[libc++] Consistently replace `std::` qualification with `_VSTD::` or nothing. NFCI.
I used a lot of `git grep` to find places where `std::` was being used
outside of comments and assert-messages. There were three outcomes:
- Qualified function calls, e.g. `std::move` becomes `_VSTD::move`.
This is the most common case.
- Typenames that don't need qualification, e.g. `std::allocator` becomes `allocator`.
Leaving these as `_VSTD::allocator` would also be fine, but I decided
that removing the qualification is more consistent with existing practice.
- Names that specifically need un-versioned `std::` qualification,
or that I wasn't sure about. For example, I didn't touch any code in
<atomic>, <math.h>, <new>, or any ext/ or experimental/ headers;
and I didn't touch any instances of `std::type_info`.
In some deduction guides, we were accidentally using `class Alloc = typename std::allocator<T>`,
despite `std::allocator<T>`'s type-ness not being template-dependent.
Because `std::allocator` is a qualified name, this did parse as we intended;
but what we meant was simply `class Alloc = allocator<T>`.
Differential Revision: https://reviews.llvm.org/D92250
GitOrigin-RevId: d586f92c9456a972ee475a021525c0522b89587b
diff --git a/include/iterator b/include/iterator
index d4667d3..90b5f41 100644
--- a/include/iterator
+++ b/include/iterator
@@ -495,12 +495,11 @@
private:
struct __two {char __lx; char __lxx;};
template <class _Up> static __two __test(...);
- template <class _Up> static char __test(typename std::__void_t<typename _Up::iterator_category>::type* = 0,
- typename std::__void_t<typename _Up::difference_type>::type* = 0,
- typename std::__void_t<typename _Up::value_type>::type* = 0,
- typename std::__void_t<typename _Up::reference>::type* = 0,
- typename std::__void_t<typename _Up::pointer>::type* = 0
- );
+ template <class _Up> static char __test(typename __void_t<typename _Up::iterator_category>::type* = 0,
+ typename __void_t<typename _Up::difference_type>::type* = 0,
+ typename __void_t<typename _Up::value_type>::type* = 0,
+ typename __void_t<typename _Up::reference>::type* = 0,
+ typename __void_t<typename _Up::pointer>::type* = 0);
public:
static const bool value = sizeof(__test<_Tp>(0,0,0,0,0)) == 1;
};