Re: [v3] Fix ext/random/hypergeometric_distribution/operators/values.cc on Solaris 9

[Paolo Carlini <paolo dot carlini at oracle dot com>]

Hi,

On 11/27/2013 03:14 PM, Rainer Orth wrote:
> hypergeometric_pdf is defined in testsuite/util/testsuite_random.h
> inside _GLIBCXX_USE_C99_MATH_TR1, but used unconditionally.  Fixed which
> the following patch which allows the test to compile and pass on
> i386-pc-solaris2.9.  On i386-pc-solaris2.11, it FAILs with an Arithmetic
> exception, as it did before the patch:
>
> Program received signal SIGFPE, Arithmetic exception.
> [Switching to Thread 1 (LWP 1)]
> 0x080542ba in std::generate_canonical<unsigned int, 32u, std::mersenne_twister_engine<unsigned int, 32u, 624u, 397u, 31u, 2567483615u, 11u, 4294967295u, 7u, 2636928640u, 15u, 4022730752u, 18u, 1812433253u> > (__urng=...)
>      at /var/gcc/regression/trunk/11-gcc/build/i386-pc-solaris2.11/libstdc++-v3/include/bits/random.tcc:3480
> 3480          return __sum / __tmp;
>
> __tmp is 0 here.
>
> Ok for mainline?
Please use // { dg-require-cmath "" } instead.

Thanks,
Paolo.