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* [Bug c++/99571] New: ICE for NTTP with pointer to array of union
@ 2021-03-13 4:17 johelegp at gmail dot com
2021-03-15 17:33 ` [Bug c++/99571] " mpolacek at gcc dot gnu.org
` (2 more replies)
0 siblings, 3 replies; 4+ messages in thread
From: johelegp at gmail dot com @ 2021-03-13 4:17 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99571
Bug ID: 99571
Summary: ICE for NTTP with pointer to array of union
Product: gcc
Version: 11.0
URL: https://godbolt.org/z/rsc6fs
Status: UNCONFIRMED
Keywords: ice-on-valid-code
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: johelegp at gmail dot com
CC: johelegp at gmail dot com
Target Milestone: ---
See https://godbolt.org/z/rsc6fs.
```C++
struct I{
union { int a[1]{}; };
int*i=a;
};
constexpr I i;
template<auto>struct C{};
[[maybe_unused]]C<i>c;
```
^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug c++/99571] ICE for NTTP with pointer to array of union
2021-03-13 4:17 [Bug c++/99571] New: ICE for NTTP with pointer to array of union johelegp at gmail dot com
@ 2021-03-15 17:33 ` mpolacek at gcc dot gnu.org
2022-01-19 3:03 ` [Bug c++/99571] ICE for NTTP with pointer to a field inside anonymous union/struct pinskia at gcc dot gnu.org
2022-01-19 13:01 ` johelegp at gmail dot com
2 siblings, 0 replies; 4+ messages in thread
From: mpolacek at gcc dot gnu.org @ 2021-03-15 17:33 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99571
Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |mpolacek at gcc dot gnu.org
Ever confirmed|0 |1
Last reconfirmed| |2021-03-15
Status|UNCONFIRMED |NEW
--- Comment #1 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Confirmed. ICE started with r11-2237. Before that:
error: ‘& i.I::<anonymous>.I::<unnamed union>::a’ is not a valid template
argument of type ‘int*’ because ‘i.I::<anonymous>.I::<unnamed union>::a’ is not
a variable
7 | [[maybe_unused]]C<i>c;
| ^
Not sure if we should treat this as a regression.
^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug c++/99571] ICE for NTTP with pointer to a field inside anonymous union/struct
2021-03-13 4:17 [Bug c++/99571] New: ICE for NTTP with pointer to array of union johelegp at gmail dot com
2021-03-15 17:33 ` [Bug c++/99571] " mpolacek at gcc dot gnu.org
@ 2022-01-19 3:03 ` pinskia at gcc dot gnu.org
2022-01-19 13:01 ` johelegp at gmail dot com
2 siblings, 0 replies; 4+ messages in thread
From: pinskia at gcc dot gnu.org @ 2022-01-19 3:03 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99571
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
URL|https://godbolt.org/z/rsc6f |
|s |
Summary|ICE for NTTP with pointer |ICE for NTTP with pointer
|to array of union |to a field inside anonymous
| |union/struct
--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
https://godbolt.org/z/rsc6fs
Here is another testcase which shows a similar issue:
struct I{
union { int a{}; };
int *i;
constexpr I():i(&a){}
};
constexpr I i;
template<I>struct C{};
[[maybe_unused]]C<i>c;
---- CUT ----
Note clang has a bogus warning for the above about the anonymous union (I am
not going to file a bug about it though).
^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug c++/99571] ICE for NTTP with pointer to a field inside anonymous union/struct
2021-03-13 4:17 [Bug c++/99571] New: ICE for NTTP with pointer to array of union johelegp at gmail dot com
2021-03-15 17:33 ` [Bug c++/99571] " mpolacek at gcc dot gnu.org
2022-01-19 3:03 ` [Bug c++/99571] ICE for NTTP with pointer to a field inside anonymous union/struct pinskia at gcc dot gnu.org
@ 2022-01-19 13:01 ` johelegp at gmail dot com
2 siblings, 0 replies; 4+ messages in thread
From: johelegp at gmail dot com @ 2022-01-19 13:01 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99571
--- Comment #3 from Johel Ernesto Guerrero Peña <johelegp at gmail dot com> ---
> Here is another testcase which shows a similar issue:
Here's its link: https://godbolt.org/z/fMbYMMYKz. You posted the Comment 0's.
> Note clang has a bogus warning for the above about the anonymous union (I am not going to file a bug about it though).
Opened https://github.com/llvm/llvm-project/issues/53296 for that.
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2022-01-19 13:01 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2021-03-13 4:17 [Bug c++/99571] New: ICE for NTTP with pointer to array of union johelegp at gmail dot com
2021-03-15 17:33 ` [Bug c++/99571] " mpolacek at gcc dot gnu.org
2022-01-19 3:03 ` [Bug c++/99571] ICE for NTTP with pointer to a field inside anonymous union/struct pinskia at gcc dot gnu.org
2022-01-19 13:01 ` johelegp at gmail dot com
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