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

[Weddington, Eric]

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> Sent: Sunday, April 05, 2009 2:30 PM
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> Subject: [avr-gcc-list] when is it safe to use -mtiny-stack
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> I have an ATmega3290P app that I am trying to optimize for size.
> I find that using the -mtiny-stack option gives me the last

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?

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