patch 8.2.1749: Vim9: crash when closure fails in nested function
Problem: Vim9: crash when closure fails in nested function.
Solution: Handle function returns before dereferencing remaining closures.
(closes #7008)
diff --git a/src/testdir/test_vim9_func.vim b/src/testdir/test_vim9_func.vim
index a6fba4c..f50ec85 100644
--- a/src/testdir/test_vim9_func.vim
+++ b/src/testdir/test_vim9_func.vim
@@ -1370,6 +1370,20 @@
CheckScriptSuccess(lines)
enddef
+def Test_nested_closure_fails()
+ let lines =<< trim END
+ vim9script
+ def FuncA()
+ FuncB(0)
+ enddef
+ def FuncB(n: number): list<string>
+ return map([0], {_, v -> n})
+ enddef
+ FuncA()
+ END
+ CheckScriptFailure(lines, 'E1012:')
+enddef
+
def Test_sort_return_type()
let res: list<number>
res = [1, 2, 3]->sort()