https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105044
--- Comment #3 from Johel Ernesto Guerrero Peña <johelegp at gmail dot com> ---
Enough recompilations from the actual use-case show this error:
```
/home/johel/Documents/C++/Repos/Waarudo/tests/unit/test.waarudo.quantities.cpp:
In substitution of ‘template<auto ...D> struct
waarudo::is_unit@waarudo.quantities<const waarudo::unit@waarudo.quantities<D
...>*> [with auto ...D = {waarudo::ratio@waarudo.quantities{146097, 400}, (&
waarudo::day@waarudo.quantities)}]’:
/home/johel/Documents/C++/Repos/Waarudo/tests/unit/test.waarudo.quantities.cpp:21:57:
required from here
/home/johel/Documents/C++/Repos/Waarudo/tests/unit/test.waarudo.quantities.cpp:21:57:
internal compiler error: tree check: expected tree that contains ‘typed’
structure, have ‘ggc_freed’ in convert_nontype_argument, at cp/pt.cc:7763
21 | static_assert(waarudo::is_unit<decltype(&waarudo::year)>::value);
| ^~
0x226d11c internal_error(char const*, ...)
???:0
0x8d094f tree_contains_struct_check_failed(tree_node const*,
tree_node_structure_enum, char const*, int, char const*)
???:0
0xbc4daa lookup_template_class(tree_node*, tree_node*, tree_node*, tree_node*,
int, int)
???:0
0xbafdb7 tsubst(tree_node*, tree_node*, int, tree_node*)
???:0
0xbbf9eb tsubst_template_args(tree_node*, tree_node*, int, tree_node*)
???:0
0xbae4e6 most_specialized_partial_spec(tree_node*, int)
???:0
0xbd7a1c instantiate_class_template(tree_node*)
???:0
0xc2fe01 complete_type(tree_node*)
???:0
0xb7a0db c_parse_file()
???:0
0xcb9cd1 c_common_parse_file()
???:0
Please submit a full bug report, with preprocessed source (by using
-freport-bug).
Please include the complete backtrace with any bug report.
See <https://bugs.archlinux.org/> for instructions.
```
