[compiler-rt] [HWASAN] Add test to detected use after free in memcmp (PR #67204)

[Vitaly Buka via llvm-commits]

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@@ -0,0 +1,15 @@
+// RUN: %clangxx -O0 %s -o %t && %run %t
+// XFAIL: *
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vitalybuka wrote:

I guess for interceptors like these optimal testing is:

1. sanitizer_common - basic positive test check that it links and DO NOT CRASH, maybe basic functionality test
2. in each sanitizer - report test

  AddressSanitizer-i386-linux :: TestCases/Posix/bcmp_test.cpp
  AddressSanitizer-i386-linux :: TestCases/memcmp_strict_test.cpp
  AddressSanitizer-i386-linux :: TestCases/memcmp_test.cpp

  MemorySanitizer-X86_64 :: memcmp_test.cpp

So I suggest to adopt for HWASAN:
  AddressSanitizer-i386-linux :: TestCases/Posix/bcmp_test.cpp
  AddressSanitizer-i386-linux :: TestCases/memcmp_strict_test.cpp
  AddressSanitizer-i386-linux :: TestCases/memcmp_test.cpp

https://github.com/llvm/llvm-project/pull/67204