Re: Regarding errors raised by luaL_testudata

[Philipp Janda <siffiejoe@...>]

Am 13.07.2015 um 21:55 schröbte chekwob:
> Hello.

Hi!

> I am looking at the reference manual for Lua 5.3, specifically the C
> API function luaL_testudata. It appears this function can somehow raise
> errors, as it is marked [-0, +0, e], but looking at the implementation
> of this function within the source code, I don't see how. It doesn't
> appear to raise anything by itself, and all of the functions it calls
> are marked as not raising errors.
>
> - lua_touserdata [-0, +0, –]
> - lua_getmetatable [-0, +(0|1), –]
> - luaL_getmetatable [-0, +1, –]

That one should be [-0, +1, e], because it is implemented via 
`lua_getfield` which has that signature (because it may fail during 
memory allocation for the string key).

> - lua_rawequal [-0, +0, –]
> - lua_pop [-n, +0, –]
>
> Is this an error in the documentation, or am I missing something?

While we are at it: There is a typo in the `le` event description in the 
5.3 manual:

    Unlike other operations, The less-equal ...


Philipp