Bug #18184 2011-06-25 12:21

m1dyyy

-Wunreachable-code doesn't correctly detect unreachable code

Compiler flag does not correctly recognize unreachable code.

Below steps to reproduce:

1. Set compiler flag -Wunreachable-code

2. Write code (on Windows):

//Snippet #1 [generates warning: "will never be executed"]:

#include <iostream>

using namespace std;

int main() {

cout << "This line is reachable" << endl;

//this line is unreachable regarding -Wunreachable-code.

int* x = new int(56);

cout << *x << endl; //obviously prints 56

cout << "This line is reachable too" << endl;

return 0;

}

//Snippet #2 [generates NO warnings]:

#include <iostream>

using namespace std;

int main() {

cout << "This line is reachable" << endl;

int* x = new int;

*x = 56;

cout << *x << endl;

cout << "This line is reachable too" << endl;

return 0;

}

Category

Application::WrongBehaviour

Group

 

Status

Closed

Close date

2011-06-30 06:31

Assigned to