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patch 9.1.0701: crash with NFA regex engine when searching for composing chars

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Problem:  crash with NFA regex engine when searching for composing chars
          (SuyueGuo)
Solution: When there is no composing character, break out of the loop
          and check that out1 state is not null

fixes: #15583

Signed-off-by: Christian Brabandt <cb@256bit.org>
This commit is contained in:
Christian Brabandt
2024-08-28 23:17:52 +02:00
parent 1c815b54bb
commit c3a02d78bd
4 changed files with 9 additions and 1 deletions
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3
src/regexp_nfa.c
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@@ -6525,7 +6525,8 @@ nfa_regmatch(
else
result = FAIL;
if (t->state->out->out1->c == NFA_END_COMPOSING)
if (t->state->out->out1 != NULL
&& t->state->out->out1->c == NFA_END_COMPOSING)
{
end = t->state->out->out1;
ADD_STATE_IF_MATCH(end);