Index: lib/asan/asan_interceptors.cc
===================================================================
--- lib/asan/asan_interceptors.cc
+++ lib/asan/asan_interceptors.cc
@@ -725,11 +725,14 @@
   InitializeCommonInterceptors();
 
   // Intercept mem* functions.
-  ASAN_INTERCEPT_FUNC(memmove);
+  ASAN_INTERCEPT_FUNC(memcpy);
   ASAN_INTERCEPT_FUNC(memset);
   if (PLATFORM_HAS_DIFFERENT_MEMCPY_AND_MEMMOVE) {
-    ASAN_INTERCEPT_FUNC(memcpy);
+    // FIXME(wwchrome): REAL(memmove) may be nullptr, if the following line is
+    // skipped, due to memcpy and memmove having the same address.
+    ASAN_INTERCEPT_FUNC(memmove);
   }
+  CHECK(REAL(memcopy));
 
   // Intercept str* functions.
   ASAN_INTERCEPT_FUNC(strcat);  // NOLINT