https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79549
Bug ID: 79549
Summary: ICE in tsubst, at cp/pt.c:13474 with partial
specialization of auto... template parameter pack
Product: gcc
Version: 7.0.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: rs2740 at gmail dot com
Target Milestone: ---
template <auto...>
struct meow;
template <auto C>
struct meow<C> { };
template struct meow<1>;
prog.cc: In substitution of 'template<auto C> struct meow<C> [with auto C =
1]':
prog.cc:7:17: required from here
prog.cc:7:17: internal compiler error: in tsubst, at cp/pt.c:13474
template struct meow<1>;
^~~~~~~
0x5d6a8c tsubst(tree_node*, tree_node*, int, tree_node*)
../../source/gcc/cp/pt.c:13474
0x5df37c tsubst_template_args
../../source/gcc/cp/pt.c:11638
0x5d5d5b tsubst(tree_node*, tree_node*, int, tree_node*)
../../source/gcc/cp/pt.c:13695
0x5d49f7 get_partial_spec_bindings
../../source/gcc/cp/pt.c:21511
0x5d4cbd most_specialized_partial_spec
../../source/gcc/cp/pt.c:21741
0x5ef83b instantiate_class_template_1
../../source/gcc/cp/pt.c:10183
0x5ef83b instantiate_class_template(tree_node*)
../../source/gcc/cp/pt.c:10751
0x652235 complete_type(tree_node*)
../../source/gcc/cp/typeck.c:133
0x5ead7b do_type_instantiation(tree_node*, tree_node*, int)
../../source/gcc/cp/pt.c:22011
0x64661f cp_parser_explicit_instantiation
../../source/gcc/cp/parser.c:16210
0x627581 cp_parser_declaration
../../source/gcc/cp/parser.c:12467
0x64d05b cp_parser_declaration_seq_opt
../../source/gcc/cp/parser.c:12391
0x64d342 cp_parser_translation_unit
../../source/gcc/cp/parser.c:4366
0x64d342 c_parse_file()
../../source/gcc/cp/parser.c:38425
0x71b2a3 c_common_parse_file()
../../source/gcc/c-family/c-opts.c:1107
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Please include the complete backtrace with any bug report.
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