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* [Bug c++/107470] New: GCC falsely accepts friend declaration with mismatching requirements
@ 2022-10-31 13:46 h2+bugs at fsfe dot org
2022-10-31 16:57 ` [Bug c++/107470] " ppalka at gcc dot gnu.org
0 siblings, 1 reply; 2+ messages in thread
From: h2+bugs at fsfe dot org @ 2022-10-31 13:46 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107470
Bug ID: 107470
Summary: GCC falsely accepts friend declaration with
mismatching requirements
Product: gcc
Version: 12.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: h2+bugs at fsfe dot org
Target Milestone: ---
#include <concepts>
template <std::integral T>
requires std::unsigned_integral<T>
struct S
{
template <std::integral T2> // template <typename T2>
friend class S;
};
int main()
{
S<unsigned> s;
}
The code is accepted by GCC and rejected by clang. However, if the friend
declaration is fully unconstrained, it is also rejected by GCC.
Code like this exists in libstdc++ which clang stumbles over (I will create a
separate library issue for that).
^ permalink raw reply [flat|nested] 2+ messages in thread
* [Bug c++/107470] GCC falsely accepts friend declaration with mismatching requirements
2022-10-31 13:46 [Bug c++/107470] New: GCC falsely accepts friend declaration with mismatching requirements h2+bugs at fsfe dot org
@ 2022-10-31 16:57 ` ppalka at gcc dot gnu.org
0 siblings, 0 replies; 2+ messages in thread
From: ppalka at gcc dot gnu.org @ 2022-10-31 16:57 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107470
Patrick Palka <ppalka at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |ppalka at gcc dot gnu.org
Status|UNCONFIRMED |RESOLVED
Resolution|--- |DUPLICATE
--- Comment #1 from Patrick Palka <ppalka at gcc dot gnu.org> ---
dup
*** This bug has been marked as a duplicate of bug 96830 ***
^ permalink raw reply [flat|nested] 2+ messages in thread
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2022-10-31 13:46 [Bug c++/107470] New: GCC falsely accepts friend declaration with mismatching requirements h2+bugs at fsfe dot org
2022-10-31 16:57 ` [Bug c++/107470] " ppalka at gcc dot gnu.org
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