Language
C++
Compiler
gcc 9.3.0
Options
Warnings
Boost 1.72.0
C++2a(GNU)
no pedantic
$ g++ prog.cc -Wall -Wextra -I/opt/wandbox/boost-1.72.0/gcc-9.3.0/include -std=gnu++2a Exit Code:
1
Author
anonymous
almost 5 years ago
C++
gcc 9.3.0
Author
anonymous
almost 5 years ago
$ g++ prog.cc -Wall -Wextra -I/opt/wandbox/boost-1.72.0/gcc-9.3.0/include -std=gnu++2a prog.cc: In function 'int main()':
prog.cc:12:21: warning: unused variable 'm' [-Wunused-variable]
12 | const int & m = f();
| ^
prog.cc:17:18: error: 'm' was not declared in this scope
17 | std::cout << m << std::endl;
| ^