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Mark LWG 2716 as complete - shuffle and sample disallows lvalue URNGs.

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Libc++'s implementation of shuffle and sample already support lvalue and rvalue
RNG's. This patch adds tests for both categories and marks the issue as complete.

This patch also contains drive-by change for std::experimental::sample which
improves the diagnostics produced when the correct iterator categories are
not supplied.


git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@279947 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Eric Fiselier
2016-08-28 21:55:00 +00:00
parent 113315b9a4
commit 17c38db650
6 changed files with 19 additions and 13 deletions
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4
test/libcxx/iterators/trivial_iterators.pass.cpp
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@@ -42,7 +42,7 @@ class my_input_iterator
{
It it_;
template <class U> friend class input_iterator;
template <class U> friend class my_input_iterator;
public:
typedef my_input_iterator_tag iterator_category;
typedef typename std::iterator_traits<It>::value_type value_type;
@@ -55,7 +55,7 @@ public:
my_input_iterator() : it_() {}
explicit my_input_iterator(It it) : it_(it) {}
template <class U>
my_input_iterator(const input_iterator<U>& u) :it_(u.it_) {}
my_input_iterator(const my_input_iterator<U>& u) :it_(u.it_) {}
reference operator*() const {return *it_;}
pointer operator->() const {return it_;}