From: Kevin Ryde <user42@zip.com.au>
Subject: readlink, getcwd memory leaks
Date: Fri, 26 Mar 2004 06:12:16 +1000 [thread overview]
Message-ID: <877jx8hejj.fsf@zip.com.au> (raw)
[-- Attachment #1: Type: text/plain, Size: 325 bytes --]
* filesys.c (scm_getcwd, scm_readlink): Avoid memory leak on errors.
Unbounded growth can be seen with
(while #t (false-if-exception (readlink "nosuchfile")))
and
(mkdir "somedir")
(chdir "somedir")
(rmdir "../somedir")
(while #t (false-if-exception (getcwd)))
This will be for the 1.6 branch too I think.
[-- Attachment #2: filesys.c.leak.diff --]
[-- Type: text/plain, Size: 999 bytes --]
--- filesys.c.~1.119.~ 2003-05-30 08:40:07.000000000 +1000
+++ filesys.c 2004-03-25 14:16:28.000000000 +1000
@@ -1,4 +1,4 @@
-/* Copyright (C) 1996,1997,1998,1999,2000,2001, 2002 Free Software Foundation, Inc.
+/* Copyright (C) 1996,1997,1998,1999,2000,2001, 2002, 2004 Free Software Foundation, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
@@ -929,7 +929,12 @@
wd = scm_malloc (size);
}
if (rv == 0)
- SCM_SYSERROR;
+ {
+ int save_errno = errno;
+ free (wd);
+ errno = save_errno;
+ SCM_SYSERROR;
+ }
result = scm_mem2string (wd, strlen (wd));
free (wd);
return result;
@@ -1349,7 +1354,12 @@
buf = scm_malloc (size);
}
if (rv == -1)
- SCM_SYSERROR;
+ {
+ int save_errno = errno;
+ free (buf);
+ errno = save_errno;
+ SCM_SYSERROR;
+ }
result = scm_mem2string (buf, rv);
free (buf);
return result;
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next reply other threads:[~2004-03-25 20:12 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-03-25 20:12 Kevin Ryde [this message]
2004-04-24 22:19 ` readlink, getcwd memory leaks Marius Vollmer
2004-04-24 22:51 ` Kevin Ryde
2004-04-24 23:42 ` Marius Vollmer
2004-04-25 8:16 ` Dirk Herrmann
2004-04-25 18:38 ` Rob Browning
2004-04-26 19:08 ` Marius Vollmer
2004-04-29 21:14 ` Stephen Compall
2004-04-28 0:24 ` Kevin Ryde
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