Mac os X and embarassing failures of user

Mac os X and embarassing failures of user

[Erik Ø. Sørensen]

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I have now discovered, to my embarassment, that GCC 3.1, the default, 
is not the only compiler on Mac OS 10.2. There is also a gcc2,

  Reading specs from /usr/libexec/gcc/darwin/ppc/2.95.2/specs
  Apple Computer, Inc. version gcc-937.2, based on gcc version 2.95.2 
19991024   (release)

Using this compiler, I can compile all of gsl and the test, although 
there are problems with -O2, but everything works at -O1.  There is a 
consistent sig 11 failure with -O2 (that is, I have repeated it a 
couple of times):
   U54::~/Documents/gsl/gsl-1.2/randist: make check
   make  test
   gcc2 -DHAVE_CONFIG_H -I. -I. -I.. -I..    -O2 -Wno-long-double -c 
test.c
   gcc2: Internal compiler error: program cc1obj got fatal signal 11

The only test (as distinct from compiler failure) that fails is still 
the specfunc legendre:
  FAIL: gsl_sf_conicalP_0_e(0.0, 100.0, &r)
   expected:   0.3009174858819926
   obtained:    0.300917485881992   7.027199282265925e-16  2.33526e-15
   fracdiff: 1.014601497407329e-15
   value not within tolerance of expected value
      0.30091748588199202  7.02719928226592486e-16

This happens now without any optimization with gcc2, and is the same 
failur I had with GCC 3.1.

Thanks everyone for their kind suggestions,
Erik

--
Erik Ø. Sørensen,
phd student, Economics
Norwegian School of Economics and Business Administration

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Re: Mac os X and embarassing failures of user

[Brian Gough]

Erik Ø. Sørensen writes:
 > The only test (as distinct from compiler failure) that fails is still 
 > the specfunc legendre:
 >   FAIL: gsl_sf_conicalP_0_e(0.0, 100.0, &r)
 >    expected:   0.3009174858819926
 >    obtained:    0.300917485881992   7.027199282265925e-16  2.33526e-15

This should be fixed in CVS now.

It looks like the other problems are MacOS/powerpc specific compiler
problems.

Re: Mac os X and embarassing failures of user

[Brian Gough]

Erik Ø. Sørensen writes:
 > The only test (as distinct from compiler failure) that fails is still 
 > the specfunc legendre:
 >   FAIL: gsl_sf_conicalP_0_e(0.0, 100.0, &r)
 >    expected:   0.3009174858819926
 >    obtained:    0.300917485881992   7.027199282265925e-16  2.33526e-15

This should be fixed in CVS now.

It looks like the other problems are MacOS/powerpc specific compiler
problems.