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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]
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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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