public inbox for gcc-bugs@sourceware.org
help / color / mirror / Atom feed
* [Bug c++/114525] New: Incorrect code generated when setting a value through a pointer-to-member on a ternary returning an object reference
@ 2024-03-28 20:08 dragonroot at gmail dot com
2024-03-28 20:17 ` [Bug c++/114525] " pinskia at gcc dot gnu.org
` (2 more replies)
0 siblings, 3 replies; 4+ messages in thread
From: dragonroot at gmail dot com @ 2024-03-28 20:08 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114525
Bug ID: 114525
Summary: Incorrect code generated when setting a value through
a pointer-to-member on a ternary returning an object
reference
Product: gcc
Version: 14.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: dragonroot at gmail dot com
Target Milestone: ---
The following program incorrectly outputs 1 on every GCC I've tried (via
godbolt.org), while every clang version there correctly outputs 2.
==============
#include <stdio.h>
struct Foo
{
int x;
};
Foo & get( Foo & v )
{
return v;
}
int main()
{
Foo v;
v.x = 1;
bool cond = true;
( cond ? get( v ) : get( v ) ).*( &Foo::x ) = 2;
// Should output 2, but outputs 1
printf( "%d\n", v.x );
}
==============
^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug c++/114525] Incorrect code generated when setting a value through a pointer-to-member on a ternary returning an object reference
2024-03-28 20:08 [Bug c++/114525] New: Incorrect code generated when setting a value through a pointer-to-member on a ternary returning an object reference dragonroot at gmail dot com
@ 2024-03-28 20:17 ` pinskia at gcc dot gnu.org
2024-03-28 20:22 ` [Bug c++/114525] [11/12/13/14 Regression] " pinskia at gcc dot gnu.org
2024-04-02 8:35 ` rguenth at gcc dot gnu.org
2 siblings, 0 replies; 4+ messages in thread
From: pinskia at gcc dot gnu.org @ 2024-03-28 20:17 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114525
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Ever confirmed|0 |1
Last reconfirmed| |2024-03-28
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Confirmed.
(void) (*((int *) &(cond ? *get ((struct Foo &) &v) : *get ((struct Foo &)
&v)) + (sizetype) 0) = 2) >>>>>;
Notice the * there.
^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug c++/114525] [11/12/13/14 Regression] Incorrect code generated when setting a value through a pointer-to-member on a ternary returning an object reference
2024-03-28 20:08 [Bug c++/114525] New: Incorrect code generated when setting a value through a pointer-to-member on a ternary returning an object reference dragonroot at gmail dot com
2024-03-28 20:17 ` [Bug c++/114525] " pinskia at gcc dot gnu.org
@ 2024-03-28 20:22 ` pinskia at gcc dot gnu.org
2024-04-02 8:35 ` rguenth at gcc dot gnu.org
2 siblings, 0 replies; 4+ messages in thread
From: pinskia at gcc dot gnu.org @ 2024-03-28 20:22 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114525
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Known to fail| |4.4.7
Target Milestone|--- |11.5
Summary|Incorrect code generated |[11/12/13/14 Regression]
|when setting a value |Incorrect code generated
|through a pointer-to-member |when setting a value
|on a ternary returning an |through a pointer-to-member
|object reference |on a ternary returning an
| |object reference
Known to work| |4.1.2
--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
It actually worked in GCC 4.1.2.
^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug c++/114525] [11/12/13/14 Regression] Incorrect code generated when setting a value through a pointer-to-member on a ternary returning an object reference
2024-03-28 20:08 [Bug c++/114525] New: Incorrect code generated when setting a value through a pointer-to-member on a ternary returning an object reference dragonroot at gmail dot com
2024-03-28 20:17 ` [Bug c++/114525] " pinskia at gcc dot gnu.org
2024-03-28 20:22 ` [Bug c++/114525] [11/12/13/14 Regression] " pinskia at gcc dot gnu.org
@ 2024-04-02 8:35 ` rguenth at gcc dot gnu.org
2 siblings, 0 replies; 4+ messages in thread
From: rguenth at gcc dot gnu.org @ 2024-04-02 8:35 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114525
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P2
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2024-04-02 8:35 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2024-03-28 20:08 [Bug c++/114525] New: Incorrect code generated when setting a value through a pointer-to-member on a ternary returning an object reference dragonroot at gmail dot com
2024-03-28 20:17 ` [Bug c++/114525] " pinskia at gcc dot gnu.org
2024-03-28 20:22 ` [Bug c++/114525] [11/12/13/14 Regression] " pinskia at gcc dot gnu.org
2024-04-02 8:35 ` rguenth at gcc dot gnu.org
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).