[Bug libc/16291] feature request: provide simpler ways to compute stack and tls boundaries

["neleai at seznam dot cz" <sourceware-bugzilla at sourceware dot org>]

https://sourceware.org/bugzilla/show_bug.cgi?id=16291

Ondrej Bilka <neleai at seznam dot cz> changed:

           What    |Removed                     |Added
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                 CC|                            |neleai at seznam dot cz

--- Comment #5 from Ondrej Bilka <neleai at seznam dot cz> ---
Adding a thread-local variable with current bounds would be more appropriate.
It is interesting from other reasons, for example deciding if memory should be
allocated by alloca or malloc.

As performance is concerned you cannot do much better, as malloc already uses
tls you can avoid that overhead.

Also how do you handle split-stacks? Its gcc feature that does more harm than
good so do you support that?

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