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* [Bug c++/104661] New: Catching exception by const value when exception-object has lvalue-reference constructor
@ 2022-02-23 12:40 fchelnokov at gmail dot com
2022-02-23 23:14 ` [Bug c++/104661] [C++17+] " pinskia at gcc dot gnu.org
` (2 more replies)
0 siblings, 3 replies; 4+ messages in thread
From: fchelnokov at gmail dot com @ 2022-02-23 12:40 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104661
Bug ID: 104661
Summary: Catching exception by const value when
exception-object has lvalue-reference constructor
Product: gcc
Version: 12.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: fchelnokov at gmail dot com
Target Milestone: ---
This program
```
struct A {
A() {}
A(A&) {}
};
int main() {
try {
throw A{};
}
catch ( const A ) {
}
}
```
is presumably valid and accepted by Clang and MSVC, but GCC complains:
```
error: binding reference of type 'A&' to 'const A' discards qualifiers
10 | catch ( const A ) {
| ^
<source>:3:7: note: initializing argument 1 of 'A::A(A&)'
3 | A(A&) {}
| ^~
```
Demo: https://gcc.godbolt.org/z/as671TGqs
^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug c++/104661] [C++17+] Catching exception by const value when exception-object has lvalue-reference constructor
2022-02-23 12:40 [Bug c++/104661] New: Catching exception by const value when exception-object has lvalue-reference constructor fchelnokov at gmail dot com
@ 2022-02-23 23:14 ` pinskia at gcc dot gnu.org
2022-02-23 23:21 ` pinskia at gcc dot gnu.org
2023-09-01 14:10 ` fchelnokov at gmail dot com
2 siblings, 0 replies; 4+ messages in thread
From: pinskia at gcc dot gnu.org @ 2022-02-23 23:14 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104661
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|Catching exception by const |[C++17+] Catching exception
|value when exception-object |by const value when
|has lvalue-reference |exception-object has
|constructor |lvalue-reference
| |constructor
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Note clang accepts the code only with -std=c++17 and -std=c++20 as you didn't
mention in the bug report as you passing. C++17 changed some rules and all.
^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug c++/104661] [C++17+] Catching exception by const value when exception-object has lvalue-reference constructor
2022-02-23 12:40 [Bug c++/104661] New: Catching exception by const value when exception-object has lvalue-reference constructor fchelnokov at gmail dot com
2022-02-23 23:14 ` [Bug c++/104661] [C++17+] " pinskia at gcc dot gnu.org
@ 2022-02-23 23:21 ` pinskia at gcc dot gnu.org
2023-09-01 14:10 ` fchelnokov at gmail dot com
2 siblings, 0 replies; 4+ messages in thread
From: pinskia at gcc dot gnu.org @ 2022-02-23 23:21 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104661
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
See Also| |https://gcc.gnu.org/bugzill
| |a/show_bug.cgi?id=103048
Ever confirmed|0 |1
Status|UNCONFIRMED |NEW
Last reconfirmed| |2022-02-23
--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Confirmed, related to PR 103048.
^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug c++/104661] [C++17+] Catching exception by const value when exception-object has lvalue-reference constructor
2022-02-23 12:40 [Bug c++/104661] New: Catching exception by const value when exception-object has lvalue-reference constructor fchelnokov at gmail dot com
2022-02-23 23:14 ` [Bug c++/104661] [C++17+] " pinskia at gcc dot gnu.org
2022-02-23 23:21 ` pinskia at gcc dot gnu.org
@ 2023-09-01 14:10 ` fchelnokov at gmail dot com
2 siblings, 0 replies; 4+ messages in thread
From: fchelnokov at gmail dot com @ 2023-09-01 14:10 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104661
--- Comment #3 from Fedor Chelnokov <fchelnokov at gmail dot com> ---
Related discussion: https://stackoverflow.com/a/77021213/7325599
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2023-09-01 14:10 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
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2022-02-23 12:40 [Bug c++/104661] New: Catching exception by const value when exception-object has lvalue-reference constructor fchelnokov at gmail dot com
2022-02-23 23:14 ` [Bug c++/104661] [C++17+] " pinskia at gcc dot gnu.org
2022-02-23 23:21 ` pinskia at gcc dot gnu.org
2023-09-01 14:10 ` fchelnokov at gmail dot com
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