Wandbox

Ran/Viewed Log

Author

anonymous

about 6 years ago

Language

C++

Compiler

gcc 9.1.0

Options

Warnings

Boost 1.70.0

C++2a(GNU)

no pedantic

Author

anonymous

about 6 years ago

$ g++ prog.cc -Wall -Wextra -I/opt/wandbox/boost-1.70.0/gcc-9.1.0/include -std=gnu++2a

prog.cc:8:13: error: explicitly defaulted function 'constexpr B::B()' cannot be declared as 'constexpr' because the implicit declaration is not 'constexpr':
    8 |   constexpr B() = default;
      |             ^
prog.cc:3:13: note: defaulted constructor calls non-'constexpr' 'A<T>::A() [with T = int]'
    3 |   constexpr A() = default;
      |             ^
prog.cc:3:13: note: 'A<T>::A() [with T = int]' is not usable as a 'constexpr' function because:
prog.cc:4:5: note: defaulted default constructor does not initialize 'int A<int>::v'
    4 |   T v;
      |     ^

Exit Code:

1