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* [Bug c++/67426] New: Ambiguous overload between different function templates, where one has non-deduced arg
@ 2015-09-01 18:10 barry.revzin at gmail dot com
2021-08-02 3:14 ` [Bug c++/67426] " pinskia at gcc dot gnu.org
0 siblings, 1 reply; 2+ messages in thread
From: barry.revzin at gmail dot com @ 2015-09-01 18:10 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67426
Bug ID: 67426
Summary: Ambiguous overload between different function
templates, where one has non-deduced arg
Product: gcc
Version: 5.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: barry.revzin at gmail dot com
Target Milestone: ---
Consider this example (also in SO question
http://stackoverflow.com/q/32335523/2069064):
#include <utility>
template <int N>
using size_ = std::integral_constant<int, N>;
// (1)
template <int From>
void f(size_<From>, size_<From+1> )
{ }
// (2)
template <int From, int To>
void f(size_<From>, size_<To> )
{ }
int main()
{
f(size_<0>{}, size_<1>{});
}
gcc 5.2 declares this call ambiguous. Deduction from (1) to (2) succeeds
easily, should deduction from (2) to (1) not fail?
^ permalink raw reply [flat|nested] 2+ messages in thread
* [Bug c++/67426] Ambiguous overload between different function templates, where one has non-deduced arg
2015-09-01 18:10 [Bug c++/67426] New: Ambiguous overload between different function templates, where one has non-deduced arg barry.revzin at gmail dot com
@ 2021-08-02 3:14 ` pinskia at gcc dot gnu.org
0 siblings, 0 replies; 2+ messages in thread
From: pinskia at gcc dot gnu.org @ 2021-08-02 3:14 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67426
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |rejects-valid
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
GCC, clang and ICC all reject this code.
MSVC accepts it.
^ permalink raw reply [flat|nested] 2+ messages in thread
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2015-09-01 18:10 [Bug c++/67426] New: Ambiguous overload between different function templates, where one has non-deduced arg barry.revzin at gmail dot com
2021-08-02 3:14 ` [Bug c++/67426] " pinskia at gcc dot gnu.org
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