/gcc/cp/pt.c:9837
0x6121c0 tsubst(tree_node*, tree_node*, int, tree_node*)
        /mnt/svn/gcc-trunk/gcc/cp/pt.c:11176
0x61e06a tsubst_template_args
        /mnt/svn/gcc-trunk/gcc/cp/pt.c:9634
0x61e14b tsubst_template_args
        /mnt/svn/gcc-trunk/gcc/cp/pt.c:9616
0x61ea6e tsubst_aggr_type
        /mnt/svn/gcc-trunk/gcc/cp/pt.c:9831
0x6121c0 tsubst(tree_node*, tree_node*, int, tree_node*)
        /mnt/svn/gcc-trunk/gcc/cp/pt.c:11176
0x61e06a tsubst_template_args
        /mnt/svn/gcc-trunk/gcc/cp/pt.c:9634
0x61ea6e tsubst_aggr_type
        /mnt/svn/gcc-trunk/gcc/cp/pt.c:9831
0x6121c0 tsubst(tree_node*, tree_node*, int, tree_node*)
        /mnt/svn/gcc-trunk/gcc/cp/pt.c:11176
0x6353d5 tsubst_qualified_id
        /mnt/svn/gcc-trunk/gcc/cp/pt.c:11967
0x5ff41f tsubst_copy_and_build(tree_node*, tree_node*, int, tree_node*, bool,
bool)
        /mnt/svn/gcc-trunk/gcc/cp/pt.c:13702
0x60809f tsubst_expr
        /mnt/svn/gcc-trunk/gcc/cp/pt.c:13383
0x614d79 tsubst_template_arg
        /mnt/svn/gcc-trunk/gcc/cp/pt.c:9100
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.

Tested revisions:
r198108 - crash
4.8 r198108 - OK