From 66c1d05b38aa3cbfdce71a5a1a4ad7ab85fe4ceb Mon Sep 17 00:00:00 2001
From: espie <espie@openbsd.org>
Date: Fri, 22 Mar 2019 12:39:42 +0000
Subject: that "device" is an abstraction to the underlying OS PRNG. In
 OpenBSD's case, we know it has optimal entropy properties, so just say so.

okay mikeb@, "why not" deraadt@
---
 lib/libcxx/src/random.cpp | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'lib/libcxx/src/random.cpp')

diff --git a/lib/libcxx/src/random.cpp b/lib/libcxx/src/random.cpp
index 4a2468368d0..9efac7a66a7 100644
--- a/lib/libcxx/src/random.cpp
+++ b/lib/libcxx/src/random.cpp
@@ -34,6 +34,7 @@
 #include <nacl/nacl_random.h>
 #endif
 
+#include <limits>
 
 _LIBCPP_BEGIN_NAMESPACE_STD
 
@@ -173,7 +174,11 @@ random_device::operator()()
 double
 random_device::entropy() const _NOEXCEPT
 {
+#ifdef __OpenBSD__
+    return std::numeric_limits<unsigned int>::digits;
+#else
     return 0;
+#endif
 }
 
 _LIBCPP_END_NAMESPACE_STD
-- 
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