#include <functional> int main() { std::function<auto()> f; return 0; }
Standard input is empty
prog.cpp: In function ‘int main()’:
prog.cpp:4:21: error: invalid use of ‘auto’
std::function<auto()> f;
^
prog.cpp:4:22: error: template argument 1 is invalid
std::function<auto()> f;
^
Standard output is empty