commit 021bda56710d98c09a6b35610a476ab2dd8c58ad
author Bram Moolenaar <Bram@vim.org> Mon Aug 17 21:07:22 2020 +0200
committer Bram Moolenaar <Bram@vim.org> Mon Aug 17 21:07:22 2020 +0200
tree ef1e8f444ad876989fde5d1ae961805642cfa9de
parent 7b22117c4ecf383b6f35acef041773a83ec28220

patch 8.2.1473: items in a list given to :const can still be modified

Problem:    Items in a list given to :const can still be modified.
Solution:   Work like ":lockvar! name" but don't lock referenced items.
            Make locking a blob work.

src/eval.c

diff --git a/src/eval.c b/src/eval.c
index 3c4a8c5..c800139 100644
--- a/src/eval.c
+++ b/src/eval.c
@@ -1218,6 +1218,8 @@
 		semsg(_(e_letwrong), op);
 		return;
 	    }
+	    if (var_check_lock(lp->ll_blob->bv_lock, lp->ll_name, FALSE))
+		return;
 
 	    if (lp->ll_range && rettv->v_type == VAR_BLOB)
 	    {