patch 9.1.0701: crash with NFA regex engine when searching for composing chars
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>
diff --git a/src/regexp_nfa.c b/src/regexp_nfa.c
index 6db4134..557d0e1 100644
--- a/src/regexp_nfa.c
+++ b/src/regexp_nfa.c
@@ -6525,7 +6525,8 @@
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);