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/* { dg-do run } */
/* { dg-require-effective-target hwaddress_exec } */
/* Alloca is given a different tag to other variables.
vararray should behave in the same way. */
#define alloca __builtin_alloca
#define assert(x) if (!(x)) __builtin_abort ()
struct two_values {
int left;
int right;
};
/* Require default hwasan tag ABI.
Know we're using AArch64 since that's the only architecture we run hwasan
tests on. */
char tag_of (void * x) { return ((unsigned long long)x) >> 56; }
int __attribute__ ((noinline))
alloca_different_tag (int num)
{
struct two_values tmp_object = {
.left = 100,
.right = num,
};
int *big_array = (int *)alloca (num * sizeof (int));
int other_array[100];
char first_tag = tag_of (&tmp_object);
char second_tag = tag_of (big_array);
char other_tag = tag_of (other_array);
assert (first_tag != second_tag);
assert (second_tag != other_tag);
assert (first_tag != other_tag);
return 0;
}
int __attribute__ ((noinline))
vararray_different_tag (int num)
{
struct two_values tmp_object = {
.left = 100,
.right = num,
};
int big_array[num];
int other_array[100];
char first_tag = tag_of (&tmp_object);
char second_tag = tag_of (big_array);
char other_tag = tag_of (other_array);
assert (first_tag != second_tag);
assert (second_tag != other_tag);
assert (first_tag != other_tag);
return 0;
}
int __attribute__ ((noinline))
main ()
{
alloca_different_tag (10);
vararray_different_tag (8);
return 0;
}
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