From 7a18af8c8e5cbb8cfd8739a0eb8fca9157808ab8 Mon Sep 17 00:00:00 2001
From: Srivatsan Iyer <supersaiyanmode@users.noreply.github.com>
Date: Tue, 15 Nov 2022 12:38:41 +0530
Subject: [PATCH] Exclude arc4random_buf implementation if it's already present
 in the platform (#1375)

This patch excludes definition of arc4random_buf on systems where it is already present. When the symbol is found, the macro EVENT__HAVE_ARC4RANDOM_BUF is set via CMake's configure_file(..).

Co-authored-by: Azat Khuzhin <a3at.mail@gmail.com>
---
 arc4random.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arc4random.c b/arc4random.c
index c9533b17..b3ec7655 100644
--- a/arc4random.c
+++ b/arc4random.c
@@ -471,6 +471,7 @@ arc4random(void)
 }
 #endif
 
+#ifndef EVENT__HAVE_ARC4RANDOM_BUF
 ARC4RANDOM_EXPORT void
 arc4random_buf(void *buf_, size_t n)
 {
@@ -484,6 +485,7 @@ arc4random_buf(void *buf_, size_t n)
 	}
 	ARC4_UNLOCK_();
 }
+#endif  /* #ifndef EVENT__HAVE_ARC4RANDOM_BUF */
 
 #ifndef ARC4RANDOM_NOUNIFORM
 /*