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* [Bug c++/102213] New: Incorrect executable produced from valid input code with virtual consteval
@ 2021-09-06 8:51 fchelnokov at gmail dot com
2021-11-25 18:51 ` [Bug c++/102213] " pinskia at gcc dot gnu.org
` (2 more replies)
0 siblings, 3 replies; 4+ messages in thread
From: fchelnokov at gmail dot com @ 2021-09-06 8:51 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102213
Bug ID: 102213
Summary: Incorrect executable produced from valid input code
with virtual consteval
Product: gcc
Version: 12.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: fchelnokov at gmail dot com
Target Milestone: ---
Consider the program
```
#include <compare>
struct A {
virtual consteval std::strong_ordering operator <=>(const A &) const =
default;
};
struct B : A {
virtual consteval bool operator==(const A&) const noexcept override {
return false; }
};
int main() {
static constexpr B b;
static constexpr const A & a = b;
static_assert( (a <=> a) == 0 );
static_assert( a != a );
return (a <=> a) == 0;
}
```
It shall return 1, but after making in GCC it fails with return code 139:
https://gcc.godbolt.org/z/EjdWa61W9
^ permalink raw reply [flat|nested] 4+ messages in thread* [Bug c++/102213] Incorrect executable produced from valid input code with virtual consteval 2021-09-06 8:51 [Bug c++/102213] New: Incorrect executable produced from valid input code with virtual consteval fchelnokov at gmail dot com @ 2021-11-25 18:51 ` pinskia at gcc dot gnu.org 2021-11-25 18:52 ` pinskia at gcc dot gnu.org 2023-01-19 2:07 ` [Bug c++/102213] virtual consteval is not being stored in the vtable pinskia at gcc dot gnu.org 2 siblings, 0 replies; 4+ messages in thread From: pinskia at gcc dot gnu.org @ 2021-11-25 18:51 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102213 Andrew Pinski <pinskia at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Ever confirmed|0 |1 Known to fail| |11.1.0, 11.2.0 Status|UNCONFIRMED |NEW Last reconfirmed| |2021-11-25 --- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> --- Confirmed, at -O1 it is constant evulated in the front-end and it works. ^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug c++/102213] Incorrect executable produced from valid input code with virtual consteval 2021-09-06 8:51 [Bug c++/102213] New: Incorrect executable produced from valid input code with virtual consteval fchelnokov at gmail dot com 2021-11-25 18:51 ` [Bug c++/102213] " pinskia at gcc dot gnu.org @ 2021-11-25 18:52 ` pinskia at gcc dot gnu.org 2023-01-19 2:07 ` [Bug c++/102213] virtual consteval is not being stored in the vtable pinskia at gcc dot gnu.org 2 siblings, 0 replies; 4+ messages in thread From: pinskia at gcc dot gnu.org @ 2021-11-25 18:52 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102213 --- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> --- Note GCC 10 did a sorry message: sorry, unimplemented: 'virtual' 'consteval' ^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug c++/102213] virtual consteval is not being stored in the vtable 2021-09-06 8:51 [Bug c++/102213] New: Incorrect executable produced from valid input code with virtual consteval fchelnokov at gmail dot com 2021-11-25 18:51 ` [Bug c++/102213] " pinskia at gcc dot gnu.org 2021-11-25 18:52 ` pinskia at gcc dot gnu.org @ 2023-01-19 2:07 ` pinskia at gcc dot gnu.org 2 siblings, 0 replies; 4+ messages in thread From: pinskia at gcc dot gnu.org @ 2023-01-19 2:07 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102213 Andrew Pinski <pinskia at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Summary|Incorrect executable |virtual consteval is not |produced from valid input |being stored in the vtable |code with virtual consteval | --- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> --- Reduced further to show the issue is not related to operator <=> or operator ==: ``` struct A { virtual consteval bool f(const A &) const { return true; }; }; struct B : A { virtual consteval bool f(const A&) const noexcept override { return false; } }; int main() { static constexpr B b; static constexpr const A & a = b; static_assert (a.f(a) == 0); if (a.f(a) != 0) __builtin_abort(); return 0; } ``` ^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2023-01-19 2:07 UTC | newest] Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2021-09-06 8:51 [Bug c++/102213] New: Incorrect executable produced from valid input code with virtual consteval fchelnokov at gmail dot com 2021-11-25 18:51 ` [Bug c++/102213] " pinskia at gcc dot gnu.org 2021-11-25 18:52 ` pinskia at gcc dot gnu.org 2023-01-19 2:07 ` [Bug c++/102213] virtual consteval is not being stored in the vtable pinskia at gcc dot gnu.org
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