diff --git a/compiler-rt/lib/sanitizer_common/sanitizer_common_interceptors.inc b/compiler-rt/lib/sanitizer_common/sanitizer_common_interceptors.inc
--- a/compiler-rt/lib/sanitizer_common/sanitizer_common_interceptors.inc
+++ b/compiler-rt/lib/sanitizer_common/sanitizer_common_interceptors.inc
@@ -134,11 +134,11 @@
 
 // Platform-specific options.
 #if SANITIZER_MAC
-#define PLATFORM_HAS_DIFFERENT_MEMCPY_AND_MEMMOVE false
+#define PLATFORM_HAS_DIFFERENT_MEMCPY_AND_MEMMOVE 0
 #elif SANITIZER_WINDOWS64
-#define PLATFORM_HAS_DIFFERENT_MEMCPY_AND_MEMMOVE false
+#define PLATFORM_HAS_DIFFERENT_MEMCPY_AND_MEMMOVE 0
 #else
-#define PLATFORM_HAS_DIFFERENT_MEMCPY_AND_MEMMOVE true
+#define PLATFORM_HAS_DIFFERENT_MEMCPY_AND_MEMMOVE 1
 #endif  // SANITIZER_MAC
 
 #ifndef COMMON_INTERCEPTOR_INITIALIZE_RANGE
@@ -823,11 +823,11 @@
   // N.B.: If we switch this to internal_ we'll have to use internal_memmove
   // due to memcpy being an alias of memmove on OS X.
   void *ctx;
-  if (PLATFORM_HAS_DIFFERENT_MEMCPY_AND_MEMMOVE) {
+#if PLATFORM_HAS_DIFFERENT_MEMCPY_AND_MEMMOVE
     COMMON_INTERCEPTOR_MEMCPY_IMPL(ctx, dst, src, size);
-  } else {
+#else
     COMMON_INTERCEPTOR_MEMMOVE_IMPL(ctx, dst, src, size);
-  }
+#endif
 }
 
 #define INIT_MEMCPY                                  \