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087acd79f8
Regression test coverage for #6070.
46 lines
1.3 KiB
Lua
46 lines
1.3 KiB
Lua
local helpers = require('test.functional.helpers')(after_each)
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local eq = helpers.eq
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local clear = helpers.clear
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local meths = helpers.meths
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local redir_exec = helpers.redir_exec
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local source = helpers.source
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before_each(clear)
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describe(':let command', function()
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it('correctly lists variables with curly-braces', function()
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meths.set_var('v', {0})
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eq('\nv [0]', redir_exec('let {"v"}'))
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end)
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it('correctly lists variables with subscript', function()
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meths.set_var('v', {0})
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eq('\nv[0] #0', redir_exec('let v[0]'))
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eq('\ng:["v"][0] #0', redir_exec('let g:["v"][0]'))
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eq('\n{"g:"}["v"][0] #0', redir_exec('let {"g:"}["v"][0]'))
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end)
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it(":unlet self-referencing node in a List graph #6070", function()
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-- :unlet-ing a self-referencing List must not allow GC on indirectly
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-- referenced in-scope Lists. Before #6070 this caused use-after-free.
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source([=[
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let [l1, l2] = [[], []]
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echo 'l1:' . id(l1)
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echo 'l2:' . id(l2)
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echo ''
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let [l3, l4] = [[], []]
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call add(l4, l4)
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call add(l4, l3)
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call add(l3, 1)
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call add(l2, l2)
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call add(l2, l1)
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call add(l1, 1)
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unlet l2
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unlet l4
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call garbagecollect(1)
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call feedkeys(":\e:echo l1 l3\n:echo 42\n:cq\n", "t")
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]=])
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end)
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end)
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