https://gcc.gnu.org/bugzilla/show_bug.cgi?id=121090
Bug ID: 121090
Summary: internal compiler error: error reporting routines
re-entered. diagnostic_context::finish() in 15.1 and
trunk only
Product: gcc
Version: 16.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: mario.rodriguezb1 at um dot es
Target Milestone: ---
ICE in:
Program
```
#include <vector>
#include <string>
class Rotter : public std::vector<int(*)(void...)>, public std::string {
public:
Rotter() {
emplace_back([] { return 42; });
}
};
```
Stack dump
```
internal compiler error: error reporting routines re-entered.
0x2879b8e diagnostic_context::report_diagnostic(diagnostic_info*)
???:0
0x2879ca5 diagnostic_context::diagnostic_impl(rich_location*,
diagnostic_metadata const*, diagnostic_option_id, char const*, __va_list_tag
(*) [1], diagnostic_t)
???:0
0x289b986 internal_error(char const*, ...)
???:0
0xaf3494 fancy_abort(char const*, int, char const*)
???:0
0x28790bb diagnostic_context::finish()
???:0
0x2879407 diagnostic_context::action_after_output(diagnostic_t)
???:0
0x2879a77 diagnostic_context::report_diagnostic(diagnostic_info*)
???:0
0x2879ca5 diagnostic_context::diagnostic_impl(rich_location*,
diagnostic_metadata const*, diagnostic_option_id, char const*, __va_list_tag
(*) [1], diagnostic_t)
???:0
0x289b986 internal_error(char const*, ...)
???:0
0xaf3494 fancy_abort(char const*, int, char const*)
???:0
0xbb6612 cxx_pretty_printer::direct_abstract_declarator(tree_node*)
???:0
0xbb55c0 cxx_pretty_printer::type_id(tree_node*)
???:0
0xbb765e pp_cxx_parameter_mapping(cxx_pretty_printer*, tree_node*)
???:0
0xc172b3 maybe_print_single_constraint_context(diagnostic_text_output_format&,
tree_node*)
???:0
0x2899038 diagnostic_text_output_format::on_report_diagnostic(diagnostic_info
const&, diagnostic_t)
???:0
0x28797f6 diagnostic_context::report_diagnostic(diagnostic_info*)
???:0
0x2879ca5 diagnostic_context::diagnostic_impl(rich_location*,
diagnostic_metadata const*, diagnostic_option_id, char const*, __va_list_tag
(*) [1], diagnostic_t)
???:0
0x2899e5f inform(unsigned long, char const*, ...)
???:0
0xb82bf8 diagnose_constraints(unsigned long, tree_node*, tree_node*)
???:0
0xd812e4 fn_type_unification(tree_node*, tree_node*, tree_node*, tree_node*
const*, unsigned int, tree_node*, unification_kind_t, int, conversion**, bool,
bool)
???:0
```
To quickly reproduce:
https://godbolt.org/z/bKKonjKEc
