patch 8.2.2692: Vim9: locked script variable can be changed
Problem: Vim9: locked script variable can be changed.
Solution: Check for locked value. (closes #8031)
diff --git a/src/vim9execute.c b/src/vim9execute.c
index 9b7f87b..69254be 100644
--- a/src/vim9execute.c
+++ b/src/vim9execute.c
@@ -1958,6 +1958,13 @@
if (sv == NULL)
goto failed;
--ectx.ec_stack.ga_len;
+
+ // "const" and "final" are checked at compile time, locking
+ // the value needs to be checked here.
+ SOURCING_LNUM = iptr->isn_lnum;
+ if (value_check_lock(sv->sv_tv->v_lock, sv->sv_name, FALSE))
+ goto on_error;
+
clear_tv(sv->sv_tv);
*sv->sv_tv = *STACK_TV_BOT(0);
}