rsmith added inline comments.
================
Comment at: clang/lib/Sema/SemaDeclCXX.cpp:1118-1130
+ // ... and if that finds at least one declaration that is a function
+ // template whose first template parameter is a non-type parameter ...
+ LookupResult::Filter Filter = MemberGet.makeFilter();
+ while (Filter.hasNext()) {
+ NamedDecl *ND = Filter.next();
+ if (auto *FTD = dyn_cast<FunctionTemplateDecl>(ND)) {
+ TemplateParameterList *TPL = FTD->getTemplateParameters();
----------------
This should be done by walking the lookup results, not by filtering them.
Testcase:
```
struct A {
int get();
};
struct B {
template<int> int get();
};
struct C : A, B {};
// plus specializations of tuple_size<C> and tuple_element<N, C>
auto [x] = C();
```
This should be ill-formed due to ambiguity when looking up `C::get`. We should
not resolve the ambiguity by selecting `B::get`.
Repository:
rC Clang
https://reviews.llvm.org/D50418
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