commit e9d030687da6516d1335e8400e8e709bdb9b00f1
author Marshall Clow <mclow.lists@gmail.com> Thu Apr 16 21:36:54 2015 +0000
committer Marshall Clow <mclow.lists@gmail.com> Thu Apr 16 21:36:54 2015 +0000
tree 83ce1676dbfb612a1461986a7e6ecefc8faa6ce5
parent 3a4964aef37d746a78d88b632c49290dda824108

A few bits of N2994 didn't get fully implemented a long time ago. Thanks to STL@microsoft.com for the bug report

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@235134 91177308-0d34-0410-b5e6-96231b3b80d8

include/iterator

diff --git a/include/iterator b/include/iterator
index 7f7e9ee..c06ef8f 100644
--- a/include/iterator
+++ b/include/iterator
@@ -214,7 +214,7 @@
     typedef traits traits_type;
     typedef basic_istream<charT,traits> istream_type;
 
-    istream_iterator();
+    constexpr istream_iterator();
     istream_iterator(istream_type& s);
     istream_iterator(const istream_iterator& x);
     ~istream_iterator();
@@ -765,7 +765,7 @@
     istream_type* __in_stream_;
     _Tp __value_;
 public:
-    _LIBCPP_INLINE_VISIBILITY istream_iterator() : __in_stream_(0) {}
+    _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR istream_iterator() : __in_stream_(0), __value_() {}
     _LIBCPP_INLINE_VISIBILITY istream_iterator(istream_type& __s) : __in_stream_(&__s)
         {
             if (!(*__in_stream_ >> __value_))

include/ratio

diff --git a/include/ratio b/include/ratio
index 48dcd81..25ab503 100644
--- a/include/ratio
+++ b/include/ratio
@@ -21,8 +21,8 @@
 class ratio
 {
 public:
-    static const intmax_t num;
-    static const intmax_t den;
+    static constexpr intmax_t num;
+    static constexpr intmax_t den;
     typedef ratio<num, den> type;
 };
 
@@ -236,13 +236,13 @@
     static_assert(__static_abs<_Num>::value >= 0, "ratio numerator is out of range");
     static_assert(_Den != 0, "ratio divide by 0");
     static_assert(__static_abs<_Den>::value >  0, "ratio denominator is out of range");
-    static const intmax_t __na = __static_abs<_Num>::value;
-    static const intmax_t __da = __static_abs<_Den>::value;
-    static const intmax_t __s = __static_sign<_Num>::value * __static_sign<_Den>::value;
-    static const intmax_t __gcd = __static_gcd<__na, __da>::value;
+    static _LIBCPP_CONSTEXPR const intmax_t __na = __static_abs<_Num>::value;
+    static _LIBCPP_CONSTEXPR const intmax_t __da = __static_abs<_Den>::value;
+    static _LIBCPP_CONSTEXPR const intmax_t __s = __static_sign<_Num>::value * __static_sign<_Den>::value;
+    static _LIBCPP_CONSTEXPR const intmax_t __gcd = __static_gcd<__na, __da>::value;
 public:
-    static const intmax_t num = __s * __na / __gcd;
-    static const intmax_t den = __da / __gcd;
+    static _LIBCPP_CONSTEXPR const intmax_t num = __s * __na / __gcd;
+    static _LIBCPP_CONSTEXPR const intmax_t den = __da / __gcd;
 
     typedef ratio<num, den> type;
 };