[hwasan] use reads instead of writes in a test
#include <stdio.h>
#include <sanitizer/hwasan_interface.h>
+static volatile char sink;
+
int main(int argc, char **argv) {
__hwasan_enable_allocator_tagging();
int offset = argc < 2 ? 40 : atoi(argv[1]);
int size = argc < 3 ? 30 : atoi(argv[2]);
char * volatile x = (char*)malloc(size);
fprintf(stderr, "base: %p access: %p\n", x, &x[offset]);
- x[offset] = 42;
+ sink = x[offset];
// CHECK40-LEFT: allocated heap chunk; size: 32 offset: 8
// CHECK40-LEFT: is located 10 bytes to the right of 30-byte region
