================
@@ -31,6 +31,30 @@ static void make_mem_good(void *p, size_t s) {
static void make_mem_bad(void *p, size_t s) {
__asan_poison_memory_region(p, s);
}
+#elif __has_feature(hwaddress_sanitizer)
+# include <sanitizer/hwasan_interface.h>
+# include <stdlib.h>
+static void check_mem_is_good(void *p, size_t s) {
+ if (__hwasan_test_shadow(p, s) != -1)
+ abort();
+}
+static void make_mem_good(void *p, size_t s) {
+ __hwasan_tag_memory(p, __hwasan_get_tag_from_pointer(p), s);
+}
+static void make_mem_bad(void *p, size_t s) {
+ uint8_t tag = ~__hwasan_get_tag_from_pointer(p);
+ if (!tag) {
+ // Nothing wrong with tag zero, but non-zero tags help to detect never
+ // tagged memory.
+ tag = 1;
+ }
+ __hwasan_tag_memory(p, , s);
+ // With missaligned `p` or short granules we can't guaranlee tag mismatch.
----------------
thurstond wrote:
Nits: "misaligned", "guaranlee"
https://github.com/llvm/llvm-project/pull/75280
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