Fix a one-byte overrun.

PR:		28472
Submitted by:	David Xu <davidx@viasoft.com.cn>
Obtained from:	OpenBSD

2 files changed, 2 insertions, 2 deletions

diff --git a/lib/libc/gen/basename.c b/lib/libc/gen/basename.c
index b68ef3f..09998cf 100644
--- a/lib/libc/gen/basename.c
+++ b/lib/libc/gen/basename.c
@@ -66,7 +66,7 @@ basename(path)
 	while (startp > path && *(startp - 1) != '/')
 		startp--;
 
-	if (endp - startp + 1 > sizeof(bname)) {
+	if (endp - startp + 2 > sizeof(bname)) {
 		errno = ENAMETOOLONG;
 		return(NULL);
 	}
diff --git a/lib/libc/gen/dirname.c b/lib/libc/gen/dirname.c
index 5f6019e..8bc9186 100644
--- a/lib/libc/gen/dirname.c
+++ b/lib/libc/gen/dirname.c
@@ -69,7 +69,7 @@ dirname(path)
 		} while (endp > path && *endp == '/');
 	}
 
-	if (endp - path + 1 > sizeof(bname)) {
+	if (endp - path + 2 > sizeof(bname)) {
 		errno = ENAMETOOLONG;
 		return(NULL);
 	}