> Since this doesn't seem to have been caught yet, I'll point it out again: It was caught and fixed. See http://www.lua.org/manual/5.2/manual.html#luaL_len It is listed in http://www.lua.org/work/diffs-lua-5.2.0-lua-5.2.1-rc1.txt but it's hard to find it... Here are the relevant lines: 6103c6118 < <span class="apii">[-0, +1, <em>e</em>]</span> --- > <span class="apii">[-0, +0, <em>e</em>]</span> Thanks for the report.