[libc++] [P0935] [C++20] Eradicating unnecessarily explicit default constructors from the standard library.

http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0935r0.html

Reviewed By: ldionne, #libc

Differential Revision: https://reviews.llvm.org/D91292

1 files changed, 10 insertions, 2 deletions

diff --git a/libcxx/include/algorithm b/libcxx/include/algorithm
index fe9caf4..da55e5e 100644
--- a/libcxx/include/algorithm
+++ b/libcxx/include/algorithm
@@ -3029,9 +3029,17 @@ private:
 
 public:
     // constructors and reset functions
-    explicit uniform_int_distribution(result_type __a = 0,
-                                      result_type __b = numeric_limits<result_type>::max())
+#ifndef _LIBCPP_CXX03_LANG
+    uniform_int_distribution() : uniform_int_distribution(0) {}
+    explicit uniform_int_distribution(
+        result_type __a, result_type __b = numeric_limits<result_type>::max())
+        : __p_(param_type(__a, __b)) {}
+#else
+    explicit uniform_int_distribution(
+        result_type __a = 0,
+        result_type __b = numeric_limits<result_type>::max())
         : __p_(param_type(__a, __b)) {}
+#endif
     explicit uniform_int_distribution(const param_type& __p) : __p_(__p) {}
     void reset() {}