commit ef2c325f5e3c437b722bb96bf369ba2a5c541163
author Bram Moolenaar <Bram@vim.org> Fri Nov 25 16:31:51 2022 +0000
committer Bram Moolenaar <Bram@vim.org> Fri Nov 25 16:31:51 2022 +0000
tree dc85f0dc98dce1937b459d8d3882473f25db03c3
parent c1cf4c91072f91b6b8dd636627a4ddf6f4b21f16

patch 9.0.0949: crash when unletting a variable while listing variables

Problem:    Crash when unletting a variable while listing variables.
Solution:   Disallow changing a hashtable while going over the entries.
            (closes #11435)

src/syntax.c

diff --git a/src/syntax.c b/src/syntax.c
index 468dee0..6570e9e 100644
--- a/src/syntax.c
+++ b/src/syntax.c
@@ -4339,7 +4339,7 @@
 		    if (kp_prev == NULL)
 		    {
 			if (kp_next == NULL)
-			    hash_remove(ht, hi);
+			    hash_remove(ht, hi, "syntax clear keyword");
 			else
 			    hi->hi_key = KE2HIKEY(kp_next);
 		    }