patch 8.2.4309: Vim9: crash when using a partial in the wrong context
Problem: Vim9: crash when using a partial in the wrong context.
Solution: Don't use an NULL outer pointer. (closes #9706)
diff --git a/src/testdir/test_vim9_func.vim b/src/testdir/test_vim9_func.vim
index 55297cb..e781a21 100644
--- a/src/testdir/test_vim9_func.vim
+++ b/src/testdir/test_vim9_func.vim
@@ -3125,6 +3125,35 @@
v9.CheckScriptFailure(lines, 'E1235:')
enddef
+" Using "idx" from a legacy global function does not work.
+" This caused a crash when called from legacy context.
+func Test_partial_call_fails()
+ let lines =<< trim END
+ vim9script
+
+ var l = ['a', 'b', 'c']
+ def Iter(container: any): any
+ var idx = -1
+ var obj = {state: container}
+ def g:__NextItem__(self: dict<any>): any
+ ++idx
+ return self.state[idx]
+ enddef
+ obj.__next__ = function('g:__NextItem__', [obj])
+ return obj
+ enddef
+
+ var it = Iter(l)
+ echo it.__next__()
+ END
+ call writefile(lines, 'XpartialCall')
+ try
+ source XpartialCall
+ catch /E1248:/
+ endtry
+ call delete('XpartialCall')
+endfunc
+
def Test_cmd_modifier()
tab echo '0'
v9.CheckDefFailure(['5tab echo 3'], 'E16:')