rsmith added a comment.
Hm, I think this is not quite right. For example, given:
template struct X {};
template auto f(T a, decltype(a)) {
struct A {};
struct B {};
return X();
}
decltype(f(0, 0)) g() {}
... I think we won't use a substitution from the first parameter of `f`
rsmith created this revision.
rsmith added a reviewer: rjmccall.
Herald added a project: clang.
Herald added a subscriber: cfe-commits.
Per the ABI rules, substitutable components are symbolic constructs, not
the associated mangling character strings, so references to function
parameters or templa
