[PATCH] [compiler-rt] Implement AddressSanitizer suppressions

[Kuba Brecka]

Addressing review comments.

> > // Check that reports from instrumented code cannot be suppressed.
> Wait, how do you enforce that? By assuming that memset() in user code will be
> turned into __asan_memset() call? In fact, I see little harm in suppressing
> reports from memset() from instrumented code if the user explicitly added
> interceptor_name:memset to suppression file. After all, this would work for
> another interceptors (like strcpy), won't it?

I meant memset/memcpy/memmove only. Since these can easily be inlined, the suppression will not work reliably on them, and so it sounds like a good idea to just disallow suppressions for these functions (when used from instrumented code).

http://reviews.llvm.org/D6280

Files:
  lib/asan/CMakeLists.txt
  lib/asan/asan_interceptors.cc
  lib/asan/asan_rtl.cc
  lib/asan/asan_suppressions.cc
  lib/asan/asan_suppressions.h
  lib/sanitizer_common/sanitizer_suppressions.cc
  lib/sanitizer_common/sanitizer_suppressions.h
  lib/sanitizer_common/tests/sanitizer_suppressions_test.cc
  test/asan/TestCases/Darwin/suppressions-darwin.cc
  test/asan/TestCases/suppressions-function.cc
  test/asan/TestCases/suppressions-instrumented-code.cc
  test/asan/TestCases/suppressions-interceptor.cc
  test/asan/TestCases/suppressions-library.cc
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