From 7f51257c0885106d0197f37f2277edede4fc9e59 Mon Sep 17 00:00:00 2001
From: David Carlier <devnexen@gmail.com>
Date: Mon, 15 Jan 2018 22:10:58 +0000
Subject: [PATCH] NetBSD has its own unoptimizable memset version since 2013

checking presence of the function if older versions of NetBSD
---
 configure.ac          | 1 +
 main/explicit_bzero.c | 4 +++-
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/configure.ac b/configure.ac
index 0d3c83ee1b4..de2fbaae358 100644
--- a/configure.ac
+++ b/configure.ac
@@ -608,6 +608,7 @@ chroot \
 ctime_r \
 cuserid \
 crypt \
+explicit_memset \
 flock \
 ftok \
 funopen \
diff --git a/main/explicit_bzero.c b/main/explicit_bzero.c
index 5f37811d37c..22d768d18bc 100644
--- a/main/explicit_bzero.c
+++ b/main/explicit_bzero.c
@@ -32,7 +32,9 @@
 
 PHPAPI void php_explicit_bzero(void *dst, size_t siz)
 {
-#ifdef __GNUC__
+#if HAVE_EXPLICIT_MEMSET
+    explicit_memset(dst, 0, siz);
+#elif defined(__GNUC__)
 	memset(dst, 0, siz);
 	asm __volatile__("" :: "r"(dst) : "memory");
 #else