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List:       gmp-bugs
Subject:    gmp 6.0.0a test failure on HP-UX 11.11
From:       marc.glisse () inria ! fr (Marc Glisse)
Date:       2015-10-03 7:19:01
Message-ID: alpine.DEB.2.20.1510030911010.1779 () laptop-mg ! saclay ! inria ! fr
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On Fri, 18 Sep 2015, JONES, BILL wrote:

> *   The GMP version number, and if pre-packaged or patched then say so.
> *   gnu.org/gmp-6.0.0  (a) was on the TAR file.
> *   A test program that makes it possible for us to reproduce the bug. Include \
>                 instructions on how to run the program.
> *   PASS: t-jac
> *   mpz_bin_uiui wrong
> *     n=149
> *     k=21
> *     got=3303737755466674086229362854319845210698113315481537085440
> *     want=19332950844468483467894649
> *   /bin/sh[10]: 6721 Abort(coredump)
> *   FAIL: t-bin

[and you say later that this is the only test that fails]
Two things you could try:
- download a recent snapshort from the developers' corner on the
   website, in case something was fixed since then (I don't remember
   anything specific)
- use gcc, the most likely explanation is a compiler bug

Note that if your main goal is to use mpfr, mpfr does not use
mpz_bin_uiui, so you may hope that only this function is miscompiled and
mpfr is not affected.

> *   using ABI="2.0n"
> *         CC="/opt/ansic/bin/cc"
> *         CFLAGS="+O2 +DD32"

At least it seems to be using a 32 bit abi.

-- 
Marc Glisse


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