Language
C++
Compiler
gcc HEAD 11.0.0 20201208 (experimental)
Options
Warnings
Boost 1.73.0
C++17
no pedantic
$ g++ prog.cc -Wall -Wextra -I/opt/wandbox/boost-1.73.0/gcc-head/include -std=c++17 23
Exit Code:
0
Author
anonymous
over 4 years ago
C++
gcc HEAD 11.0.0 20201208 (experimental)
Author
anonymous
over 4 years ago
$ g++ prog.cc -Wall -Wextra -I/opt/wandbox/boost-1.73.0/gcc-head/include -std=c++17 prog.cc: In function 'int main()':
prog.cc:7:26: warning: operation on 'i' may be undefined [-Wsequence-point]
7 | std::cout << i++ << i++; // WARNING
| ~^~
prog.cc:6:9: warning: unused variable 'j' [-Wunused-variable]
6 | int j = i++ << i++; // NO WARNING
| ^
23