https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118180
Bug ID: 118180
Summary: internal compiler error: tree check: expected
tree_vec, have identifier_node in tsubst_decl, at
cp/pt.cc:15617
Product: gcc
Version: 13.2.0
Status: UNCONFIRMED
Keywords: ice-on-invalid-code
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: rush102333 at gmail dot com
Target Milestone: ---
Simplified test:
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
struct c {
template <typename=int>
struct b{};
int b1;
};
template<class... Ts>
struct d{
using typename Ts::b::type...;
};
template struct d<c>;
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Compiler Output:
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
<source>: In instantiation of 'struct d<c>':
<source>:12:17: required from here
12 | template struct d<c>;
| ^~~~
<source>:9:29: error: 'typename c::b' names 'template<class> struct c::b',
which is not a type
9 | using typename Ts::b::type...;
| ^~~
<source>:9:29: internal compiler error: tree check: expected tree_vec, have
identifier_node in tsubst_decl, at cp/pt.cc:15617
0x2938075 diagnostic_context::diagnostic_impl(rich_location*,
diagnostic_metadata const*, diagnostic_option_id, char const*, __va_list_tag
(*) [1], diagnostic_t)
???:0
0x294ee76 internal_error(char const*, ...)
???:0
0x9d5db0 tree_check_failed(tree_node const*, char const*, int, char const*,
...)
???:0
0xd479e1 instantiate_class_template(tree_node*)
???:0
0xd3c2e5 do_type_instantiation(tree_node*, tree_node*, int)
???:0
0xce5603 c_parse_file()
???:0
0xe450d9 c_common_parse_file()
???:0
Please submit a full bug report, with preprocessed source.
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Please note that this currently seems to only happen on the trunk.
https://godbolt.org/z/MThef5Wfe
