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* [Bug sanitizer/71962] error: ‘((& x) != 0u)’ is not a constant expression
[not found] <bug-71962-4@http.gcc.gnu.org/bugzilla/>
@ 2020-03-30 21:54 ` herring at lanl dot gov
2022-12-31 21:44 ` pinskia at gcc dot gnu.org
` (2 subsequent siblings)
3 siblings, 0 replies; 4+ messages in thread
From: herring at lanl dot gov @ 2020-03-30 21:54 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71962
S. Davis Herring <herring at lanl dot gov> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |herring at lanl dot gov
--- Comment #9 from S. Davis Herring <herring at lanl dot gov> ---
Another very similar failure (let me know if you want a separate bug for it):
inline constexpr int x=0,y=0; // -std=c++17
static_assert(&x!=&y); // error: '((& x) != (& y))' is not a constant
expression
No failure without the 'inline'.
^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug sanitizer/71962] error: ‘((& x) != 0u)’ is not a constant expression
[not found] <bug-71962-4@http.gcc.gnu.org/bugzilla/>
2020-03-30 21:54 ` [Bug sanitizer/71962] error: ‘((& x) != 0u)’ is not a constant expression herring at lanl dot gov
@ 2022-12-31 21:44 ` pinskia at gcc dot gnu.org
2023-06-30 4:32 ` pinskia at gcc dot gnu.org
2024-03-25 15:40 ` barry.revzin at gmail dot com
3 siblings, 0 replies; 4+ messages in thread
From: pinskia at gcc dot gnu.org @ 2022-12-31 21:44 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71962
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |trippels at gcc dot gnu.org
--- Comment #10 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
*** Bug 67762 has been marked as a duplicate of this bug. ***
^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug sanitizer/71962] error: ‘((& x) != 0u)’ is not a constant expression
[not found] <bug-71962-4@http.gcc.gnu.org/bugzilla/>
2020-03-30 21:54 ` [Bug sanitizer/71962] error: ‘((& x) != 0u)’ is not a constant expression herring at lanl dot gov
2022-12-31 21:44 ` pinskia at gcc dot gnu.org
@ 2023-06-30 4:32 ` pinskia at gcc dot gnu.org
2024-03-25 15:40 ` barry.revzin at gmail dot com
3 siblings, 0 replies; 4+ messages in thread
From: pinskia at gcc dot gnu.org @ 2023-06-30 4:32 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71962
--- Comment #11 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
*** Bug 110493 has been marked as a duplicate of this bug. ***
^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug sanitizer/71962] error: ‘((& x) != 0u)’ is not a constant expression
[not found] <bug-71962-4@http.gcc.gnu.org/bugzilla/>
` (2 preceding siblings ...)
2023-06-30 4:32 ` pinskia at gcc dot gnu.org
@ 2024-03-25 15:40 ` barry.revzin at gmail dot com
3 siblings, 0 replies; 4+ messages in thread
From: barry.revzin at gmail dot com @ 2024-03-25 15:40 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71962
Barry Revzin <barry.revzin at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |barry.revzin at gmail dot com
--- Comment #12 from Barry Revzin <barry.revzin at gmail dot com> ---
Similar failure:
struct A {
void f();
};
int main() {
constexpr auto pmf = &A::f;
static_assert(pmf != nullptr); // error with UBSAN only
}
This surfaces from attempting to implement function_ref
(https://www.open-std.org/jtc1/sc22/wg21/docs/papers/2023/p0792r14.html) which
has a constructor that takes the callable as a non-type template parameter and
static_asserts that it's not a null pointer.
Which apparently doesn't work with UBSAN.
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2024-03-25 15:40 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
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[not found] <bug-71962-4@http.gcc.gnu.org/bugzilla/>
2020-03-30 21:54 ` [Bug sanitizer/71962] error: ‘((& x) != 0u)’ is not a constant expression herring at lanl dot gov
2022-12-31 21:44 ` pinskia at gcc dot gnu.org
2023-06-30 4:32 ` pinskia at gcc dot gnu.org
2024-03-25 15:40 ` barry.revzin at gmail dot com
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