patch 8.2.4390: Vim9: list from declaration with inferred type not set
Problem: Vim9: list from declaration with inferred type does not set the
type on the value.
Solution: When inferring the type in a variable declaration also set the
type of the list or dictionary. (closes #9705) Do not set the
type when the member is "any".
diff --git a/src/testdir/test_vim9_assign.vim b/src/testdir/test_vim9_assign.vim
index 8a00ceb..9c988c9 100644
--- a/src/testdir/test_vim9_assign.vim
+++ b/src/testdir/test_vim9_assign.vim
@@ -1885,6 +1885,19 @@
v9.CheckDefFailure(['const foo: number'], 'E1021:')
enddef
+def Test_var_declaration_inferred()
+ # check that type is set on the list so that extend() fails
+ var lines =<< trim END
+ vim9script
+ def GetList(): list<number>
+ var l = [1, 2, 3]
+ return l
+ enddef
+ echo GetList()->extend(['x'])
+ END
+ v9.CheckScriptFailure(lines, 'E1013:', 6)
+enddef
+
def Test_script_local_in_legacy()
# OK to define script-local later but before compiling
var lines =<< trim END