random.c: use arc4random_buf

* random.c (fill_random_bytes_syscall): use arc4random_buf if
  available.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@54912 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 4 insertions, 1 deletions

diff --git a/random.c b/random.c
index 06c66ca721..31e7db22f4 100644
--- a/random.c
+++ b/random.c
@@ -480,7 +480,10 @@ fill_random_bytes_urandom(void *seed, size_t size)
 # define fill_random_bytes_urandom(seed, size) -1
 #endif
 
-#if defined(_WIN32)
+#if 0
+#elif defined(HAVE_ARC4RANDOM_BUF)
+#define fill_random_bytes_syscall(buf, size, unused) (arc4random_buf(buf, size), 0)
+#elif defined(_WIN32)
 static void
 release_crypt(void *p)
 {