Index: lib/sanitizer_common/sanitizer_platform_limits_openbsd.h
===================================================================
--- lib/sanitizer_common/sanitizer_platform_limits_openbsd.h
+++ lib/sanitizer_common/sanitizer_platform_limits_openbsd.h
@@ -31,6 +31,10 @@
   _GET_LINK_MAP_BY_DLOPEN_HANDLE(handle, 164)
 #endif
 
+#if !defined(RLIMIT_AS)
+#define RLIMIT_AS RLIMIT_DATA
+#endif
+
 namespace __sanitizer {
 extern unsigned struct_utsname_sz;
 extern unsigned struct_stat_sz;