Re: Dangerous to call luaL_checkstack when the stack is saturated?

[Philipp Janda <siffiejoe@...>]

Am 04.12.2015 um 08:58 schröbte DeathByNukes:
> Looking at the implementation of luaL_checkstack, it merely calls
> lua_checkstack and immediately calls luaL_error if that returns
> false. luaL_error internally pushes 2 values on the stack without checking.
>
> Shouldn't there be a call to lua_checkstack(L,2) somewhere in there so it
> can conditionally pop 2 values from the stack before proceeding?

Lua allocates 5 additional stack slots for internal use in Lua API 
functions. See `EXTRA_STACK` in `lstate.h`.

Philipp