diff options
Diffstat (limited to 'test')
| -rw-r--r-- | test/functional/eval/let_spec.lua | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/test/functional/eval/let_spec.lua b/test/functional/eval/let_spec.lua index c3ab3cc367..1bd3405698 100644 --- a/test/functional/eval/let_spec.lua +++ b/test/functional/eval/let_spec.lua @@ -4,6 +4,7 @@ local eq = helpers.eq local clear = helpers.clear local meths = helpers.meths local redir_exec = helpers.redir_exec +local source = helpers.source before_each(clear) @@ -19,4 +20,26 @@ describe(':let command', function() eq('\ng:["v"][0] #0', redir_exec('let g:["v"][0]')) eq('\n{"g:"}["v"][0] #0', redir_exec('let {"g:"}["v"][0]')) end) + + it(":unlet self-referencing node in a List graph #6070", function() + -- :unlet-ing a self-referencing List must not allow GC on indirectly + -- referenced in-scope Lists. Before #6070 this caused use-after-free. + source([=[ + let [l1, l2] = [[], []] + echo 'l1:' . id(l1) + echo 'l2:' . id(l2) + echo '' + let [l3, l4] = [[], []] + call add(l4, l4) + call add(l4, l3) + call add(l3, 1) + call add(l2, l2) + call add(l2, l1) + call add(l1, 1) + unlet l2 + unlet l4 + call garbagecollect(1) + call feedkeys(":\e:echo l1 l3\n:echo 42\n:cq\n", "t") + ]=]) + end) end) |