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* [Bug c++/109975] New: error: '(((int*)(&<anonymous>.X::a)) != 0)' is not a constant expression
@ 2023-05-26 3:12 ed at catmur dot uk
2023-05-26 3:14 ` [Bug c++/109975] " pinskia at gcc dot gnu.org
0 siblings, 1 reply; 2+ messages in thread
From: ed at catmur dot uk @ 2023-05-26 3:12 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109975
Bug ID: 109975
Summary: error: '(((int*)(&<anonymous>.X::a)) != 0)' is not a
constant expression
Product: gcc
Version: 14.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: ed at catmur dot uk
Target Milestone: ---
struct X { int a[1]; };
constexpr bool b = (X{}.a != 0);
<source>:7:27: error: '(((int*)(&<anonymous>.X::a)) != 0)' is not a constant
expression
7 | constexpr bool b = (X{}.a != 0);
| ~~~~~~~^~~~~
AFAICT this does not fall foul of anything in [expr.const]. Other compilers
accept, with a tautological-compare warning in the case of clang.
Similar to bug 71962, but this happens without enabling sanitizer.
^ permalink raw reply [flat|nested] 2+ messages in thread
* [Bug c++/109975] error: '(((int*)(&<anonymous>.X::a)) != 0)' is not a constant expression
2023-05-26 3:12 [Bug c++/109975] New: error: '(((int*)(&<anonymous>.X::a)) != 0)' is not a constant expression ed at catmur dot uk
@ 2023-05-26 3:14 ` pinskia at gcc dot gnu.org
0 siblings, 0 replies; 2+ messages in thread
From: pinskia at gcc dot gnu.org @ 2023-05-26 3:14 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109975
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Resolution|--- |DUPLICATE
Status|UNCONFIRMED |RESOLVED
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Dup of bug 85944.
*** This bug has been marked as a duplicate of bug 85944 ***
^ permalink raw reply [flat|nested] 2+ messages in thread
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2023-05-26 3:12 [Bug c++/109975] New: error: '(((int*)(&<anonymous>.X::a)) != 0)' is not a constant expression ed at catmur dot uk
2023-05-26 3:14 ` [Bug c++/109975] " pinskia at gcc dot gnu.org
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