dovecot-2.2: maildir: Fixed crash in some rare situations.

[dovecot at dovecot.org]

details:   http://hg.dovecot.org/dovecot-2.2/rev/f33bacb03cc2
changeset: 16290:f33bacb03cc2
user:      Timo Sirainen <tss at iki.fi>
date:      Tue Apr 16 15:54:05 2013 +0300
description:
maildir: Fixed crash in some rare situations.

diffstat:

 src/lib-storage/index/maildir/maildir-util.c |  3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)

diffs (13 lines):

diff -r 9a5b132b6832 -r f33bacb03cc2 src/lib-storage/index/maildir/maildir-util.c
--- a/src/lib-storage/index/maildir/maildir-util.c	Mon Apr 15 21:40:35 2013 +0300
+++ b/src/lib-storage/index/maildir/maildir-util.c	Tue Apr 16 15:54:05 2013 +0300
@@ -87,6 +87,9 @@
 		fname = maildir_filename_guess(mbox, uid, fname,
 					       &flags, &have_flags);
 	}
+	/* make a copy, just in case callback refreshes uidlist and
+	   the pointer becomes invalid. */
+	fname = t_strdup(fname);
 
 	ret = 0;
 	if ((flags & MAILDIR_UIDLIST_REC_FLAG_NEW_DIR) != 0) {