Description:
When bool is uninitialezed, the result will be wrong.

Additional info:
gcc 4.4.2-2 (extra)
gcc 4.4.2-3 (testing)

Steps to reproduce:
#include <stdio.h>
#include <stdbool.h>

int main() {
bool num;
printf("num=%d\n", num);
return 0;
}