RE: [avr-gcc-list] when is it safe to use -mtiny-stack

[John Regehr]

> It's not safe at all. The 3290P has 2K of RAM which gets used for static 
> variables, stack space and heap (if you use dynamic memory allocation). 
> -mtiny-stack will cause the compiler to only change the lowest 8-bits of 
> the stack, which means that you effectively only have a 255 byte stack. 
> Can you guarantee that your application does not use any more stack 
> space than this? Do you have complete code coverage in your testing to 
> prove this?

Can I have source code for the program we are talking about?  I'm working 
on a stack analyzer.  Currently it does not support the tiny-stack case 
but certainly that would be nice.

John Regehr