Stack frames larger than 4K should be rejected, but what if I want more

IGotD- nise at nise.com
Sun Jun 27 18:56:57 UTC 2021


This is a breakout thread from this thread.

https://forum.dlang.org/thread/ghodronzxeirokyoqeag@forum.dlang.org

According to the comment from Walter.

*As per Walter's recent comment in that thread, he asserts that 
stack allocations beyond 4k should be rejected.*

in this issue:
https://issues.dlang.org/show_bug.cgi?id=17566

In general I can agree with the rationale to not allow stack 
frames larger than 4K when it comes to normal programming, it 
makes sense. However, since D is supposed to be a "systems 
programming language" the language should not dictate what the 
programmer should be able to do with the stack. It also assumes 
things that all systems have 4K page sizes, that the stack should 
be used moderately. There might be cases when the programmer 
wants to go nuts with stack and do a lot storage on it, for 
whatever reason. Therefore I think this limit should not be a 
language definition.

First this 4K limit should be configurable per operating system. 
Also there should be an option to override this limit, for 
example with a compiler option.


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