From febc20fef1490a4ca9f7b0264a32b271760e370e Mon Sep 17 00:00:00 2001
From: Diego Lopez Recas <Diego.LopezRecas@arm.com>
Date: Thu, 16 Sep 2021 17:25:04 +0100
Subject: Fix undefined reinterpret_cast in BFloat16.hpp

This fixes gcc builds with version 8 or above.

Signed-off-by: Diego Lopez Recas <Diego.LopezRecas@arm.com>
Change-Id: I4b886854f4f3391f766e95c3478d3a5f9661507a
---
 src/armnnUtils/BFloat16.hpp | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

(limited to 'src')

diff --git a/src/armnnUtils/BFloat16.hpp b/src/armnnUtils/BFloat16.hpp
index 52344db810..a293cd488c 100644
--- a/src/armnnUtils/BFloat16.hpp
+++ b/src/armnnUtils/BFloat16.hpp
@@ -7,6 +7,7 @@
 
 #include <ostream>
 #include <cmath>
+#include <cstring>
 #include <stdint.h>
 
 namespace armnn
@@ -85,8 +86,10 @@ public:
     float ToFloat32() const
     {
         const uint32_t u32 = static_cast<uint32_t>(m_Value << 16u);
-        const float* f32 = reinterpret_cast<const float*>(&u32);
-        return *f32;
+        float f32;
+        static_assert(sizeof u32 == sizeof f32, "");
+        std::memcpy(&f32, &u32, sizeof u32);
+        return f32;
     }
 
     uint16_t Val() const
-- 
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