On 2012/09/24 03:27, Garrett Cooper wrote:
On Sun, Sep 23, 2012 at 3:52 AM, Konstantin Belousov
<kostik...@gmail.com> wrote:
On Sun, Sep 23, 2012 at 08:38:06AM +0000, Kevin Lo wrote:
Author: kevlo
Date: Sun Sep 23 08:38:06 2012
New Revision: 240850
URL: http://svn.freebsd.org/changeset/base/240850
Log:
Avoid NULL dereference
Modified:
head/lib/libstand/nfs.c
...
I do not see how this change is useful. libstand' Free() function handles
NULL parameter fine, as well as all other free(3) implementations I am
aware of.
+1. free(3) should silently ignore NULL parameters passed into it.
Well, The patch is harmless. I suppose I could argue it is a safety belt
against free(NULL) should be silently ignored.
I have no problem changing it back, but there are two other places where
the same comment could apply.
Index: lib/libstand/nfs.c
===================================================================
--- lib/libstand/nfs.c (revision 240879)
+++ lib/libstand/nfs.c (working copy)
@@ -606,10 +606,8 @@ nfs_open(const char *upath, struct open_file *f)
error = 0;
out:
- if (newfd)
- free(newfd);
- if (path)
- free(path);
+ free(newfd);
+ free(path);
#else
currfd->iodesc = desc;
@@ -1256,10 +1254,8 @@ nfs_open(const char *upath, struct open_file *f)
error = 0;
out:
- if (newfd)
- free(newfd);
- if (path)
- free(path);
+ free(newfd);
+ free(path);
#else
currfd->iodesc = desc;
Thanks,
Garrett
Kevin
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