[PATCH] PR libstdc++/83833 fix chi_squared_distribution::param(const param&)

[Jonathan Wakely]

On 15/01/18 19:59 +0000, Jonathan Wakely wrote:
>The chi_squared_distribution::param(const param&) function should also
>update the parameters of the gamma_distribution member.
>
>	PR libstdc++/83833
>	* include/bits/random.h (chi_squared_distribution::param): Update
>	gamma distribution parameter.
>	* testsuite/26_numerics/random/chi_squared_distribution/83833.cc: New
>	test.
>
>Tested powerpc64le-linux, committed to trunk.
>
>(I know this is not a regression, but it's a small fix, and I also
>plan to apply it on the branches).

This is needed to prevent the test failing on x86-32.

Committed to trunk and gcc-7-branch.



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