Description of problem:
Excerpt from email from Stephen:

Hi,

On Thu, 2003-10-16 at 10:57, Stephen C. Tweedie wrote:


>> 000002c0 <ext3_free_blocks>:
>>      2c4:       81 ec ac 01 00 00       sub    $0x1ac,%esp


>> 000024b0 <ext3_new_inode>:
>>     24b4:       81 ec 28 02 00 00       sub    $0x228,%esp



Building these by hand with the original AS-2.1 compiler from my
Pensacola isos, I get:

Compiler: gcc-2.96-108.1
000002c0 <ext3_free_blocks>:
     2c4:	83 ec 5c             	sub    $0x5c,%esp
000023a0 <ext3_new_inode>:
    23a4:	83 ec 68             	sub    $0x68,%esp

But with the errata compiler things are *VERY* different.  I grabbed
2.1AS-errata/gcc/2.96-118.7.2 from beehive.  That's the exact same gcc
version string that appears in the 2.4.9-e.27 vmlinux version ID.  And
with that:

Compiler: gcc-2.96-118.7.2

000002c0 <ext3_free_blocks>:
     2c4:	81 ec ac 01 00 00    	sub    $0x1ac,%esp
000023a0 <ext3_new_inode>:
    2464:	81 ec 28 02 00 00    	sub    $0x228,%esp

These are the exact same sources trees with nothing but a "make clean;
install new compiler; make" in between.

*OUCH*.  I plead "mummy, it's not my fault!  Can I have a new compiler,
please?"

Cheers, 
 Stephen