patch 8.2.0537: Vim9: no check for sandbox when setting v:varv8.2.0537

Problem:    Vim9: no check for sandbox when setting v:var.
Solution:   Check for sandbox.

1 files changed, 11 insertions, 0 deletions

diff --git a/src/evalvars.c b/src/evalvars.c
index 8af80ec0af..d32b76a87b 100644
--- a/src/evalvars.c
+++ b/src/evalvars.c
@@ -1978,6 +1978,17 @@ set_vim_var_tv(int idx, typval_T *tv)
 	clear_tv(tv);
 	return FAIL;
     }
+    // VV_RO is also checked when compiling, but let's check here as well.
+    if (vimvars[idx].vv_flags & VV_RO)
+    {
+	semsg(_(e_readonlyvar), vimvars[idx].vv_name);
+	return FAIL;
+    }
+    if (sandbox && (vimvars[idx].vv_flags & VV_RO_SBX))
+    {
+	semsg(_(e_readonlysbx), vimvars[idx].vv_name);
+	return FAIL;
+    }
     clear_tv(&vimvars[idx].vv_di.di_tv);
     vimvars[idx].vv_di.di_tv = *tv;
     return OK;