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* [Bug c++/115546] New: [14.1.0 Regression] Section Type Conflict Error
@ 2024-06-18 23:06 nikhilg1 at uci dot edu
2024-06-18 23:11 ` [Bug c++/115546] " pinskia at gcc dot gnu.org
` (3 more replies)
0 siblings, 4 replies; 5+ messages in thread
From: nikhilg1 at uci dot edu @ 2024-06-18 23:06 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115546
Bug ID: 115546
Summary: [14.1.0 Regression] Section Type Conflict Error
Product: gcc
Version: 14.1.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: nikhilg1 at uci dot edu
Target Milestone: ---
Consider the following reduced test case:
$>cat test.cpp
template <class T>
int v2 __attribute__((section("A"))) = sizeof(T);
template <>
int v2<double> __attribute__((section("A"))) = 50;
void a(int*& x) {
x = &v2<int>;
}
$>g++-13 -c test.cpp && echo OK
OK
$>g++-14 -c test.cpp && echo OK
test.cpp:2:5: error: 'v2<int>' causes a section type conflict with 'v2<double>'
2 | int v2 __attribute__((section("A"))) = sizeof(T);
| ^~
test.cpp:5:5: note: 'v2<double>' was declared here
5 | int v2<double> __attribute__((section("A"))) = 50;
| ^~~~~~~~~~
$>clang++-17 -c test.cpp && echo OK
OK
I am looking through the docs on the section attribute
(https://gcc.gnu.org/onlinedocs/gcc-14.1.0/gcc/Common-Variable-Attributes.html)
but am not able to see any reason why this case has started to fail. I also
don't see any other compiler failing for this case.
Issue is occurring since g++ 14.1.0 and seems to be reproducible on trunk as
well.
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug c++/115546] [14.1.0 Regression] Section Type Conflict Error
2024-06-18 23:06 [Bug c++/115546] New: [14.1.0 Regression] Section Type Conflict Error nikhilg1 at uci dot edu
@ 2024-06-18 23:11 ` pinskia at gcc dot gnu.org
2024-06-18 23:13 ` pinskia at gcc dot gnu.org
` (2 subsequent siblings)
3 siblings, 0 replies; 5+ messages in thread
From: pinskia at gcc dot gnu.org @ 2024-06-18 23:11 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115546
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
the section attribute was ignored before GCC 14.
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug c++/115546] [14.1.0 Regression] Section Type Conflict Error
2024-06-18 23:06 [Bug c++/115546] New: [14.1.0 Regression] Section Type Conflict Error nikhilg1 at uci dot edu
2024-06-18 23:11 ` [Bug c++/115546] " pinskia at gcc dot gnu.org
@ 2024-06-18 23:13 ` pinskia at gcc dot gnu.org
2024-06-18 23:15 ` pinskia at gcc dot gnu.org
2024-06-18 23:17 ` pinskia at gcc dot gnu.org
3 siblings, 0 replies; 5+ messages in thread
From: pinskia at gcc dot gnu.org @ 2024-06-18 23:13 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115546
--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
But starting with GCC 14, they are not ignored.
In this case you have one variable that is in a comdat section named "A" and
another one which is in a regular section named "A" which conflict.
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug c++/115546] [14.1.0 Regression] Section Type Conflict Error
2024-06-18 23:06 [Bug c++/115546] New: [14.1.0 Regression] Section Type Conflict Error nikhilg1 at uci dot edu
2024-06-18 23:11 ` [Bug c++/115546] " pinskia at gcc dot gnu.org
2024-06-18 23:13 ` pinskia at gcc dot gnu.org
@ 2024-06-18 23:15 ` pinskia at gcc dot gnu.org
2024-06-18 23:17 ` pinskia at gcc dot gnu.org
3 siblings, 0 replies; 5+ messages in thread
From: pinskia at gcc dot gnu.org @ 2024-06-18 23:15 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115546
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
See Also| |https://gcc.gnu.org/bugzill
| |a/show_bug.cgi?id=87178
--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
The reason why this is invalid is for the same reason why PR 87178 is invalid.
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug c++/115546] [14.1.0 Regression] Section Type Conflict Error
2024-06-18 23:06 [Bug c++/115546] New: [14.1.0 Regression] Section Type Conflict Error nikhilg1 at uci dot edu
` (2 preceding siblings ...)
2024-06-18 23:15 ` pinskia at gcc dot gnu.org
@ 2024-06-18 23:17 ` pinskia at gcc dot gnu.org
3 siblings, 0 replies; 5+ messages in thread
From: pinskia at gcc dot gnu.org @ 2024-06-18 23:17 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115546
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |DUPLICATE
--- Comment #4 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
See PR 87178 on why this is invalid.
*** This bug has been marked as a duplicate of bug 87178 ***
^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2024-06-18 23:17 UTC | newest]
Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed)
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2024-06-18 23:06 [Bug c++/115546] New: [14.1.0 Regression] Section Type Conflict Error nikhilg1 at uci dot edu
2024-06-18 23:11 ` [Bug c++/115546] " pinskia at gcc dot gnu.org
2024-06-18 23:13 ` pinskia at gcc dot gnu.org
2024-06-18 23:15 ` pinskia at gcc dot gnu.org
2024-06-18 23:17 ` pinskia at gcc dot gnu.org
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