hail marry (booting PowerMac 8600)

[Ian Lance Taylor]

kevin diggs <diggskevin38@gmail.com> writes:

> I have narrowed this down to one file, drivers/scsi/mesh.c which is
> the host adapter driver for the internal SCSI controller on a
> PowerMac8600. If I compile this file with 4.1.2 and everything else
> with 4.3.5 then the beast will boot.
>
> Anyone have any thoughts on what changed (something optimizery I would
> guess?) between 4.1.2 and 4.3.5?

Many many things changed.  I would recommend looking at the code
generated by the two compilers to see if you can spot the key
difference.

As a short in the dark, you said you use -fno-strict-aliasing; do you
also use -fno-strict-overflow?

Ian