remove UNDEFINED_SANITIZER use

Summary: Assume, when UBSAN is used, it is always used on top of ASAN.

Reviewed By: luciang

Differential Revision: D8360231

fbshipit-source-id: 3106cfa53567b18f199e9303ea4c14a464ff03cc

folly/CPortability.h

@@ -105,8 +105,7 @@
  * Define a convenience macro to test when ASAN, UBSAN or TSAN sanitizer are
  * being used
  */
-#if defined(FOLLY_SANITIZE_ADDRESS) || defined(FOLLY_SANITIZE_THREAD) || \
-    defined(UNDEFINED_SANITIZER)
+#if defined(FOLLY_SANITIZE_ADDRESS) || defined(FOLLY_SANITIZE_THREAD)
 #define FOLLY_SANITIZE 1
 #endif
 

folly/fibers/FiberManagerInternal-inl.h

@@ -37,8 +37,7 @@ namespace fibers {
 namespace {
 
 inline FiberManager::Options preprocessOptions(FiberManager::Options opts) {
-#if defined(FOLLY_SANITIZE_ADDRESS) || defined(UNDEFINED_SANITIZER) || \
-    defined(FOLLY_SANITIZE_THREAD)
+#if defined(FOLLY_SANITIZE_ADDRESS) || defined(FOLLY_SANITIZE_THREAD)
   /* Sanitizers need a lot of extra stack space.
      16x is a conservative estimate, 8x also worked with tests
      where it mattered.  Note that overallocating here does not necessarily

folly/test/ThreadLocalTest.cpp

@@ -584,8 +584,8 @@ TEST(ThreadLocal, Fork2) {
 //
 // We also cannot run this test unless folly was compiled with PIC support,
 // since we cannot build thread_local_test_lib.so without PIC.
-#if defined FOLLY_SANITIZE_ADDRESS || defined UNDEFINED_SANITIZER || \
-    defined FOLLY_SANITIZE_THREAD || !defined FOLLY_SUPPORT_SHARED_LIBRARY
+#if defined FOLLY_SANITIZE_ADDRESS || defined FOLLY_SANITIZE_THREAD || \
+    !defined FOLLY_SUPPORT_SHARED_LIBRARY
 #define SHARED_LIBRARY_TEST_NAME DISABLED_SharedLibrary
 #else
 #define SHARED_LIBRARY_TEST_NAME SharedLibrary