Re: lua_pushstring during script parsing

[Rici Lake <lua@...>]

On 4-Jun-05, at 1:55 PM, Andreas Falkenhahn wrote:

> Hi,
>
> I noticed that the line that actually causes the crash is
>
> luaC_checkgc()
>
> which is a macro that calls luaC_collectgarbage() from time
> to time. If I comment that line out, it does not crash any more.
> But that does not really help me.
>
> If it's not allowed to call lua_pushstring or lua_newtable etc.
> during the parser is active, is there any other way to store data
> in the registry during script parsing?


I assume this is Lua 5.0.2. I don't believe it is possible to do 
anything which might trigger garbage collection during parsing, which 
is why ChunkReaders are not able to actually use the Lua state.

As I understand it, the Lua 5.1 parser is gc-safe, if that's any help.

What I've done in order to get around problems like this (in 
ChunkReaders, anyway) is create a completely separate Lua state, and 
use that. Of course, in your case you would have to copy information 
back from the scratch state; I guess it would depend on how much 
information it was.

Rici