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Add another test for bit-field unit overlap

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Test when there is another field after bit-fields with
allocation unit overlap.
This commit is contained in:
Jesse Rosenstock 2020-06-28 21:24:21 +02:00 committed by Oliver Schmidt
parent 2f456ce4e2
commit 6f85ee9d95
1 changed files with 51 additions and 0 deletions
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51
test/val/bitfield.c
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@ -119,11 +119,62 @@ static void test_overlap(void)
}
}
static struct overlap_with_int {
unsigned int x : 10;
unsigned int y : 10;
unsigned int z;
} oi = {111, 222, 333};
static void test_overlap_with_int(void)
{
/* We would like this to be 5. */
if (sizeof(struct overlap_with_int) != 6) {
printf("Got sizeof(struct overlap_with_int) = %zu, expected 6.\n",
sizeof(struct overlap_with_int));
failures++;
}
if (oi.x != 111) {
printf("Got oi.x = %u, expected 111.\n", oi.x);
failures++;
}
if (oi.y != 222) {
printf("Got oi.y = %u, expected 222.\n", oi.y);
failures++;
}
if (oi.z != 333) {
printf("Got oi.z = %u, expected 333.\n", oi.z);
failures++;
}
oi.x = 444;
oi.y = 555;
oi.z = 666;
if (oi.x != 444) {
printf("Got oi.x = %u, expected 444.\n", oi.x);
failures++;
}
if (oi.y != 555) {
printf("Got oi.y = %u, expected 555.\n", oi.y);
failures++;
}
if (oi.z != 666) {
printf("Got oi.z = %u, expected 666.\n", oi.z);
failures++;
}
}
int main(void)
{
test_four_bits();
test_four_bits_with_int();
test_overlap();
test_overlap_with_int();
printf("failures: %u\n", failures);
return failures;
}