Re: Garbage collection causes stack overflow

[Enrico Colombini <erix@...>]

On 11-Apr-19 19:21, Fotis Panagiotopoulos wrote:
> I am pretty confident that the issue is caused by the GC. I measure the stack exactly before 
> and after lua_pcall(), and indeed this is where the stack is used. I also placed some prints 
> and I see that stack usage increases only when GC is running.
>
> Note that stack is used progressively. On every GC call, more and more 
> is requested till the exhaustion. On the first
> calls the usage is pretty minimal.

Sparse (and probably not useful) thoughts:

- What allocator are you using? Does it fully support realloc?

- You could try tracing allocations by inserting a tracer between Lua 
allocation calls and the actual allocator, also doing a stack check 
(and possibly other checks) before and after each call, to get a few 
more clues about what is happening.

--
  Enrico