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Subject: [Bug libstdc++/105502] [9/10/11/12/13 Regression]
 std::normal_distribution deserialization issue
Date: Fri, 06 May 2022 22:59:11 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D105502

--- Comment #4 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-12 branch has been updated by Jonathan Wakely
<redi@gcc.gnu.org>:

https://gcc.gnu.org/g:03257e7ee31385a364b711898c8f1510fd638efe

commit r12-8354-g03257e7ee31385a364b711898c8f1510fd638efe
Author: Jonathan Wakely <jwakely@redhat.com>
Date:   Fri May 6 21:19:17 2022 +0100

    libstdc++: Fix deserialization for std::normal_distribution [PR105502]

    This fixes a regression in std::normal_distribution deserialization that
    caused the object to be left unchanged if the __state_avail value read
    from the stream was false.

    libstdc++-v3/ChangeLog:

            PR libstdc++/105502
            * include/bits/random.tcc
            (operator>>(basic_istream<C,T>&, normal_distribution<R>&)):
            Update state when __state_avail is false.
            *
testsuite/26_numerics/random/normal_distribution/operators/serialize.cc:
            Check that deserialized object equals serialized one.

    (cherry picked from commit 909ef4e2727ddc50a32d6ad379a1f1ccc1043c6a)=