patch 8.2.0033: crash when make_extmatch() runs out of memory
Problem: Crash when make_extmatch() runs out of memory.
Solution: Check for NULL. (Dominique Pelle, closs #5392)
diff --git a/src/regexp_nfa.c b/src/regexp_nfa.c
index fb512f9..a288ea4 100644
--- a/src/regexp_nfa.c
+++ b/src/regexp_nfa.c
@@ -7070,6 +7070,8 @@
{
cleanup_zsubexpr();
re_extmatch_out = make_extmatch();
+ if (re_extmatch_out == NULL)
+ return 0;
// Loop over \z1, \z2, etc. There is no \z0.
for (i = 1; i < subs.synt.in_use; i++)
{