Index: lib/asan/asan_interceptors.h
===================================================================
--- lib/asan/asan_interceptors.h
+++ lib/asan/asan_interceptors.h
@@ -55,7 +55,7 @@
 # define ASAN_INTERCEPT_FORK 0
 #endif
 
-#if SANITIZER_FREEBSD || SANITIZER_LINUX
+#if SANITIZER_FREEBSD || SANITIZER_LINUX || SANITIZER_NETBSD
 # define ASAN_USE_ALIAS_ATTRIBUTE_FOR_INDEX 1
 #else
 # define ASAN_USE_ALIAS_ATTRIBUTE_FOR_INDEX 0