optimization/10877: [3.3/3.4 regression] miscompilation with -O3 -fPIC on x86

[Wolfgang Bangerth]

> It does not fail for me though on i686-pc-linux-gnu with GCC: 3.4  
> 20030517 (experimental).
> Or on i686-unkown-openbsd3.1 with gcc version 3.4 20030519  
> (experimental).

That's pretty weird. I can reproduce this with most a 3.4 snapshot from 
2003-05-15 as well as a 3.3 snapshot from 2003-05-16. I compared the 
assembler output, and instructionwise they are equal, but there are some 
additional linkonce things in your output. I don't know enough about this 
stuff to tell whether that's relevant.

I'll update now to present HEAD and check+report again once the bootstrap 
is done.

W.

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Wolfgang Bangerth              email:            bangerth@ices.utexas.edu
                               www: http://www.ices.utexas.edu/~bangerth/