[Bug dynamic-link/28248] is there a way to LD_PRELOAD library before other dynamic libraries?

["mail at milianw dot de" <sourceware-bugzilla@sourceware.org>]

https://sourceware.org/bugzilla/show_bug.cgi?id=28248

--- Comment #4 from Milian Wolff <mail at milianw dot de> ---
Thank you, I'll try out that linker flag and report back.

> So this is about destructors?

Yes, indeed. As a heap profiler and leak checker, I would like to call
`__libc_freeres` to silence leaks, similar to how valgrind does it. And I need
do that before any other library gets unloaded, as those could potentially try
to dlclose plugins loaded at runtime (this is what QtCore does). Doing that
after `__libc_freeres` would lead to crashes. So here I'm looking for ways of
preventing said crash.

> glibc currently does not guarantee that destructors run in the opposite order of constructors

Hm that sounds unfortunate. But if you say: "don't guarantee" - does it do it
normally, and there are just some corner cases where it wouldn't happen? As
long as it would help with the common case I'm running into (see above), it
would help me.

Cheers

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