[Numpy-discussion] Compiler change for Windows version between 1.0.3.1 and 1.0.4?

[Travis E. Oliphant]

Stuart Brorson wrote:
> Hi --
>
> I have found a bug in numpy-1.0.4.  The bug is a crash when doing
> linalg.inv() on a Windows machine.   The machine is an old Pentium 3
> machine.  The error report indicates an invalid op code.  Details
> about this bug are in the numpy tracker under ticket 635.
>
> Numpy-1.0.3.1 doesn't crash when running the same code.
>
> I installed the pre-built binaries available from numpy's SF site.
> Since the binaries were built by you, I can only suspect that the
> problem involves using a different compiler to build 1.0.4.  I suspect
> the new version was built with a compiler which emitted op codes the
> old P3 chip couldn't handle.
>
> Can the developers confirm or deny my hypothesis?
>   

You are correct, and the problem is in the process of being rectified by 
building on a different machine.   There are several Trac tickets 
already posted due to this problem.

-Travis O.