Program terminated with signal SIGSEGV, Segmentation fault.
#0  mutt_pattern_exec (pat=pat@entry=0x565506a20750, flags=flags@entry=MUTT_MATCH_FULL_ADDRESS, ctx=ctx@entry=0x565506ab2a80, h=h@entry=0x5655079acd60, cache=cache@entry=0x7ffc1b6515e0) at pattern.c:1715
1715              set_pattern_cache_value(cache_entry, match_user(pat->alladdr, h->env->from, NULL));
(gdb) p pat->alladdr
$1 = false
(gdb) p h->env->from
Cannot access memory at address 0x49
(gdb) p h->env
$2 = (struct Envelope *) 0x41
(gdb) p *h
$3 = {security = 0, mime = false, flagged = false, tagged = false, deleted = true, purge = false, quasi_deleted = false, changed = true, attach_del = false, old = false, read = false, expired = false, superseded = false,
  replied = false, subject_changed = false, threaded = false, display_subject = false, recip_valid = false, active = false, trash = false, xlabel_changed = false, zhours = 0, zminutes = 0, zoccident = false, searched = false,
  matched = false, attach_valid = false, collapsed = false, limited = false, num_hidden = 94923199794608, recipient = -22496, pair = 22101, date_sent = 94923184554256, received = 94923184554256, offset = 33, lines = 112346032,
  index = 22101, msgno = 127585616, virtual = 22101, score = 0, env = 0x41, content = 0x1b0, path = 0x0, tree = 0x5655079ace10 "\260", thread = 0x5655079acf30, attach_total = -12976, refno = 22101, tags = {stqh_first = 0x565506b24820,
    stqh_last = 0x565506b24820}, data = 0x21, free_cb = 0x565506b25040, maildir_flags = 0x5655079acdb0 "\260\001"}