[Bug fortran/34482] FAIL: gfortran.dg/nan_4.f90 -O tests for errors

[burnus at gcc dot gnu dot org]

------- Comment #1 from burnus at gcc dot gnu dot org  2007-12-15 19:01 -------
Hmm, looking at the test suite results, it works on
  i686-pc-linux-gnu, i386-pc-linux-gnu,
  ia64-suse-linux-gnu, x86_64-unknown-linux-gnu,
  arm-unknown-elf, v850-unknown-elf, i686-pc-cygwin,
  hppa2.0w-hp-hpux11.11
but fails on
  hppa-unknown-linux-gnu, hppa64-hp-hpux11.11,
  powerpc-apple-darwin8.5.0, powerpc64-apple-darwin8.11.0,
  m32r-unknown-elf, powerpc64-suse-linux-gnu

I wonder whether this is an endian problem. I am transferring the hexadecimal
constant   z'FFFFFFFF'   bitwise to a 4-byte-wide real variable.

(Actually, I do not care about its value, only about that (a) the value is
transferred bitwise and (b) that if an error is printed for an
overflow/underflow/NaN/+-Inf.)

On the "working" systems the bit pattern is equivalent to NaN, but I do not
know the value is on the failing systems.

Which version of the MPFR library are you using?

Can you compile and run the following program and post the output? 
(If needed, use the option -fno-range-check, but seemingly the option is not
needed as the message is missing.)

print *, real(z'FFFFFFFF')
end


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34482