From 998611f369590e64db3712e66fff07b6c537ce74 Mon Sep 17 00:00:00 2001
From: bde <bde@FreeBSD.org>
Date: Mon, 18 Nov 1996 19:24:47 +0000
Subject: [PATCH] Fixed execvp() of an empty pathname to fail POSIXly. 
 Previously it attempted to exec the components of $PATH and it usually set
 errno to the wrong value.

Found by:	NIST PCTS
---
 lib/libc/gen/exec.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/lib/libc/gen/exec.c b/lib/libc/gen/exec.c
index 2410ce974492..72b6db43b1da 100644
--- a/lib/libc/gen/exec.c
+++ b/lib/libc/gen/exec.c
@@ -200,6 +200,12 @@ execvp(name, argv)
 	}
 	bp = buf;
 
+	/* If it's an empty path name, fail in the usual POSIX way. */
+	if (*name == '\0') {
+		errno = ENOENT;
+		return (-1);
+	}
+
 	/* Get the path we're searching. */
 	if (!(path = getenv("PATH")))
 		path = _PATH_DEFPATH;