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From: Florian Weimer <fw@deneb.enyo.de>
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Subject: Re: tcmalloc compatibility
Date: Wed, 18 Apr 2018 22:50:24 +0200
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* Szabolcs Nagy:

> even with the very small set of libc apis that a malloc
> interposer may want to use, there known (but undocumented)
> caveats:
>
> - glibc dlsym calls calloc (bites anybody who tries to wrap
> calloc in the usual way)

That's not what I meant with an interposed malloc.  Any such partial
interposition is going to be very tricky indeed.