* Exit non-zero if one process crashed.

doc/zzuf.1

@@ -220,6 +220,10 @@ Display a short help message and exit.
 .TP
 \fB\-V\fR, \fB\-\-version\fR
 Output version information and exit.
+.SH DIAGNOSTICS
+.PP
+Exit status is zero if no child process crashed. If one or several children
+crashed, \fBzzuf\fR exits with status 1.
 .SH EXAMPLES
 .PP
 Fuzz the input of the \fBcat\fR program using default settings:

src/zzuf.c

@@ -335,7 +335,7 @@ int main(int argc, char *argv[])
     free(newargv);
     free(child_list);
 
-    return EXIT_SUCCESS;    
+    return crashes ? EXIT_FAILURE : EXIT_SUCCESS;    
 }
 
 static void loop_stdin(void)