https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106366
Bug ID: 106366
Summary: CTAD fails to prioritize initializer_list when done
via Deduction guide and inherited CTORS
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: peter.cpp at sommerlad dot ch
Target Milestone: ---
The following code fails to compile on trunk, 12.1 and all 11 versions of g++ I
tried and compiles fine with clang and msvc:
#include <vector>
template<typename T>
struct Adapter: std::vector<T>{
using std::vector<T>::vector;
// Adapter(std::initializer_list<T> l)
// :std::vector<T>::vector(l){}
};
template<typename T>
Adapter(std::initializer_list<T>) -> Adapter<T>;
int main(){
Adapter x{1,2,3};
}
see https://compiler-explorer.com/z/hj9zPPa8d
defining the constructor instead of the (not yet inherited) deduction guide
makes it work.
