================
@@ -10960,6 +10960,10 @@ OverloadCandidateSet::BestViableFunction(Sema &S,
SourceLocation Loc,
S.diagnoseEquivalentInternalLinkageDeclarations(Loc, Best->Function,
EquivalentCands);
+ // [over.match.best]/4 is checked for in Sema::ConvertArgumentsForCall,
+ // because not every function call goes through our overload resolution
+ // machinery, even if the Standard says it supposed to.
+
----------------
cor3ntin wrote:
do we have test for something like that
```
namespace A {
extern "C" void f(long = 0); // viable candidate
}
namespace B {
extern "C" void f(long = 0); // viable candidate
}
using A::f;
using B::f;
void f(int) {} // best candidate
void g() {
f(0); // should not diagnose
}
```
https://github.com/llvm/llvm-project/pull/124844
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