patch 9.0.1050: using freed memory when assigning to variable twice
Problem: Using freed memory when assigning to variable twice.
Solution: Make copy of the list type. (closes #11691)
diff --git a/src/testdir/test_vim9_script.vim b/src/testdir/test_vim9_script.vim
index b6e1a89..c489ae5 100644
--- a/src/testdir/test_vim9_script.vim
+++ b/src/testdir/test_vim9_script.vim
@@ -4519,6 +4519,36 @@
endif
enddef
+def Test_free_type_before_use()
+ # this rather complicated script was freeing a type before using it
+ var lines =<< trim END
+ vim9script
+
+ def Scan(rel: list<dict<any>>): func(func(dict<any>))
+ return (Emit: func(dict<any>)) => {
+ for t in rel
+ Emit(t)
+ endfor
+ }
+ enddef
+
+ def Build(Cont: func(func(dict<any>))): list<dict<any>>
+ var rel: list<dict<any>> = []
+ Cont((t) => {
+ add(rel, t)
+ })
+ return rel
+ enddef
+
+ var R = [{A: 0}]
+ var result = Scan(R)->Build()
+ result = Scan(R)->Build()
+
+ assert_equal(R, result)
+ END
+ v9.CheckScriptSuccess(lines)
+enddef
+
" Keep this last, it messes up highlighting.
def Test_substitute_cmd()
new