--- file_not_specified_in_diff	
+++ file_not_specified_in_diff	
@@ -, +, @@ 
--- a/libsandbox/trace.c
+++ b/libsandbox/trace.c
@@ -495,6 +495,7 @@ void trace_main(const char *filename, char *const argv[])
 
 	sa.sa_flags = SA_RESTART | SA_SIGINFO;
 	sa.sa_sigaction = trace_child_signal;
+	memset(&sa, 0, sizeof(sa));
 	sigaction(SIGCHLD, &sa, &old_sa);
 
 	sb_debug_dyn("trace_main: tracing: %s\n", filename);