patch 8.2.0033: crash when make_extmatch() runs out of memory Commit: https://github.com/vim/vim/commit/7c77b3496710f1be3232cfdc7f6812347fbd914a Author: Bram Moolenaar <Bram@vim.org> Date: Sun Dec 22 19:40:40 2019 +0100 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 https://github.com/vim/vim/issues/5392)

--- a/src/regexp_nfa.c
+++ b/src/regexp_nfa.c
@@ -7070,6 +7070,8 @@ nfa_regtry(
     {
 	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++)
 	{