Affected subclause: [over.match.class.deduct]
Change: Deducing class template arguments from inherited constructors
. Rationale: Making class template argument deduction consistent with construction
. Effect on original feature: Valid ISO C++ 2020 code may become ill-formed or change meaning
in this revision of C++
. [
Example 1:
template<typename T>
struct B {
B(T);
};
template<typename T>
struct D : B<T *> {
D(T);
using B<T *>::B;
T m = "a";
};
D d("");
—
end example]