[Bug c++/59956] internal compiler error: unexpected expression ‘P_S’ of kind template_parm_index

[trippels at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59956

Markus Trippelsdorf <trippels at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2014-01-27
                 CC|                            |trippels at gcc dot gnu.org
   Target Milestone|---                         |4.8.3
     Ever confirmed|0                           |1
      Known to fail|                            |4.8.3, 4.9.0

--- Comment #1 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
Confirmed.

markus@x4 tmp % cat test.ii
template <int> struct A;
template <int> class B {
  template <int A_S> friend void A<A_S>::impl();
};
B<0> a;

markus@x4 tmp % g++ test.ii
test.ii: In instantiation of ‘class B<0>’:
test.ii:5:6:   required from here
test.ii:3:34: internal compiler error: unexpected expression ‘A_S’ of kind
template_parm_index
   template <int A_S> friend void A<A_S>::impl();
                                  ^
0x6e2af5 cxx_eval_constant_expression
        ../../gcc/gcc/cp/semantics.c:9784
0x6e5875 cxx_eval_outermost_constant_expr
        ../../gcc/gcc/cp/semantics.c:9804
0x6e854b maybe_constant_value(tree_node*)
        ../../gcc/gcc/cp/semantics.c:9914
0x5c6512 convert_nontype_argument
        ../../gcc/gcc/cp/pt.c:5671
0x5c6512 convert_template_argument
        ../../gcc/gcc/cp/pt.c:6477
0x5be4a0 coerce_template_parms
        ../../gcc/gcc/cp/pt.c:6851
0x5c8369 lookup_template_class_1
        ../../gcc/gcc/cp/pt.c:7422
0x5c8369 lookup_template_class(tree_node*, tree_node*, tree_node*, tree_node*,
int, int)
        ../../gcc/gcc/cp/pt.c:7720
0x5cdb73 tsubst_aggr_type
        ../../gcc/gcc/cp/pt.c:10023
0x5d2705 tsubst_decl
        ../../gcc/gcc/cp/pt.c:10401
0x5c025f tsubst(tree_node*, tree_node*, int, tree_node*)
        ../../gcc/gcc/cp/pt.c:11349
0x5eed53 tsubst_friend_function
        ../../gcc/gcc/cp/pt.c:8211
0x5eed53 instantiate_class_template_1
        ../../gcc/gcc/cp/pt.c:9176
0x5eed53 instantiate_class_template(tree_node*)
        ../../gcc/gcc/cp/pt.c:9262
0x680473 complete_type(tree_node*)
        ../../gcc/gcc/cp/typeck.c:134
0x569418 start_decl_1(tree_node*, bool)
        ../../gcc/gcc/cp/decl.c:4719
0x5922c7 start_decl(cp_declarator const*, cp_decl_specifier_seq*, int,
tree_node*, tree_node*, tree_node**)
        ../../gcc/gcc/cp/decl.c:4682
0x66c6fe cp_parser_init_declarator
        ../../gcc/gcc/cp/parser.c:16710
0x66e189 cp_parser_simple_declaration
        ../../gcc/gcc/cp/parser.c:11217
0x651463 cp_parser_block_declaration
        ../../gcc/gcc/cp/parser.c:11098
Please submit a full bug report,