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* [Bug c++/102691] New: rvalue reference overload in not preferred over lvalue reference
@ 2021-10-11 21:22 fchelnokov at gmail dot com
2021-10-12 13:40 ` [Bug c++/102691] " ppalka at gcc dot gnu.org
0 siblings, 1 reply; 2+ messages in thread
From: fchelnokov at gmail dot com @ 2021-10-11 21:22 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102691
Bug ID: 102691
Summary: rvalue reference overload in not preferred over lvalue
reference
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 code is valid:
```
struct Foo {};
struct Bar {};
constexpr int Baz(const Foo&) { return 0; }
constexpr int Baz(Bar&&) { return 1; }
int main()
{
static_assert( Baz({}) == 1 );
}
```
Here Baz(Bar&&) must be preferred according to [over.ics.rank]/(3.2), as Clang
does.
Unfortunately, GCC wrongly prints ambiguity error, demo:
https://gcc.godbolt.org/z/7Yq8hdcso
Related discussion: https://stackoverflow.com/q/62599846/7325599
^ permalink raw reply [flat|nested] 2+ messages in thread
* [Bug c++/102691] rvalue reference overload in not preferred over lvalue reference
2021-10-11 21:22 [Bug c++/102691] New: rvalue reference overload in not preferred over lvalue reference fchelnokov at gmail dot com
@ 2021-10-12 13:40 ` ppalka at gcc dot gnu.org
0 siblings, 0 replies; 2+ messages in thread
From: ppalka at gcc dot gnu.org @ 2021-10-12 13:40 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102691
Patrick Palka <ppalka at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |ppalka at gcc dot gnu.org
Resolution|--- |DUPLICATE
Status|UNCONFIRMED |RESOLVED
--- Comment #1 from Patrick Palka <ppalka at gcc dot gnu.org> ---
Dup of PR102283 (will respond there)
*** This bug has been marked as a duplicate of bug 102283 ***
^ permalink raw reply [flat|nested] 2+ messages in thread
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2021-10-11 21:22 [Bug c++/102691] New: rvalue reference overload in not preferred over lvalue reference fchelnokov at gmail dot com
2021-10-12 13:40 ` [Bug c++/102691] " ppalka at gcc dot gnu.org
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