[aspell-devel] Aspell core dump

[James Lee]

Aspell 0.60.1 is frequently and consistently dumping core.  Example: I
create a file with the single word "webserver" then check it, first I ask
to correct to "web-server", then because aspell although having offered
me the choice of that word asks again for a correction to the correction,
I now select "web server" and it dumps core.  This is just a simple
example, the program crashes often and it seems related to words with
hyphens.


The problem is caused by:

bool WritableReplDict::lookup(ParmString word, const SensitiveCompare *
c, WordEntry & o) const

line 589 in writable.cpp "returning" a null value in o.


Stack below but note this is only the manifestation of the problem.  The
real problem is the failure of the lookup, line 696 writable.cpp.
get_vector() subtracts from the zero and gives the invalid address
0xfffffff2.

(gdb) where
#0  0xdfb73e85 in std::vector<char const*, std::allocator<char const*>
>::begin (this=0xfffffff2) at bits/stl_vector.h:322
#1  0xdfb7bf91 in acommon::Vector<char const*>::pbegin (this=0xfffffff2)
    at vector.hpp:44
#2  0xdfb09598 in repl_init (tmp=0xfffffff2, address@hidden)
    at modules/speller/default/writable.cpp:675
#3  0xdfb096f0 in (anonymous namespace)::WritableReplDict::repl_lookup (
    this=0x8094f58, address@hidden, address@hidden)
    at modules/speller/default/writable.cpp:701
#4  0xdfafcd5a in (anonymous namespace)::Working::add_nearmiss (
    this=0x80469c0, i={_M_current = 0x808c878}, address@hidden,
    sl=0x8097a3d "WBSF", w_score=-1, sl_score=0, count=true)
    at modules/speller/default/suggest.cpp:525
#5  0xdfafd4e0 in (anonymous namespace)::Working::add_sound
(this=0x80469c0,
    i={_M_current = 0x808c878}, sw=0x8367de4, sl=0x8097a3d "WBSF",
score=0)
    at modules/speller/default/suggest.cpp:654
#6  0xdfafd823 in (anonymous namespace)::Working::try_scan
(this=0x80469c0)
    at modules/speller/default/suggest.cpp:709
#7  0xdfafc211 in (anonymous namespace)::Working::get_suggestions (
    this=0x80469c0, address@hidden) at
modules/speller/default/suggest.cpp:326
#8  0xdfb00483 in (anonymous namespace)::SuggestImpl::suggest (
    this=0x8097ee0, word=0x8368538 "webserver")
    at modules/speller/default/suggest.cpp:1309
#9  0xdfb0b85f in aspeller::SpellerImpl::store_replacement
(this=0x8092838,
    address@hidden, address@hidden, memory=false)
    at modules/speller/default/speller_impl.cpp:79
#10 0xdfb0bc0d in aspeller::SpellerImpl::store_replacement
(this=0x8092838,
    address@hidden, address@hidden, memory=true)
    at modules/speller/default/speller_impl.cpp:105
#11 0xdfb0b792 in aspeller::SpellerImpl::store_replacement
(this=0x8092838,
    mis={str = 0x8366bc0 "web-server", size = 10}, cor=
      {str = 0x8366ab0 "Webster", size = 7})
    at modules/speller/default/speller_impl.cpp:69
#12 0xdfb337b1 in aspell_speller_store_replacement (ths=0x8092838,
    mis=0x8098d5b "web-server, the JSP server and servlet engine,\n",
    mis_size=10, cor=0x8097870 "Webster", cor_size=7) at
lib/speller-c.cpp:160
#13 0x0806ec37 in CheckerString::replace (this=0x809a618, repl=
      {str_ = 0x8097870 "Webster", size_ = 7}) at
prog/checker_string.cpp:130
#14 0x080666c0 in check () at prog/aspell.cpp:1136