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Fix PR#24267. use numeric_limits::max instead of ~0 for 'all ones', since that might give wrong answers on a 1's complement machine.

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git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@243674 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Marshall Clow 2015-07-30 18:26:34 +00:00
parent 36dc080bf6
commit 0934c750ed
1 changed files with 1 additions and 1 deletions
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include/algorithm
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@ -3037,7 +3037,7 @@ uniform_int_distribution<_IntType>::operator()(_URNG& __g, const param_type& __p
if (_Rp == 0)
return static_cast<result_type>(_Eng(__g, _Dt)());
size_t __w = _Dt - __clz(_Rp) - 1;
if ((_Rp & (_UIntType(~0) >> (_Dt - __w))) != 0)
if ((_Rp & (std::numeric_limits<_UIntType>::max() >> (_Dt - __w))) != 0)
++__w;
_Eng __e(__g, __w);
_UIntType __u;