diff --git a/compiler-rt/lib/asan/asan_mapping.h b/compiler-rt/lib/asan/asan_mapping.h
--- a/compiler-rt/lib/asan/asan_mapping.h
+++ b/compiler-rt/lib/asan/asan_mapping.h
@@ -13,6 +13,8 @@
 #ifndef ASAN_MAPPING_H
 #define ASAN_MAPPING_H
 
+#include "sanitizer_common/sanitizer_platform.h"
+
 // The full explanation of the memory mapping could be found here:
 // https://github.com/google/sanitizers/wiki/AddressSanitizerAlgorithm
 //