[Help-gsl] Fw: gsl-1.15 mingw: ode-initval2 test fails

[Ray Satiro]

Hi, below is an e-mail that I tried to send to the list last night. It looks as 
though it was silently rejected but I don't know why. I have subscribed to the 
list but I was not subscribed when I first sent this email. I am not set to 
receive mail delivery so please CC me on any reply. Thanks

Here:

----- Forwarded Message ----
> From: Ray Satiro <address@hidden>
> To: address@hidden
> Cc: address@hidden
> Sent: Fri, June 10, 2011 2:25:27 AM
> Subject: gsl-1.15 mingw: ode-initval2 test fails
> 
> > Hi,
> > 
> > I'm compiling the latest 1.15 using MinGW+Msys in a  Win XP  platform.
> > I've got a problem related to ode-initval2. I  used GCC version  4.5.2
> > (MinGW latest official version) with  CFLAGS="-fexceptions -mthreads"  and
> > make -k check completed  successfully. The issue is appearing turning  on
> >  optimization,
> > 
> > with CFLAGS="-O2 -fexceptions -mthreads"
> > 
> > 
> 
> [...]
> 
> > I also changed the compiler version (using  CFLAGS="-O2  -fexceptions
> 
> > -mthreads" ) and
> > 
> > GCC  3.4.5 => OK
> > GCC 4.2.1 =>  OK
> > GCC 4.4.0 =>  Failing
> > GCC 4.5.2 => Failing
> > 
> > I don't know if   the test limits are too much stringent or there is a bug
> > or  incompatibility  with GCC 4.4.x onwards.
> > 
> > At the moment I'm  using the library compiled (and  make check passed)
> > with GCC 4.5.2  removing the -O2 from the Makefile in  ode-initval2, but
> > any patch  to permit optimization is welcome.
> > 
> > Should  I submit a bug  officially to trace the issue?
> > 
> > Regards
> > 
> >  Max
> > 
> >
> 
> Hi
> 
> MINGW32_NT-6.0 COMPUTER 1.0.11(0.46/3/2)  2009-01-29 00:39 i686 Msys
> gcc.exe (tdm-1) 4.5.1
> 
> Yes, I had the same  problem.
> 
> FAIL: bsimp/msbdf e5_bigt [1] (1.0190909463048507e-020 observed  vs 
> 1.020144070808528e-020 expected) [1214]
> FAIL: bsimp/msbdf e5_bigt [2]  (1.0194255784181719e-020 observed vs 
> 1.0183729939450725e-020 expected)  [1215]
> FAIL: bsimp/msbdf e5_bigt [3] (3.7405084513304344e-065 observed vs 
> 3.7366884728539915e-065 expected) [1216]
> 
> Adding -ffloat-store fixes  the problem. Actual commands:
> 
> CFLAGS='-g -O2 -ffloat-store' ./configure  -C > config.out 2>&1
> make > make.out 2>&1
> make -k  check > make.check.out 2>&1
> grep -i fail make.check.out
> 
> So  try that using gcc 4.5.2
>