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* [Bug c++/101704] New: "Already defined" error in case of many concept conversion operators @ 2021-07-31 8:42 fchelnokov at gmail dot com 2021-07-31 19:43 ` [Bug c++/101704] " pinskia at gcc dot gnu.org ` (3 more replies) 0 siblings, 4 replies; 5+ messages in thread From: fchelnokov at gmail dot com @ 2021-07-31 8:42 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101704 Bug ID: 101704 Summary: "Already defined" error in case of many concept conversion operators Product: gcc Version: 11.1.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c++ Assignee: unassigned at gcc dot gnu.org Reporter: fchelnokov at gmail dot com Target Milestone: --- Example code: ``` template <auto =[]{}> class C; template <typename, typename = C<>> concept x = true; #include <iostream> struct S { operator x<C<>> auto() { return 42; } operator x<C<>> auto() { return '+'; } operator x<C<>> auto() { return 44LL; } operator x<C<>> auto() { return 45.5; } operator x<C<>> auto() { return 46.5f; } operator x<C<>> auto() { return 47L; } operator x<C<>> auto() { return 48ULL; } operator x<C<>> auto() { return 49U; } }; int main() { S s; std::cout << (int)s << "\n"; std::cout << (char)s << "\n"; std::cout << (long long)s << "\n"; std::cout << (double)s << "\n"; std::cout << (float)s << "\n"; std::cout << (long)s << "\n"; std::cout << (unsigned long long)s << "\n"; std::cout << (unsigned)s << "\n"; } ``` GCC 11 prints: ``` /tmp/ccfcrhcg.s: Assembler messages: /tmp/ccfcrhcg.s:33: Error: symbol `_ZN1ScvDaEv' is already defined /tmp/ccfcrhcg.s:55: Error: symbol `_ZN1ScvDaEv' is already defined /tmp/ccfcrhcg.s:77: Error: symbol `_ZN1ScvDaEv' is already defined /tmp/ccfcrhcg.s:101: Error: symbol `_ZN1ScvDaEv' is already defined /tmp/ccfcrhcg.s:123: Error: symbol `_ZN1ScvDaEv' is already defined /tmp/ccfcrhcg.s:145: Error: symbol `_ZN1ScvDaEv' is already defined /tmp/ccfcrhcg.s:167: Error: symbol `_ZN1ScvDaEv' is already defined Execution build compiler returned: 1 ``` GCC (truck) crashes on this example: ``` <source>:29:1: internal compiler error: symtab_node::verify failed 0x1dabd49 internal_error(char const*, ...) ???:0 0xb68322 symtab_node::verify_symtab_nodes() ???:0 0xb844cf symbol_table::finalize_compilation_unit() ???:0 ``` https://gcc.godbolt.org/z/KP8Wqhz96 ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug c++/101704] "Already defined" error in case of many concept conversion operators 2021-07-31 8:42 [Bug c++/101704] New: "Already defined" error in case of many concept conversion operators fchelnokov at gmail dot com @ 2021-07-31 19:43 ` pinskia at gcc dot gnu.org 2021-08-02 8:31 ` rguenth at gcc dot gnu.org ` (2 subsequent siblings) 3 siblings, 0 replies; 5+ messages in thread From: pinskia at gcc dot gnu.org @ 2021-07-31 19:43 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101704 Andrew Pinski <pinskia at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Ever confirmed|0 |1 Keywords| |assemble-failure, | |ice-on-valid-code See Also| |https://gcc.gnu.org/bugzill | |a/show_bug.cgi?id=98163 Status|UNCONFIRMED |NEW Last reconfirmed| |2021-07-31 --- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> --- Note 11 will also ICE the same way as the trunk if you either configure with checking turned on or if you use -fchecking . Might be related to PR 98163. ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug c++/101704] "Already defined" error in case of many concept conversion operators 2021-07-31 8:42 [Bug c++/101704] New: "Already defined" error in case of many concept conversion operators fchelnokov at gmail dot com 2021-07-31 19:43 ` [Bug c++/101704] " pinskia at gcc dot gnu.org @ 2021-08-02 8:31 ` rguenth at gcc dot gnu.org 2021-08-02 9:00 ` redi at gcc dot gnu.org 2024-04-13 20:50 ` pinskia at gcc dot gnu.org 3 siblings, 0 replies; 5+ messages in thread From: rguenth at gcc dot gnu.org @ 2021-08-02 8:31 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101704 Richard Biener <rguenth at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Keywords| |wrong-code --- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> --- It must be also wrongly mangled I guess. ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug c++/101704] "Already defined" error in case of many concept conversion operators 2021-07-31 8:42 [Bug c++/101704] New: "Already defined" error in case of many concept conversion operators fchelnokov at gmail dot com 2021-07-31 19:43 ` [Bug c++/101704] " pinskia at gcc dot gnu.org 2021-08-02 8:31 ` rguenth at gcc dot gnu.org @ 2021-08-02 9:00 ` redi at gcc dot gnu.org 2024-04-13 20:50 ` pinskia at gcc dot gnu.org 3 siblings, 0 replies; 5+ messages in thread From: redi at gcc dot gnu.org @ 2021-08-02 9:00 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101704 --- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> --- Clang and ICC both mangle it the same way, but they only emit one definition of it. I have no idea what the correct assembly is meant to be for this. ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug c++/101704] "Already defined" error in case of many concept conversion operators 2021-07-31 8:42 [Bug c++/101704] New: "Already defined" error in case of many concept conversion operators fchelnokov at gmail dot com ` (2 preceding siblings ...) 2021-08-02 9:00 ` redi at gcc dot gnu.org @ 2024-04-13 20:50 ` pinskia at gcc dot gnu.org 3 siblings, 0 replies; 5+ messages in thread From: pinskia at gcc dot gnu.org @ 2024-04-13 20:50 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101704 --- Comment #4 from Andrew Pinski <pinskia at gcc dot gnu.org> --- I should note that clang 18+ (runtime) output is different from before and looks correct. ^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2024-04-13 20:50 UTC | newest] Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2021-07-31 8:42 [Bug c++/101704] New: "Already defined" error in case of many concept conversion operators fchelnokov at gmail dot com 2021-07-31 19:43 ` [Bug c++/101704] " pinskia at gcc dot gnu.org 2021-08-02 8:31 ` rguenth at gcc dot gnu.org 2021-08-02 9:00 ` redi at gcc dot gnu.org 2024-04-13 20:50 ` pinskia at gcc dot gnu.org
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