https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99484
--- Comment #1 from Alexander Lelyakin <alexander.lelyakin at googlemail dot
com> ---
In current version 20210310 I have seen another, but very similar error
message:
g++ -std=c++20 -fmodules-ts -x c++-system-header memory_resource
g++ -std=c++20 -fmodules-ts -x c++-system-header thread
g++ -std=c++20 -fmodules-ts -x c++-system-header version
g++ -std=c++20 -fmodules-ts -x c++-system-header array
g++ -std=c++20 -fmodules-ts -x c++-system-header latch
g++ -std=c++20 -fmodules-ts -x c++-system-header syncstream
g++ -std=c++20 -fmodules-ts -x c++-system-header cstddef
g++ -std=c++20 -fmodules-ts -x c++-system-header type_traits
g++ -std=c++20 -fmodules-ts -x c++-system-header list
g++ -std=c++20 -fmodules-ts -x c++-system-header unordered_map
----
In module /usr/local/include/c++/11.0.1/type_traits, imported at
/usr/local/include/c++/11.0.1/unordered_map:38:
/usr/local/include/c++/11.0.1/type_traits: In instantiation of ‘struct
std::is_copy_assignable<bool>’:
/usr/local/include/c++/11.0.1/type_traits:138:12: required from ‘struct
std::__and_<std::is_copy_assignable<bool>, std::is_copy_assignable<long
unsigned int> >’
/usr/local/include/c++/11.0.1/bits/stl_pair.h:390:7: required from ‘struct
std::pair<bool, long unsigned int>’
/usr/local/include/c++/11.0.1/bits/hashtable_policy.h:577:5: required from
here
/usr/local/include/c++/11.0.1/type_traits:1057:12: internal compiler error:
same canonical type node for different types ‘void’ and ‘std::__void_t<_Tp&>’
1057 | struct is_copy_assignable
| ^~~~~~~~~~~~~~~~~~
0xb7f8dd comptypes(tree_node*, tree_node*, int)
../../gcc/gcc/cp/typeck.c:1554
0xae4bff template_args_equal(tree_node*, tree_node*, bool)
../../gcc/gcc/cp/pt.c:9207
0xae4758 template_args_equal(tree_node*, tree_node*, bool)
../../gcc/gcc/cp/pt.c:9170
0xae4758 comp_template_args(tree_node*, tree_node*, tree_node**, tree_node**,
bool)
../../gcc/gcc/cp/pt.c:9254
0xae4758 comp_template_args(tree_node*, tree_node*, tree_node**, tree_node**,
bool)
../../gcc/gcc/cp/pt.c:9234
0xaee073 spec_hasher::equal(spec_entry*, spec_entry*)
../../gcc/gcc/cp/pt.c:1725
0xb3400e hash_table<spec_hasher, false,
xcallocator>::find_slot_with_hash(spec_entry* const&, unsigned int,
insert_option)
../../gcc/gcc/hash-table.h:981
0xaf101b add_mergeable_specialization(bool, spec_entry*, tree_node*, unsigned
int)
../../gcc/gcc/cp/pt.c:30018
0xa6ef5f trees_in::decl_value()
../../gcc/gcc/cp/module.cc:8068
0xa67017 trees_in::tree_node(bool)
../../gcc/gcc/cp/module.cc:9174
0xa6d66b module_state::read_cluster(unsigned int)
../../gcc/gcc/cp/module.cc:14858
0xa6db6d module_state::load_section(unsigned int, binding_slot*)
../../gcc/gcc/cp/module.cc:18129
0xa6dc2f module_state::lazy_load(unsigned int, binding_slot*)
../../gcc/gcc/cp/module.cc:18783
0xa70e67 lazy_load_pendings(tree_node*)
../../gcc/gcc/cp/module.cc:18876
0xb2045f lookup_template_class_1
../../gcc/gcc/cp/pt.c:9799
0xb227f6 lookup_template_class(tree_node*, tree_node*, tree_node*, tree_node*,
int, int)
../../gcc/gcc/cp/pt.c:10237
0xb227f6 tsubst_aggr_type
../../gcc/gcc/cp/pt.c:13572
0xaf87ad tsubst_qualified_id
../../gcc/gcc/cp/pt.c:16365
0xafab79 tsubst_copy_and_build(tree_node*, tree_node*, int, tree_node*, bool,
bool)
../../gcc/gcc/cp/pt.c:19865
0xb04508 tsubst_expr(tree_node*, tree_node*, int, tree_node*, bool)
../../gcc/gcc/cp/pt.c:19115
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
----
g++ (GCC) 11.0.1 20210310 (experimental)
Copyright (C) 2021 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
