$OpenBSD: patch-ext_standard_exec_c,v 1.1 2004/04/17 10:33:50 avsm Exp $
--- ext/standard/exec.c.orig	2003-11-19 09:34:36.000000000 -0600
+++ ext/standard/exec.c	2004-04-14 19:40:37.000000000 -0500
@@ -942,7 +942,7 @@ PHP_FUNCTION(proc_open)
 				close(descriptors[i].childend);
 		}
 
-		execl("/bin/sh", "sh", "-c", command, NULL);
+		execl("/bin/sh", "sh", "-c", command, (void *)NULL);
 		_exit(127);
 
 	} else if (child < 0) {