Created attachment 1427 [details] proposed fix procmime_decode_content() opens file with get_tmpfile_in_dir(), but uses procmime_fclose() to close it which calls funlockfile() for it too. It is undefined what happens - and some c-libraries crash, or abort with assertation failure. See attached patch to fix it.
Looks correct to me. I wonder if it might be an idea to add a wrapper for procmime_get_tmpfile_in_dir()
Changes related to this bug have been committed. Please check latest Git and update the bug accordingly. You can also get the patch from: http://git.claws-mail.org/ ++ ChangeLog 2014-09-12 08:13:02.738300504 +0200 http://git.claws-mail.org/?p=claws.git;a=commitdiff;h=d013b054b54997cd892863712c024379f86d2ea0 Merge: c2ff8a9 edb27a1 Author: Colin Leroy <colin@colino.net> Date: Fri Sep 12 08:13:02 2014 +0200 Merge branch 'master' of file:///home/git/claws http://git.claws-mail.org/?p=claws.git;a=commitdiff;h=edb27a1a701506fab0d12bce823f59bf302e4f00 Author: Paul <paul@claws-mail.org> Date: Fri Sep 12 07:12:44 2014 +0100 fix bug 3265, 'procmime.c: unbalanced flockfile() / funlockfile()' Patch by Timo Teräs