Test failure in gmp-4.2 on Pentium 4

Torbjorn Granlund tege at swox.com
Fri Apr 21 10:02:51 CEST 2006

Jonathan Day <imipak at yahoo.com> writes:

  I'd like to report a failure in one of the tests for
  gmp 4.2, on a Pentium 4 running Linux 2.6.16. The
  segment of output of interest is as follows:
  make[4]: Entering directory
  PASS: t-addsub
  PASS: t-cmp
  ERROR: incorrect plain product in test 53
  op1          =
  op2          =
      product  =
  ref_product  =
  /bin/sh: line 1: 20010 Aborted                
  FAIL: t-mul
  PASS: t-mul_i
  (The test was in tests/mpz, if there is any ambiguity
  as to what batch of tests was being performed.)
  I am using GCC set to compile to the pentium4
  architecture specifically. GMP was configured with
  C++, FFT and MPBSD options enabled.
Missing information, please see

But first, please check if you can reproduce the failure each time,


If it fails only on some invocations, or if the failing operands
change, you have a hardware problem. (This test, mpz/t-mul uses a lot
of memory and therefore is known to trigger hardware problems.)


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