--- Libc/Libc-1669.0.4/gen/FreeBSD/exec.c
+++ Libc/Libc-763.12/gen/FreeBSD/exec.c
@@ -1,6 +1,4 @@
 /*-
- * SPDX-License-Identifier: BSD-3-Clause
- *
  * Copyright (c) 1991, 1993
  *	The Regents of the University of California.  All rights reserved.
  *
@@ -12,7 +10,7 @@
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
  *    documentation and/or other materials provided with the distribution.
- * 3. Neither the name of the University nor the names of its contributors
+ * 4. Neither the name of the University nor the names of its contributors
  *    may be used to endorse or promote products derived from this software
  *    without specific prior written permission.
  *
@@ -37,6 +35,7 @@
 
 #include "namespace.h"
 #include <sys/param.h>
+#include <sys/types.h>
 #include <sys/stat.h>
 #include <errno.h>
 #include <unistd.h>
@@ -49,11 +48,7 @@
 #include "un-namespace.h"
 #include "libc_private.h"
 
-#include <crt_externs.h>
-#define environ (*_NSGetEnviron())
-
-int
-_execvpe(const char *name, char * const argv[], char * const envp[]);
+extern char **environ;
 
 int
 execl(const char *name, const char *arg, ...)
@@ -136,7 +131,9 @@
 }
 
 int
-execv(const char *name, char * const *argv)
+execv(name, argv)
+	const char *name;
+	char * const *argv;
 {
 	(void)_execve(name, argv, environ);
 	return (-1);
@@ -162,7 +159,7 @@
 	eacces = 0;
 
 	/* If it's an absolute or relative path name, it's easy. */
-	if (strchr(name, '/')) {
+	if (index(name, '/')) {
 		bp = name;
 		cur = NULL;
 		goto retry;
@@ -221,28 +218,14 @@
 		case ENOEXEC:
 			for (cnt = 0; argv[cnt]; ++cnt)
 				;
-
-			/*
-			 * cnt may be 0 above; always allocate at least
-			 * 3 entries so that we can at least fit "sh", bp, and
-			 * the NULL terminator.  We can rely on cnt to take into
-			 * account the NULL terminator in all other scenarios,
-			 * as we drop argv[0].
-			 */
-			memp = alloca(MAX(3, cnt + 2) * sizeof(char *));
+			memp = alloca((cnt + 2) * sizeof(char *));
 			if (memp == NULL) {
 				/* errno = ENOMEM; XXX override ENOEXEC? */
 				goto done;
 			}
-			if (cnt > 0) {
-				memp[0] = argv[0];
-				memp[1] = bp;
-				bcopy(argv + 1, memp + 2, cnt * sizeof(char *));
-			} else {
-				memp[0] = "sh";
-				memp[1] = bp;
-				memp[2] = NULL;
-			}
+			memp[0] = "sh";
+			memp[1] = bp;
+			bcopy(argv + 1, memp + 2, cnt * sizeof(char *));
  			(void)_execve(_PATH_BSHELL,
 			    __DECONST(char **, memp), envp);
 			goto done;
@@ -276,9 +259,8 @@
 	}
 	if (eacces)
 		errno = EACCES;
-	else if (cur)
+	else
 		errno = ENOENT;
-	/* else use existing errno from _execve */
 done:
 	return (-1);
 }
@@ -289,7 +271,7 @@
 	return execvPe(name, path, argv, environ);
 }
 
-__private_extern__ int
+int
 _execvpe(const char *name, char * const argv[], char * const envp[])
 {
 	const char *path;