Index: lib/msan/msan_interceptors.cc
===================================================================
--- lib/msan/msan_interceptors.cc
+++ lib/msan/msan_interceptors.cc
@@ -38,6 +38,7 @@
 #define fstat __fstat50
 #define gettimeofday __gettimeofday50
 #define getrusage __getrusage50
+#define tzset __tzset50
 #endif
 
 #include <stdarg.h>
@@ -1137,9 +1138,12 @@
 
 extern char *tzname[2];
 
-INTERCEPTOR(void, tzset, int fake) {
+INTERCEPTOR(void, tzset, void) {
   ENSURE_MSAN_INITED();
-  REAL(tzset)(fake);
+  // Required for NetBSD, as there might be reloaded internal structs and we
+  // don't sanitize them.
+  InterceptorScope interceptor_scope;
+  REAL(tzset)();
   if (tzname[0])
     __msan_unpoison(tzname[0], REAL(strlen)(tzname[0]) + 1);
   if (tzname[1])