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
about 3 years ago
C++
gcc 11.1.0
Author
anonymous
about 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 function 'int main()':
prog.cc:5:37: error: invalid use of incomplete type 'struct type_tester<int>'
5 | type_tester<decltype(abs(0.1))>{};
| ^
prog.cc:3:24: note: declaration of 'struct type_tester<int>'
3 | template<class> struct type_tester;
| ^~~~~~~~~~~
prog.cc:6:43: error: invalid use of incomplete type 'struct type_tester<double>'
6 | type_tester<decltype(std::abs(0.1))> {};
| ^
prog.cc:3:24: note: declaration of 'struct type_tester<double>'
3 | template<class> struct type_tester;
| ^~~~~~~~~~~