Patch: support callback on allocation overflow instead of calling abort()

[Vincent Lefevre]

On 2020-10-06 04:41:42 +0100, Colin Caine wrote:
> This is used by Julia to raise an OutOfMemory exception rather than having
> the Julia process itself abort.
> 
> Others on stackoverflow, etc, have experienced similar problems with
> undesired aborts(), so this patch would probably be useful to a variety of
> users. (see:
> https://github.com/JuliaLang/julia/issues/8286#issuecomment-323500953)
> 
> More information is available here and in the linked issues and PRs:
> https://github.com/JuliaLang/julia/pull/31215

Since the function could have allocated memory for intermediate
computations, how do you avoid memory leaks?

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