vim-patch:8.2.1969: Vim9: map() may change the list or dict item type

Problem:    Vim9: map() may change the list or dict item type.
Solution:   Add mapnew().

https://github.com/vim/vim/commit/ea696852e7abcdebaf7f17a7f23dc90df1f5e2ed

Co-authored-by: Bram Moolenaar <Bram@vim.org>

1 files changed, 5 insertions, 8 deletions

diff --git a/src/nvim/eval/typval.c b/src/nvim/eval/typval.c
index abe31aab75..5b977e93c9 100644
--- a/src/nvim/eval/typval.c
+++ b/src/nvim/eval/typval.c
@@ -3249,22 +3249,19 @@ void tv_blob_alloc_ret(typval_T *const ret_tv)
 ///
 /// @param[in]  from  Blob object to copy from.
 /// @param[out]  to  Blob object to copy to.
-void tv_blob_copy(typval_T *const from, typval_T *const to)
-  FUNC_ATTR_NONNULL_ALL
+void tv_blob_copy(blob_T *const from, typval_T *const to)
+  FUNC_ATTR_NONNULL_ARG(2)
 {
-  assert(from->v_type == VAR_BLOB);
-
   to->v_type = VAR_BLOB;
   to->v_lock = VAR_UNLOCKED;
-  if (from->vval.v_blob == NULL) {
+  if (from == NULL) {
     to->vval.v_blob = NULL;
   } else {
     tv_blob_alloc_ret(to);
-    int len = from->vval.v_blob->bv_ga.ga_len;
+    int len = from->bv_ga.ga_len;
 
     if (len > 0) {
-      to->vval.v_blob->bv_ga.ga_data
-        = xmemdup(from->vval.v_blob->bv_ga.ga_data, (size_t)len);
+      to->vval.v_blob->bv_ga.ga_data = xmemdup(from->bv_ga.ga_data, (size_t)len);
     }
     to->vval.v_blob->bv_ga.ga_len = len;
     to->vval.v_blob->bv_ga.ga_maxlen = len;