Language
C++
Compiler
gcc 11.1.0
Options
Warnings
Boost 1.78.0
C++2a
no pedantic
$ g++ prog.cc -Wall -Wextra -I/opt/wandbox/boost-1.78.0-gcc-11.1.0/include -std=c++2a Exit Code:
1
Author
anonymous
over 3 years ago
C++
gcc 11.1.0
Author
anonymous
over 3 years ago
$ g++ prog.cc -Wall -Wextra -I/opt/wandbox/boost-1.78.0-gcc-11.1.0/include -std=c++2a prog.cc: In instantiation of 'auto negate(T) [with T = non_negatable]':
prog.cc:14:11: required by substitution of 'template<class T> requires is_negatable<T> auto do_negate(T) [with T = non_negatable]'
prog.cc:29:14: required from here
prog.cc:8:12: error: no match for 'operator-' (operand type is 'non_negatable')
8 | return -a;
| ^~