[Bug c++/79294] New: [7 Regression] ICE in convert_nontype_argument, at cp/pt.c:6812

["doko at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79294

            Bug ID: 79294
           Summary: [7 Regression] ICE in convert_nontype_argument, at
                    cp/pt.c:6812
           Product: gcc
           Version: 7.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: doko at gcc dot gnu.org
  Target Milestone: ---

Created attachment 40627
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=40627&action=edit
preprocessed source

seen with r244943 20170129

$ cat python.ii
template <int()> struct a;
template <int(b)> a < b

$ g++ -c -std=c++11 python.ii
python.ii:2:23: internal compiler error: in convert_nontype_argument, at
cp/pt.c:6812
 template <int(b)> a < b
                       ^
0x62d24a convert_nontype_argument
        ../../src/gcc/cp/pt.c:6811
0x62d24a convert_template_argument
        ../../src/gcc/cp/pt.c:7648
0x62de3c coerce_template_parms
        ../../src/gcc/cp/pt.c:8108
0x630139 lookup_template_class_1
        ../../src/gcc/cp/pt.c:8632
0x630139 lookup_template_class(tree_node*, tree_node*, tree_node*, tree_node*,
int, int)
        ../../src/gcc/cp/pt.c:8977
0x6c8bfd finish_template_type(tree_node*, tree_node*, int)
        ../../src/gcc/cp/semantics.c:3145
0x67923e cp_parser_template_id
        ../../src/gcc/cp/parser.c:15488
0x6793df cp_parser_class_name
        ../../src/gcc/cp/parser.c:21922
0x683987 cp_parser_qualifying_entity
        ../../src/gcc/cp/parser.c:6287
0x683987 cp_parser_nested_name_specifier_opt
        ../../src/gcc/cp/parser.c:5973
0x6705a2 cp_parser_constructor_declarator_p
        ../../src/gcc/cp/parser.c:25918
0x6705a2 cp_parser_decl_specifier_seq
        ../../src/gcc/cp/parser.c:13312
0x670975 cp_parser_single_declaration
        ../../src/gcc/cp/parser.c:26574
0x68c64c cp_parser_template_declaration_after_parameters
        ../../src/gcc/cp/parser.c:26268
0x68c3ab cp_parser_explicit_template_declaration
        ../../src/gcc/cp/parser.c:26503
0x68c3ab cp_parser_template_declaration_after_export
        ../../src/gcc/cp/parser.c:26522
0x670ff1 cp_parser_declaration
        ../../src/gcc/cp/parser.c:12442
0x69692b cp_parser_declaration_seq_opt
        ../../src/gcc/cp/parser.c:12369
0x696c12 cp_parser_translation_unit
        ../../src/gcc/cp/parser.c:4369
0x696c12 c_parse_file()
        ../../src/gcc/cp/parser.c:38357
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