:./ledger -f $PoC

ASAN:SIGSEGV
=================================================================
==2687==ERROR: AddressSanitizer: SEGV on unknown address 0x000000000038 (pc
0x7f83b0dd9954 bp 0x7fffc19d63b0 sp 0x7fffc19d6350 T0)
    #0 0x7f83b0dd9953 in post_pred /home/karas/gwanyeong/ledger/src/xact.cc:583
    #1 0x7f83b0de13bf in ledger::auto_xact_t::extend_xact(ledger::xact_base_t&,
ledger::parse_context_t&) /home/karas/gwanyeong/ledger/src/xact.cc:667
    #2 0x7f83b0db6066 in ledger::journal_t::extend_xact(ledger::xact_base_t*)
/home/karas/gwanyeong/ledger/src/journal.cc:465
    #3 0x7f83b0dbb405 in ledger::journal_t::add_xact(ledger::xact_t*)
/home/karas/gwanyeong/ledger/src/journal.cc:391
    #4 0x7f83b0da2807 in xact_directive
/home/karas/gwanyeong/ledger/src/textual.cc:701
    #5 0x7f83b0da2807 in read_next_directive
/home/karas/gwanyeong/ledger/src/textual.cc:375
    #6 0x7f83b0da2807 in parse /home/karas/gwanyeong/ledger/src/textual.cc:252
    #7 0x7f83b0da66c2 in
ledger::journal_t::read_textual(ledger::parse_context_stack_t&)
/home/karas/gwanyeong/ledger/src/textual.cc:1995
    #8 0x7f83b0db8ac0 in
ledger::journal_t::read(ledger::parse_context_stack_t&)
/home/karas/gwanyeong/ledger/src/journal.cc:505
    #9 0x7f83b0d51f33 in
ledger::session_t::read_data(std::__cxx11::basic_string<char,
std::char_traits<char>, std::allocator<char> > const&)
/home/karas/gwanyeong/ledger/src/session.cc:171
    #10 0x7f83b0d54565 in ledger::session_t::read_journal_files()
/home/karas/gwanyeong/ledger/src/session.cc:203
    #11 0x42ea99 in main /home/karas/gwanyeong/ledger/src/main.cc:127
    #12 0x7f83afb4082f in __libc_start_main
(/lib/x86_64-linux-gnu/libc.so.6+0x2082f)
    #13 0x42f488 in _start (/home/karas/gwanyeong/ledger/ledger+0x42f488)
AddressSanitizer can not provide additional info.
SUMMARY: AddressSanitizer: SEGV /home/karas/gwanyeong/ledger/src/xact.cc:583
post_pred
==2687==ABORTING

Null pointer dereference in post_pred (BZ#1219) #1219

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