vfolder-from-query segfaults

[jindraj]

Expected Behaviour

Create virtual mailbox from notmuch query

Actual Behaviour

neomutt segfaults

If NeoMutt crashed, did your OS create a 'coredump' file?

Steps to Reproduce

build neomutt from source (master), last working commit d75a44c
neomutt segfaults right after you confirm notmuch query with Enter

How often does this happen?

• Always

When did it start to happen?

• When I upgraded
  I've been using 8f5eb56, then I upgraded to latest commit yesterday evening

NeoMutt Version

I'm back to last known working version

NeoMutt 20180716-1028-d75a44
Copyright (C) 1996-2016 Michael R. Elkins and others.
NeoMutt comes with ABSOLUTELY NO WARRANTY; for details type 'neomutt -vv'.
NeoMutt is free software, and you are welcome to redistribute it
under certain conditions; type 'neomutt -vv' for details.

System: Darwin 18.2.0 (x86_64)
ncurses: ncurses 5.7.20081102 (compiled with 5.7.20081102)
libiconv: 1.11
libidn: 1.35 (compiled with 1.35)
hcache backends: tokyocabinet, lmdb

Compiler:
Apple LLVM version 10.0.0 (clang-1000.10.44.4)
Target: x86_64-apple-darwin18.2.0
Thread model: posix
InstalledDir: /Library/Developer/CommandLineTools/usr/bin

Configure options: --prefix=/usr/local/Cellar/neomutt/HEAD-d75a44c --gss --lmdb --notmuch --sasl --tokyocabinet --with-ssl=/usr/local/opt/openssl --with-ui=ncurses

Compilation CFLAGS: -g -O2 -std=c99 -D_ALL_SOURCE=1 -D_GNU_SOURCE=1 -D__EXTENSIONS__ -I/usr/local/Cellar/neomutt/HEAD-d75a44c/include -DNCURSES_WIDECHAR -I/usr/local/opt/openssl/include

Default options:
  +attach_headers_color +compose_to_sender +compress +cond_date +debug
  +encrypt_to_self +forgotten_attachments +forwref +ifdef +imap +index_color
  +initials +limit_current_thread +multiple_fcc +nested_if +new_mail +nntp +pop
  +progress +quasi_delete +regcomp +reply_with_xorig +sensible_browser +sidebar
  +skip_quoted +smtp +status_color +timeout +tls_sni +trash

Compile options:
  +bkgdset +color +curs_set +fcntl -flock -fmemopen +futimens +getaddrinfo
  -gnutls -gpgme +gss +hcache -homespool +idn -inotify -locales_hack -lua +meta
  -mixmaster +nls +notmuch +openssl +pgp +sasl +smime +start_color
  +sun_attachment +typeahead
MAILPATH="/var/mail"
PKGDATADIR="/usr/local/Cellar/neomutt/HEAD-d75a44c/share/neomutt"
SENDMAIL="/usr/sbin/sendmail"
SYSCONFDIR="/usr/local/Cellar/neomutt/HEAD-d75a44c/etc"

To learn more about NeoMutt, visit: https://neomutt.org
If you find a bug in NeoMutt, please raise an issue at:
    https://github.com/neomutt/neomutt/issues
or send an email to: <neomutt-devel@neomutt.org>

Extra Info

• Operating System and its version
  MacOS Mojave 10.14.2
• Were you using multiple copies of NeoMutt at once?
  No
• Were you using 'screen' or 'tmux'?
  No
• Is your email local (maildir) or remote (IMAP)?
  maildir synced by gmailieer and notmuch