Question about build warnings.

[Georg-Johann Lay]

Ian Lance Taylor schrieb:
> Georg-Johann Lay <avr@gjlay.de> writes:
> 
>> Hi, when building gcc I get bunch of build warnings like these:
> 
> This is normal when building stage 1.  You should not see any warnings
> when building stages 2 or 3.
> 
> The warnings occur mainly on gcc diagnostic functions.  The definitions
> of the control sequences used in these functions change from time to
> time.  This then triggers warnings when building stage 1 with an older
> version of gcc.  These warnings are unimportant.
> 
> Ian

The background is bug reports like

http://gcc.gnu.org/PR48896#c2

where for some people the build fails because of warnings that I don't
even see with reasonable version of build GCC.