Index: lib/asan/asan_interceptors.cc
===================================================================
--- lib/asan/asan_interceptors.cc
+++ lib/asan/asan_interceptors.cc
@@ -399,7 +399,7 @@
     }                                                                          \
     ENSURE_ASAN_INITED();                                                      \
     if (flags()->replace_intrin) {                                             \
-      if (to != from) {                                                        \
+      if (PLATFORM_HAS_DIFFERENT_MEMCPY_AND_MEMMOVE && to != from) {           \
         CHECK_RANGES_OVERLAP("memcpy", to, size, from, size);                  \
       }                                                                        \
       ASAN_READ_RANGE(ctx, from, size);                                        \