Re: RFA: Recognize bottom of stack on Linux

[Andrew Cagney <ac131313@cygnus.com>]

> I'm curious as to why we can't just set this universally, or at least a
>> little more globally.  Most things that have a main () use it as a
>> normal main ().  I'd propose that we set it as the default frame chain,
>> and provide/document an option to ignore inside_main_func.
> 
> 
> Well, gdbarch is never supposed to change the default behavior of
> macros; this helps us convert pre-gdbarch targets incrementally.
> Simply turning on gdbarch for one's target ideally wouldn't change its
> behavior at all.


Yes, definitly.  Rule of least suprise, learnt from multi-arch experience.

However, that doesn't stop an independant change that does alter the 
default behavour.  cf. my proposed patch to change the default value of 
TARGET_LONG_DOUBLE_FORMAT to ieee_double from floatformat_unknown.

enjoy,
Andrew