[Bug-gsl] Testsuite failure on OSX 10.10 with FSF GCC

[Volker Braun]

I get the following failure (and more related ones, see attached log)
when compiling gsl on OSX Yosemite with FSF GCC 4.9.1:

FAIL: gsl_sf_mathieu_se(1, 5.0, M_PI_2, &r) [2626]
  expected: 1.3374338870223450e+00
  obtained: 1.0000000000000000e+00 +/- 4.4408920985006262e-16 (rel=4.44089e-16)
  fracdiff: 1.4436082615889587e-01
 tolerance: 9.9999999999999995e-07
  value/expected not consistent within reported error
  value not within tolerance of expected value
  1.000000000000000000e+00  4.440892098500626162e-16


It works with Apple clang. I tried to make a non-optimized build
("export CFLAGS=-O0") to debug this but gsl is overriding the
optimization flags.

test-suite.log
Description: Text Data