mirror of https://github.com/cc65/cc65.git
45 lines
840 B
C
45 lines
840 B
C
|
|
/* bug #2395: Bitwise operators with a boolean expression fail when optimized */
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
|
|
unsigned char a, b;
|
|
unsigned char c = 199;
|
|
unsigned char d = 100;
|
|
|
|
int main(void) {
|
|
int fails = 0;
|
|
|
|
a = c ^ (d != 0);
|
|
b = c ^ 1;
|
|
|
|
printf("%u ^ (%u != 0) => %u\n", c, d, a);
|
|
if (a != b) {
|
|
printf("XOR error: a %d instead of %d\n", a, b);
|
|
fails++;
|
|
}
|
|
|
|
a = c | (d != 0);
|
|
b = c | 1;
|
|
|
|
printf("%u | (%u != 0) => %u\n", c, d, a);
|
|
if (a != b) {
|
|
printf("OR error: a %d instead of %d\n", a, b);
|
|
fails++;
|
|
}
|
|
|
|
a = c & (d != 0);
|
|
b = c & 1;
|
|
|
|
printf("%u & (%u != 0) => %u\n", c, d, a);
|
|
if (a != b) {
|
|
printf("AND error: a %d instead of %d\n", a, b);
|
|
fails++;
|
|
}
|
|
printf("%d errors\n", fails);
|
|
|
|
return fails;
|
|
}
|