Wandbox

Ran/Viewed Log

Author

anonymous

over 6 years ago

Language

C++

Compiler

clang 6.0.1

Options

Warnings

Boost 1.68.0

C++17

no pedantic

Author

anonymous

over 6 years ago

$ clang++ prog.cc -Wall -Wextra -I/opt/wandbox/boost-1.68.0/clang-6.0.1/include -std=c++17

prog.cc:9:5: error: static_assert failed due to requirement 'std::is_invocable_r_v<int, (lambda at prog.cc:16:22), int>'
    static_assert(std::is_invocable_r_v<int, x_Action, int>);
    ^             ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
prog.cc:16:5: note: in instantiation of function template specialization 'functor_by_value<(lambda at prog.cc:16:22)>' requested here
    functor_by_value([](char const * x) {return x;}); // error
    ^
prog.cc:10:12: error: no matching function for call to object of type '(lambda at prog.cc:16:22)'
    return action(int{1});
           ^~~~~~
prog.cc:16:22: note: candidate function not viable: no known conversion from 'int' to 'const char *' for 1st argument
    functor_by_value([](char const * x) {return x;}); // error
                     ^
prog.cc:16:22: note: conversion candidate of type 'const char *(*)(const char *)'
2 errors generated.

Exit Code:

1