How to disable arena allocation without rewriting code?

[Mikihito Matsuura]

Hi,

Is there any way to quickly disable arena allocation and serve allocations via a system allocator, either by build flag or runtime configuration?

We are trying to debug OOB issue in arena allocation, but it can not be caught by e.g. ASan.

It would be great if we have a "debug mode" which splits an arena into individual allocations so that we can utilize existing memory debugging tools.

Mikihito

[Samuel Benzaquen]

On Fri, Dec 20, 2024 at 1:07 AM 'Mikihito Matsuura' via Protocol Buffers <prot...@googlegroups.com> wrote:

Hi,

Is there any way to quickly disable arena allocation and serve allocations via a system allocator, either by build flag or runtime configuration?

I have not tested this, but you might be able to do what you need by passing a very small `max_block_size` in the arena options. That would force each allocation to go its own block.

 

We are trying to debug OOB issue in arena allocation, but it can not be caught by e.g. ASan.

It would be great if we have a "debug mode" which splits an arena into individual allocations so that we can utilize existing memory debugging tools.

Mikihito

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