[compiler-rt] [NFCI] [hwasan] Add test demonstrating hwasan lsan false positive (PR #142874)

[Florian Mayer via llvm-commits]

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@@ -0,0 +1,30 @@
+// Make sure dlerror is not classified as a leak even if we use dynamic TLS.
+// This is currently not implemented, so this test is XFAIL.
+
+// RUN: %clangxx_hwasan -O0 %s -o %t && HWASAN_OPTIONS=detect_leaks=1 %run %t
+// XFAIL: *
+
+#include <assert.h>
+#include <dlfcn.h>
+#include <pthread.h>
+#include <sanitizer/hwasan_interface.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+constexpr auto kKeys = 100;
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fmayer wrote:

OK.

https://github.com/llvm/llvm-project/pull/142874