Package: mpfr
Severity: serious
Justification: no longer builds from source

Hello,

MPFR no longer build from source on s390. A complete build log can be
found at :

    
http://buildd.debian.org/fetch.php?&pkg=mpfr&ver=2.2.0.dfsg.1-5&arch=s390&stamp=1145312906&file=log&as=raw

I verified with the unmodified source for GMP and MPFR that it is not
related to the debian packaging.

The `Illegal instruction' or segfault errors occur in umul_ppmm
according to gdb (verified on tconst_catalan, tcheck and tmul). I
found the following changelog entry, maybe related :

    2005-03-22  Patrick Pelissier  <[EMAIL PROTECTED]>
            [...]
            * mul.c: Fix bug on HP-UX.
            longlong's umul_ppmm seems to be buggy on such a system.
            Don't use it under HP-UX.

I'll try to find a testcase for umul_ppmm to see if we can forward this
problem to GMP.

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