[llvm-branch-commits] [lld] [libcxx] [llvm] [compiler-rt] [clang-tools-extra] [clang] [test][hwasan] Implement sanitizer_specific for HWASAN (PR #75280)

[Thurston Dang via llvm-branch-commits]

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@@ -42,7 +42,18 @@ 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) {
-  __hwasan_tag_memory(p, ~__hwasan_get_tag_from_pointer(p), 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);
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thurstond wrote:

Is this missing the tag parameter?

https://github.com/llvm/llvm-project/pull/75280