PR libstdc++/86168 fix ambiguous default constructor

	PR libstdc++/86168
	* include/bits/random.h (random_device(const string&)): Remove
	default argument.

From-SVN: r261636

diff --git a/libstdc++-v3/ChangeLog b/libstdc++-v3/ChangeLog
index cf6bfc9509a286f49c8d635ac2d2bbd2de803f49..482f64ee4604289dd7d3d793e2c13f90793d38dd 100644 (file)
--- a/libstdc++-v3/ChangeLog
+++ b/libstdc++-v3/ChangeLog
@@ -1,5 +1,9 @@
 2018-06-15  Jonathan Wakely  <jwakely@redhat.com>
 
+       PR libstdc++/86168
+       * include/bits/random.h (random_device(const string&)): Remove
+       default argument.
+
        * include/bits/char_traits.h (__cpp_lib_constexpr_char_traits): Only
        define for C++17 and above.
 

diff --git a/libstdc++-v3/include/bits/random.h b/libstdc++-v3/include/bits/random.h
index 738c62fccd12402b204e4e5ba0715a09145cadd5..e59c8b0221d01b84999b742f9ab68907657588af 100644 (file)
--- a/libstdc++-v3/include/bits/random.h
+++ b/libstdc++-v3/include/bits/random.h
@@ -1614,7 +1614,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
     random_device() { _M_init("mt19937"); }
 
     explicit
-    random_device(const std::string& __token = "mt19937")
+    random_device(const std::string& __token)
     { _M_init_pretr1(__token); }
 #endif