[dovecot/core] c05b4a: imapc: Fix local state if mailbox is empty after r...

[GitHub]

  Branch: refs/heads/master
  Home:   https://github.com/dovecot/core
  Commit: c05b4ac76c4c6012958f1cc37e2fccf7a7d31c33
      https://github.com/dovecot/core/commit/c05b4ac76c4c6012958f1cc37e2fccf7a7d31c33
  Author: Timo Sirainen <timo.sirainen at dovecot.fi>
  Date:   2018-03-28 (Wed, 28 Mar 2018)

  Changed paths:
    M src/lib-storage/index/imapc/imapc-mailbox.c

  Log Message:
  -----------
  imapc: Fix local state if mailbox is empty after reconnection

If local indexes had more than 0 mails, but after reconnection the remote
IMAP server replied with "* 0 EXISTS", the mails in local index weren't
expunged. This could have resulted in:

Panic: file imapc-sync.c: line 328 (imapc_initial_sync_check): assertion failed: (mail_index_is_expunged(view, lseq) || seq_range_exists(&ctx->mbox->delayed_expunged_uids, luid))


  Commit: f2e3e00d97e9095d79837bd8f482792eae0b531d
      https://github.com/dovecot/core/commit/f2e3e00d97e9095d79837bd8f482792eae0b531d
  Author: Bill Cole <github-20160324 at billmail.scconsult.com>
  Date:   2018-03-28 (Wed, 28 Mar 2018)

  Changed paths:
    M m4/arc4random.m4

  Log Message:
  -----------
  Fix arc4random build checks

The configure script checks for arc4random() but the actual code uses
arc4random_buf(). This breaks for FreeBSD <8.0 and MacOS X <10.7, which
have the former but not the latter. This change (and an autoreconf run)
solves the problem at the cost of not using the available ARC4
implementation.


Compare: https://github.com/dovecot/core/compare/5522b8b3d3ed...f2e3e00d97e9