patch 8.2.0061: the execute stack can grow big and never shrinks
Problem: The execute stack can grow big and never shrinks.
Solution: Reduce the size in gargage collect.
diff --git a/src/eval.c b/src/eval.c
index c03372d..739c73c 100644
--- a/src/eval.c
+++ b/src/eval.c
@@ -3857,6 +3857,30 @@
garbage_collect_at_exit = FALSE;
}
+ // The execution stack can grow big, limit the size.
+ if (exestack.ga_maxlen - exestack.ga_len > 500)
+ {
+ size_t new_len;
+ char_u *pp;
+ int n;
+
+ // Keep 150% of the current size, with a minimum of the growth size.
+ n = exestack.ga_len / 2;
+ if (n < exestack.ga_growsize)
+ n = exestack.ga_growsize;
+
+ // Don't make it bigger though.
+ if (exestack.ga_len + n < exestack.ga_maxlen)
+ {
+ new_len = exestack.ga_itemsize * (exestack.ga_len + n);
+ pp = vim_realloc(exestack.ga_data, new_len);
+ if (pp == NULL)
+ return FAIL;
+ exestack.ga_maxlen = exestack.ga_len + n;
+ exestack.ga_data = pp;
+ }
+ }
+
// We advance by two because we add one for items referenced through
// previous_funccal.
copyID = get_copyID();