commit 32e351179eacfc84f64cd5029e221582d400bb38
author Bram Moolenaar <Bram@vim.org> Thu May 14 22:41:15 2020 +0200
committer Bram Moolenaar <Bram@vim.org> Thu May 14 22:41:15 2020 +0200
tree f82085603b8f50db86eed7c2d39f9922aa35eebd
parent e06a28f5e30f439545ac125d54ffc4e6bd6daada

patch 8.2.0753: Vim9: expressions are evaluated in the discovery phase

Problem:    Vim9: expressions are evaluated in the discovery phase.
Solution:   Bail out if an expression is not a constant.  Require a type for
            declared constants.

src/ex_eval.c

diff --git a/src/ex_eval.c b/src/ex_eval.c
index 4aa2658..f725343 100644
--- a/src/ex_eval.c
+++ b/src/ex_eval.c
@@ -879,7 +879,8 @@
 {
     typval_T	tv;
 
-    if (eval0(eap->arg, &tv, &eap->nextcmd, !eap->skip) == OK)
+    if (eval0(eap->arg, &tv, &eap->nextcmd, eap->skip ? 0 : EVAL_EVALUATE)
+									 == OK)
 	clear_tv(&tv);
 }