[Bug c++/56684] New: [4.8 Regression] [C++0x] ICE: unexpected expression 'T' of kind template_parm_index

[zsojka at seznam dot cz]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56684

             Bug #: 56684
           Summary: [4.8 Regression] [C++0x] ICE: unexpected expression
                    'T' of kind template_parm_index
    Classification: Unclassified
           Product: gcc
           Version: 4.8.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: zsojka@seznam.cz


Created attachment 29705
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=29705
reduced testcase

Compiler output:
$ gcc -std=gnu++0x testcase.C 
testcase.C: In constructor 'S<T>::S()':
testcase.C:4:11: internal compiler error: unexpected expression 'T' of kind
template_parm_index
   S() { 1 << Ti; }
           ^
0x72e441 cxx_eval_constant_expression
        /mnt/svn/gcc-trunk/gcc/cp/semantics.c:8106
0x731446 cxx_eval_outermost_constant_expr
        /mnt/svn/gcc-trunk/gcc/cp/semantics.c:8126
0x7342e7 maybe_constant_value(tree_node*)
        /mnt/svn/gcc-trunk/gcc/cp/semantics.c:8237
0x6ddc84 cp_build_binary_op(unsigned int, tree_code, tree_node*, tree_node*,
int)
        /mnt/svn/gcc-trunk/gcc/cp/typeck.c:4148
0x5b81f7 build_new_op_1
        /mnt/svn/gcc-trunk/gcc/cp/call.c:5399
0x5b8b27 build_new_op(unsigned int, tree_code, int, tree_node*, tree_node*,
tree_node*, tree_node**, int)
        /mnt/svn/gcc-trunk/gcc/cp/call.c:5444
0x6cb8e2 build_x_binary_op(unsigned int, tree_code, tree_node*, tree_code,
tree_node*, tree_code, tree_node**, int)
        /mnt/svn/gcc-trunk/gcc/cp/typeck.c:3684
0x60495a tsubst_copy_and_build(tree_node*, tree_node*, int, tree_node*, bool,
bool)
        /mnt/svn/gcc-trunk/gcc/cp/pt.c:13685
0x608154 fold_non_dependent_expr_sfinae(tree_node*, int)
        /mnt/svn/gcc-trunk/gcc/cp/pt.c:5071
0x6082ac build_non_dependent_expr(tree_node*)
        /mnt/svn/gcc-trunk/gcc/cp/pt.c:20446
0x713540 finish_expr_stmt(tree_node*)
        /mnt/svn/gcc-trunk/gcc/cp/semantics.c:616
0x6a4027 cp_parser_statement
        /mnt/svn/gcc-trunk/gcc/cp/parser.c:8941
0x6a52be cp_parser_statement_seq_opt
        /mnt/svn/gcc-trunk/gcc/cp/parser.c:9207
0x6a5406 cp_parser_compound_statement
        /mnt/svn/gcc-trunk/gcc/cp/parser.c:9161
0x6b6843 cp_parser_function_body
        /mnt/svn/gcc-trunk/gcc/cp/parser.c:17776
0x6b6843 cp_parser_ctor_initializer_opt_and_function_body
        /mnt/svn/gcc-trunk/gcc/cp/parser.c:17812
0x6b78cf cp_parser_function_definition_after_declarator
        /mnt/svn/gcc-trunk/gcc/cp/parser.c:21787
0x69dfdc cp_parser_late_parsing_for_member
        /mnt/svn/gcc-trunk/gcc/cp/parser.c:22428
0x69dfdc cp_parser_class_specifier_1
        /mnt/svn/gcc-trunk/gcc/cp/parser.c:18535
0x69dfdc cp_parser_class_specifier
        /mnt/svn/gcc-trunk/gcc/cp/parser.c:18559
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:
r196855 - crash