https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99445
Bug ID: 99445
Summary: [11 Regression] ICE in
Product: gcc
Version: 11.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: other
Assignee: unassigned at gcc dot gnu.org
Reporter: doko at debian dot org
Target Milestone: ---
Created attachment 50322
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=50322&action=edit
preprocessed source, unreduced
seen with trunk 20210227, building the broker package.
$cat foo.ii
template <typename> class decay;
template <class> struct implicit_conversions;
template <class T>
using implicit_conversions_t = typename implicit_conversions<T>::type;
template <class> struct response_type;
template <class Ts, class... Xs>
using response_type_t = typename response_type<Ts, Xs...>::type;
template <class Handle, class... Ts>
response_type<typename Handle::signatures,
implicit_conversions_t<typename decay<Ts>::type>...>
response_type_t < typename Handle::signatures,
typename implicit_conversions<typename decay<Ts>::type>::type...
$ g++ -c -fchecking=2 --param=hash-table-verification-limit=1000 foo.ii
hash table checking failed: equal operator returns true for a pair of values
with a different hash value
foo.ii: In substitution of ‘template<class Ts, class ... Xs> using
response_type_t = typename response_type<Ts, Xs ...>::type [with Ts = typename
Handle::signatures; Xs = {typename implicit_conversions<typename
decay<Ts>::type>::type ...}]’:
foo.ii:12:66: required from here
foo.ii:7:7: internal compiler error: in hashtab_chk_error, at hash-table.c:137
7 | using response_type_t = typename response_type<Ts, Xs...>::type;
| ^~~~~~~~~~~~~~~
0x120e1f7 hashtab_chk_error()
../../src/gcc/hash-table.c:137
0x7863d0 hash_table<spec_hasher, false, xcallocator>::verify(spec_entry*
const&, unsigned int)
../../src/gcc/hash-table.h:1033
0x7863d0 hash_table<spec_hasher, false,
xcallocator>::find_with_hash(spec_entry* const&, unsigned int)
../../src/gcc/hash-table.h:918
0x14cdeff lookup_template_class_1
../../src/gcc/cp/pt.c:9871
0x14fe6fe lookup_template_class(tree_node*, tree_node*, tree_node*, tree_node*,
int, int)
../../src/gcc/cp/pt.c:10243
0x14fe6fe tsubst_aggr_type
../../src/gcc/cp/pt.c:13576
0x14e2f18 tsubst(tree_node*, tree_node*, int, tree_node*)
../../src/gcc/cp/pt.c:16037
0x15b98f7 tsubst_decl
../../src/gcc/cp/pt.c:14802
0x160ea6d instantiate_template_1
../../src/gcc/cp/pt.c:21118
0x160e884 instantiate_template(tree_node*, tree_node*, int)
../../src/gcc/cp/pt.c:21177
0x14e3a38 instantiate_alias_template
../../src/gcc/cp/pt.c:21215
0x14e3a38 tsubst(tree_node*, tree_node*, int, tree_node*)
../../src/gcc/cp/pt.c:15444
0x14cf10d lookup_template_class_1
../../src/gcc/cp/pt.c:9944
0x14cc186 lookup_template_class(tree_node*, tree_node*, tree_node*, tree_node*,
int, int)
../../src/gcc/cp/pt.c:10243
0x14cc186 finish_template_type(tree_node*, tree_node*, int)
../../src/gcc/cp/semantics.c:3498
0x13e7bd3 cp_parser_template_id
../../src/gcc/cp/parser.c:17437
0x13ef262 cp_parser_class_name
../../src/gcc/cp/parser.c:24664
0x13e240f cp_parser_qualifying_entity
../../src/gcc/cp/parser.c:6994
0x13e240f cp_parser_nested_name_specifier_opt
../../src/gcc/cp/parser.c:6676
0x13ded32 cp_parser_nested_name_specifier
../../src/gcc/cp/parser.c:6920
Please submit a full bug report,
with preprocessed source if appropriate.
