Public bug reported:

With the latest update of gsl from Debian, ruby-gsl's dep8 test start
failing on ppc64el:

421s 
===============================================================================
421s Failure: test_random32_bsd_0(RngTest):
421s   random32-bsd, 10000 steps (852261210 observed vs 1663114331 expected).
421s   <false> is not true.
421s /tmp/autopkgtest.r5vIrM/build.JWr/src/test/gsl/rng_test.rb:92:in `block (3 
levels) in <class:RngTest>'
421s 
===============================================================================
421s : (0.007176)
421s     test_random32_glibc2_0:                                .: (0.001215)
421s     test_random32_libc5_0:                         F
421s 
===============================================================================
421s Failure: test_random32_libc5_0(RngTest):
421s   random32-libc5, 10000 steps (367802360 observed vs 1967452027 expected).
421s   <false> is not true.
421s /tmp/autopkgtest.r5vIrM/build.JWr/src/test/gsl/rng_test.rb:92:in `block (3 
levels) in <class:RngTest>'
421s 
===============================================================================
421s : (0.002615)
421s     test_random64_bsd_0:                           F
421s 
===============================================================================
421s Failure: test_random64_bsd_0(RngTest):
421s   random64-bsd, 10000 steps (210970120 observed vs 864469165 expected).
421s   <false> is not true.
421s /tmp/autopkgtest.r5vIrM/build.JWr/src/test/gsl/rng_test.rb:92:in `block (3 
levels) in <class:RngTest>'
421s 
===============================================================================
421s : (0.002551)
421s     test_random64_glibc2_0:                                .: (0.001151)
421s     test_random64_libc5_0:                         F
421s 
===============================================================================
421s Failure: test_random64_libc5_0(RngTest):
421s   random64-libc5, 10000 steps (221021662 observed vs 2106639801 expected).
421s   <false> is not true.
421s /tmp/autopkgtest.r5vIrM/build.JWr/src/test/gsl/rng_test.rb:92:in `block (3 
levels) in <class:RngTest>'
421s 
===============================================================================
421s : (0.002627)

This looks like a precision problem caused by excessive optimization in
the architecture.

** Affects: gsl (Ubuntu)
     Importance: High
     Assignee: Sergio Durigan Junior (sergiodj)
         Status: In Progress


** Tags: update-excuse

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https://bugs.launchpad.net/bugs/2035228

Title:
  ruby-gsl dep8 fails on ppc64el

Status in gsl package in Ubuntu:
  In Progress

Bug description:
  With the latest update of gsl from Debian, ruby-gsl's dep8 test start
  failing on ppc64el:

  421s 
===============================================================================
  421s Failure: test_random32_bsd_0(RngTest):
  421s   random32-bsd, 10000 steps (852261210 observed vs 1663114331 expected).
  421s   <false> is not true.
  421s /tmp/autopkgtest.r5vIrM/build.JWr/src/test/gsl/rng_test.rb:92:in `block 
(3 levels) in <class:RngTest>'
  421s 
===============================================================================
  421s : (0.007176)
  421s     test_random32_glibc2_0:                              .: (0.001215)
  421s     test_random32_libc5_0:                               F
  421s 
===============================================================================
  421s Failure: test_random32_libc5_0(RngTest):
  421s   random32-libc5, 10000 steps (367802360 observed vs 1967452027 
expected).
  421s   <false> is not true.
  421s /tmp/autopkgtest.r5vIrM/build.JWr/src/test/gsl/rng_test.rb:92:in `block 
(3 levels) in <class:RngTest>'
  421s 
===============================================================================
  421s : (0.002615)
  421s     test_random64_bsd_0:                         F
  421s 
===============================================================================
  421s Failure: test_random64_bsd_0(RngTest):
  421s   random64-bsd, 10000 steps (210970120 observed vs 864469165 expected).
  421s   <false> is not true.
  421s /tmp/autopkgtest.r5vIrM/build.JWr/src/test/gsl/rng_test.rb:92:in `block 
(3 levels) in <class:RngTest>'
  421s 
===============================================================================
  421s : (0.002551)
  421s     test_random64_glibc2_0:                              .: (0.001151)
  421s     test_random64_libc5_0:                               F
  421s 
===============================================================================
  421s Failure: test_random64_libc5_0(RngTest):
  421s   random64-libc5, 10000 steps (221021662 observed vs 2106639801 
expected).
  421s   <false> is not true.
  421s /tmp/autopkgtest.r5vIrM/build.JWr/src/test/gsl/rng_test.rb:92:in `block 
(3 levels) in <class:RngTest>'
  421s 
===============================================================================
  421s : (0.002627)

  This looks like a precision problem caused by excessive optimization
  in the architecture.

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