[Bug bootstrap/44959] [4.6 Regression] bootstrap failed at Comparing stages 2 and 3

[ro at CeBiTec dot Uni-Bielefeld.DE]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44959

--- Comment #35 from ro at CeBiTec dot Uni-Bielefeld.DE <ro at CeBiTec dot Uni-Bielefeld.DE> 2012-09-14 13:49:28 UTC ---
> --- Comment #28 from Hin-Tak Leung <htl10 at users dot sourceforge.net>
> 2012-08-30 17:32:35 UTC ---
> (In reply to comment #22)
>
>> > There are two curious things:
>> > 1. why does the 2nd stage drops to only about 600 byte. (I assume 20-30k is
>> > normal).
>> 
>> That's certainly completely unexpected.  I'd ask you to rebuild
>> cc1-checksum.o for stage2 and stage3 (move the .o's aside, run make -n
>> cc1-checksum.o, then manually add -v -save-temps to the compilation
>> line.  Then attach a tarball with the .c and output files and the gcc -v
>> output to see if there are any obvious diffences between the compilations.
>
> *.c is the same - the difference in size comes from -gtoggle (added to stage
> 2).

You never mentioned -gtoggle before.  It seems you are using
--with-build-config=bootstrap-debug, correct?  If you report a problem,
*please* provide *all* the necessary information about your build, which
includes exact configure options used.

Instead of retrying with each and every gcc release, it's much more
useful to stay with a single one that fails and investigate that in
detail.  Unfortunately, you never provided the exact command lines used
to build the differing stage2 and 3 object files I've requested some
time ago.  This way, the difference would have been immediately
obvious instead of running in circles for weeks.

    Rainer