From 077d01f2fcc305809f084ccc34badc531ae2f30a Mon Sep 17 00:00:00 2001
From: Cory Fields <cory-nospam-@coryfields.com>
Date: Mon, 17 Jul 2017 13:14:53 -0400
Subject: random: only use getentropy on openbsd

---
 src/random.cpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

(limited to 'src/random.cpp')

diff --git a/src/random.cpp b/src/random.cpp
index 3226abb69e..b308e8f4a1 100644
--- a/src/random.cpp
+++ b/src/random.cpp
@@ -227,10 +227,12 @@ void GetOSRand(unsigned char *ent32)
             RandFailure();
         }
     }
-#elif defined(HAVE_GETENTROPY)
+#elif defined(HAVE_GETENTROPY) && defined(__OpenBSD__)
     /* On OpenBSD this can return up to 256 bytes of entropy, will return an
      * error if more are requested.
      * The call cannot return less than the requested number of bytes.
+       getentropy is explicitly limited to openbsd here, as a similar (but not
+       the same) function may exist on other platforms via glibc.
      */
     if (getentropy(ent32, NUM_OS_RANDOM_BYTES) != 0) {
         RandFailure();
-- 
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