--- screen-4.0.2/fileio.c.varargs 2003-09-08 10:25:28.000000000 -0400 +++ screen-4.0.2/fileio.c 2005-08-23 08:49:21.000000000 -0400 @@ -779,7 +779,7 @@ char *cmd; #ifdef SIGPIPE signal(SIGPIPE, SIG_DFL); #endif - execl("/bin/sh", "sh", "-c", cmd, 0); + execl("/bin/sh", "sh", "-c", cmd, NULL); Panic(errno, "/bin/sh"); default: break;