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// RUN: %clangxx_asan -O %s -o %t && %t
//
// Test __sanitizer_annotate_contiguous_container.
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <assert.h>
extern "C" {
void __sanitizer_annotate_contiguous_container(void *beg, void *end,
void *old_mid, void *new_mid);
bool __asan_address_is_poisoned(void *addr);
} // extern "C"
void TestContainer(size_t capacity) {
char *beg = new char[capacity];
char *end = beg + capacity;
char *mid = beg + capacity;
char *old_mid = 0;
unsigned seed = 0;
for (int i = 0; i < 10000; i++) {
size_t size = rand_r(&seed) % (capacity + 1);
assert(size <= capacity);
old_mid = mid;
mid = beg + size;
__sanitizer_annotate_contiguous_container(beg, end, old_mid, mid);
for (size_t idx = 0; idx < size; idx++)
assert(!__asan_address_is_poisoned(beg + idx));
for (size_t idx = size; idx < capacity; idx++)
assert(__asan_address_is_poisoned(beg + idx));
}
// Don't forget to unpoison the whole thing before destroing/reallocating.
__sanitizer_annotate_contiguous_container(beg, end, mid, end);
for (size_t idx = 0; idx < capacity; idx++)
assert(!__asan_address_is_poisoned(beg + idx));
delete[] beg;
}
int main(int argc, char **argv) {
int n = argc == 1 ? 128 : atoi(argv[1]);
for (int i = 0; i <= n; i++)
TestContainer(i);
}
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