[src/trunk]: src/usr.sbin/makemandb We do need to copy the return value from ...

[abhinav <abhinav%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/6fb2594a91e3
branches:  trunk
changeset: 823679:6fb2594a91e3
user:      abhinav <abhinav%NetBSD.org@localhost>
date:      Tue May 02 13:54:08 2017 +0000

description:
We do need to copy the return value from dirname(3) since there it is a static
buffer and can be overwritten in between. I overzealously removed this in one
of my previous commits.

diffstat:

 usr.sbin/makemandb/makemandb.c |  7 ++++---
 1 files changed, 4 insertions(+), 3 deletions(-)

diffs (30 lines):

diff -r 8096c991a7bd -r 6fb2594a91e3 usr.sbin/makemandb/makemandb.c
--- a/usr.sbin/makemandb/makemandb.c    Tue May 02 08:20:20 2017 +0000
+++ b/usr.sbin/makemandb/makemandb.c    Tue May 02 13:54:08 2017 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: makemandb.c,v 1.53 2017/05/01 06:56:00 abhinav Exp $   */
+/*     $NetBSD: makemandb.c,v 1.54 2017/05/02 13:54:08 abhinav Exp $   */
 /*
  * Copyright (c) 2011 Abhinav Upadhyay <er.abhinav.upadhyay%gmail.com@localhost>
  * Copyright (c) 2011 Kristaps Dzonsons <kristaps%bsd.lv@localhost>
@@ -17,7 +17,7 @@
  */
 
 #include <sys/cdefs.h>
-__RCSID("$NetBSD: makemandb.c,v 1.53 2017/05/01 06:56:00 abhinav Exp $");
+__RCSID("$NetBSD: makemandb.c,v 1.54 2017/05/02 13:54:08 abhinav Exp $");
 
 #include <sys/stat.h>
 #include <sys/types.h>
@@ -450,9 +450,10 @@
        while ((len = getline(&line, &linesize, file)) != -1) {
                /* Replace the new line character at the end of string with '\0' */
                line[len - 1] = '\0';
-               char *pdir = dirname(line);
+               char *pdir = estrdup(dirname(line));
                /* Traverse the man page directories and parse the pages */
                traversedir(pdir, line, db, mp);
+               free(pdir);
        }
        free(line);