1.19 segfault in createFilter()

[michihenning]

I'm getting segfaults with leveldb 1.19. This is in code that has been working perfectly for more than a year with 1.18. The segfault happens some time during shutdown and looks like a race condition. Valgrind has this to say:

http://pastebin.ubuntu.com/23459626/

gdb shows this stack trace:

http://pastebin.ubuntu.com/23459624/

I can produce the segfault on arm64, amd64, powerpc, s390x, ppc64el, armhf, and i386 simply by changing from libleveldb.so.1.18 to libleveldb.so.1.19

More details here: https://bugs.launchpad.net/ubuntu/+source/thumbnailer/+bug/1640326

[michihenning]

Dang, wrong bug tracker :-(