Index: lib/tsan/rtl/tsan_interceptors.cc
===================================================================
--- lib/tsan/rtl/tsan_interceptors.cc
+++ lib/tsan/rtl/tsan_interceptors.cc
@@ -110,11 +110,17 @@
     sighandler_t sa_handler;
     void (*sa_sigaction)(int sig, my_siginfo_t *siginfo, void *uctx);
   };
+#if SANITIZER_FREEBSD
+  int sa_flags;
+  __sanitizer_sigset_t sa_mask;
+#else
   __sanitizer_sigset_t sa_mask;
   int sa_flags;
   void (*sa_restorer)();
+#endif
 };
 
+
 const sighandler_t SIG_DFL = (sighandler_t)0;
 const sighandler_t SIG_IGN = (sighandler_t)1;
 const sighandler_t SIG_ERR = (sighandler_t)-1;