157 lines
3.0 KiB
C
157 lines
3.0 KiB
C
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/* bug #2395: Bitwise operators with a boolean expression fail when optimized */
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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unsigned char a, b;
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unsigned char c = 199;
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unsigned char d = 100;
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int i = 50;
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int main(void) {
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int fails = 0;
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a = c ^ (d != 0);
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b = c ^ 1;
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printf("%u ^ (%u != 0) => %u\n", c, d, a);
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if (a != b) {
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printf("XOR error: a %d instead of %d\n", a, b);
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fails++;
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}
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a = c | (d != 0);
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b = c | 1;
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printf("%u | (%u != 0) => %u\n", c, d, a);
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if (a != b) {
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printf("OR error: a %d instead of %d\n", a, b);
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fails++;
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}
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a = c & (d != 0);
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b = c & 1;
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printf("%u & (%u != 0) => %u\n", c, d, a);
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if (a != b) {
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printf("AND error: a %d instead of %d\n", a, b);
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fails++;
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}
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a = c + (d != 0);
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b = c + 1;
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printf("%u ^ (%u != 0) => %u\n", c, d, a);
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if (a != b) {
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printf("ADD error: a %d instead of %d\n", a, b);
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fails++;
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}
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a = c - (d != 0);
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b = c - 1;
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printf("%u ^ (%u != 0) => %u\n", c, d, a);
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if (a != b) {
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printf("SUB error: a %d instead of %d\n", a, b);
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fails++;
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}
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a = c ^ (d >= 0);
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b = c ^ 1;
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printf("%u ^ (%u >= 0) => %u\n", c, d, a);
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if (a != b) {
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printf("XOR error: a %d instead of %d\n", a, b);
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fails++;
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}
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a = c | (d >= 0);
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b = c | 1;
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printf("%u | (%u >= 0) => %u\n", c, d, a);
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if (a != b) {
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printf("OR error: a %d instead of %d\n", a, b);
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fails++;
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}
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a = c & (d >= 0);
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b = c & 1;
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printf("%u & (%u >= 0) => %u\n", c, d, a);
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if (a != b) {
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printf("AND error: a %d instead of %d\n", a, b);
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fails++;
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}
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a = c + (d >= 0);
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b = c + 1;
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printf("%u ^ (%u >= 0) => %u\n", c, d, a);
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if (a != b) {
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printf("ADD error: a %d instead of %d\n", a, b);
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fails++;
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}
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a = c - (d >= 0);
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b = c - 1;
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printf("%u ^ (%u >= 0) => %u\n", c, d, a);
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if (a != b) {
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printf("SUB error: a %d instead of %d\n", a, b);
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fails++;
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}
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printf("%d errors\n", fails);
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a = c ^ (i >= 0);
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b = c ^ 1;
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printf("%u ^ (%d >= 0) => %u\n", c, d, a);
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if (a != b) {
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printf("XOR int cmp error: a %d instead of %d\n", a, b);
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fails++;
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}
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a = c | (i >= 0);
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b = c | 1;
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printf("%u | (%d >= 0) => %u\n", c, i, a);
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if (a != b) {
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printf("OR int cmp error: a %d instead of %d\n", a, b);
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fails++;
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}
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a = c & (i >= 0);
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b = c & 1;
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printf("%u & (%d >= 0) => %u\n", c, i, a);
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if (a != b) {
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printf("AND int cmp error: a %d instead of %d\n", a, b);
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fails++;
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}
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a = c + (i >= 0);
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b = c + 1;
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printf("%u ^ (%d >= 0) => %u\n", c, i, a);
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if (a != b) {
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printf("ADD int cmp error: a %d instead of %d\n", a, b);
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fails++;
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}
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a = c - (i >= 0);
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b = c - 1;
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printf("%u ^ (%d >= 0) => %u\n", c, i, a);
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if (a != b) {
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printf("SUB int cmp error: a %d instead of %d\n", a, b);
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fails++;
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}
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printf("%d errors\n", fails);
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return fails;
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}
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