AIX bootstrap failure

[Jerry Quinn]

David Edelsohn wrote:
>>>>>>jlquinn  writes:
> 
> 
> jlquinn> I updated the tree (no local patches), and reconfigured and bootstrapped mainline.  The config is:
> jlquinn> ../gcc/configure   --prefix=/home/jlquinn/gcc/dev --with-cpu=power4 --with-gcc-version-trigger=/home/jlquinn/gcc/dev/gcc/gcc/version.c --enable-languages=c,c++,java
> 
> jlquinn> This is on AIX 5.2 pl 3, using xlc.
> 
> jlquinn> Bootstrap comparison failure!
> jlquinn> ./fold-const.o differs
> 
> 	I bootstrap with GCC, not XLC, and I have been bootstrapping
> successfully with a few local patches, but nothing that should affect
> this type of failure.
> 
> 	My local patches include a declaration of atoll(), which exists on
> AIX 5.2 but not AIX 5.1, and the header cache from GCC built on AIX 5.1
> causes problems.  The other patch adds -Wl,-bbigtoc to work around a
> recently re-introduced TOC overflow, which I am surprised that you did not
> encounter.
> 
> 	The stage1 compiler has been known to cause bootstrap miscompares,
> but it is very rare.

I refreshed today and got the same bootstrap comparison failure again 
with xlc.  Should I file a bug or is bootstrapping from xlc not going to 
be supported in the future.

Since I can't use xlc, I tried pulling down a gcc 3.3.3 binary for aix 
5.1.  That built the stage 1 compiler but xgcc immediately crashed.  Can 
you point me to a binary that I can use to bootstrap with?

Thanks,
Jerry