Index: lib/msan/msan_interceptors.cc
===================================================================
--- lib/msan/msan_interceptors.cc
+++ lib/msan/msan_interceptors.cc
@@ -37,6 +37,18 @@
 // ACHTUNG! No other system header includes in this file.
 // Ideally, we should get rid of stdarg.h as well.
 
+#if SANITIZER_NETBSD
+#define gettimeofday __gettimeofday50
+#define getrusage __getrusage50
+#define shmctl __shmctl50
+#endif
+
+#if SANITIZER_NETBSD
+#define sigaction_symname __sigaction14
+#else
+#define sigaction_symname sigaction
+#endif
+
 using namespace __msan;
 
 using __sanitizer::memory_order;
@@ -1298,7 +1310,7 @@
         pnew_act->sigaction = (decltype(pnew_act->sigaction))new_cb;
       }
     }
-    res = REAL(sigaction)(signo, pnew_act, oldact);
+    res = REAL(sigaction_symname)(signo, pnew_act, oldact);
     if (res == 0 && oldact) {
       uptr cb = (uptr)oldact->sigaction;
       if (cb == (uptr)SignalAction || cb == (uptr)SignalHandler) {
@@ -1306,7 +1318,7 @@
       }
     }
   } else {
-    res = REAL(sigaction)(signo, act, oldact);
+    res = REAL(sigaction_symname)(signo, act, oldact);
   }
 
   if (res == 0 && oldact) {