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Tom Sutcliffe <>于2018年4月16日周一 下午8:22写道:
Hi list,

I've been reviewing some of my native code for safety and noticed that I've been assuming lua_next() will not raise arbitrary errors. In the 5.3 documentation however, lua_next is listed as 'e' meaning it can.

I couldn't think of any obvious reason how it could error, since there is no metamethod to override a next iteration, and I couldn't see anything in the implementation that would trigger an __index. Am I missing something or is the documentation incorrect?

`lua_next`  may raise error when you pass a key that is not exist in the table.