https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108047
--- Comment #6 from Sergei Trofimovich <slyfox at gcc dot gnu.org> ---
Encountered very similar ICE, this time on toml library on this week's gcc-13
master. Reduced it down to the following:
// $ cat bug.cc
#include <string>
#include <vector>
void format_underline(std::vector<std::string>);
template <typename>
void parse_key_value_pair(void) { format_underline({""}); }
$ g++ -c bug.cc
...
bug.cc: In function 'void parse_key_value_pair()':
bug.cc:7:51: internal compiler error: unexpected expression
'(std::__cxx11::basic_string<char>)""' of kind implicit_conv_expr
7 | void parse_key_value_pair(void) { format_underline({""}); }
| ~~~~~~~~~~~~~~~~^~~~~~
0x1cbb294 diagnostic_impl(rich_location*, diagnostic_metadata const*, int, char
const*, __va_list_tag (*) [1], diagnostic_t)
???:0
0x1cbbee6 internal_error(char const*, ...)
???:0
0x79c770 cxx_eval_constant_expression(constexpr_ctx const*, tree_node*,
value_cat, bool*, bool*, tree_node**)
???:0
0x7a1572 cxx_eval_outermost_constant_expr(tree_node*, bool, bool, bool, bool,
tree_node*)
???:0
0x7a52e6 maybe_constant_init_1(tree_node*, tree_node*, bool, bool)
???:0
0x77a767 build_user_type_conversion_1(tree_node*, tree_node*, int, int)
???:0
