patch 8.2.4880: Vim9: misplaced elseif causes invalid memory access
Problem: Vim9: misplaced elseif causes invalid memory access.
Solution: Check cs_idx not to be negative.
diff --git a/src/ex_eval.c b/src/ex_eval.c
index 7b4ac17..f3e2ca2 100644
--- a/src/ex_eval.c
+++ b/src/ex_eval.c
@@ -1124,10 +1124,13 @@
skip = TRUE;
}
- // Variables declared in the previous block can no longer be
- // used. Needs to be done before setting "cs_flags".
- leave_block(cstack);
- enter_block(cstack);
+ if (cstack->cs_idx >= 0)
+ {
+ // Variables declared in the previous block can no longer be
+ // used. Needs to be done before setting "cs_flags".
+ leave_block(cstack);
+ enter_block(cstack);
+ }
// if skipping or the ":if" was TRUE, reset ACTIVE, otherwise set it
if (skip || cstack->cs_flags[cstack->cs_idx] & CSF_TRUE)
diff --git a/src/version.c b/src/version.c
index 5a597a8..848c3e6 100644
--- a/src/version.c
+++ b/src/version.c
@@ -747,6 +747,8 @@
static int included_patches[] =
{ /* Add new patch number below this line */
/**/
+ 4880,
+/**/
4879,
/**/
4878,