From 299bbe232506782d368f5fb3c8b9518dbfc691b0 Mon Sep 17 00:00:00 2001
From: Jeff Daily <jeff.daily@amd.com>
Date: Mon, 25 Nov 2019 19:03:03 -0800
Subject: [PATCH] fix hipMempcy precondition, test for zero size first (#1697)

---
 src/hip_memory.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/hip_memory.cpp b/src/hip_memory.cpp
index be360428c4..00a7af59f8 100644
--- a/src/hip_memory.cpp
+++ b/src/hip_memory.cpp
@@ -354,8 +354,8 @@ void memcpy_impl(void* __restrict dst, const void* __restrict src, size_t n,
 
 hipError_t memcpyAsync(void* dst, const void* src, size_t sizeBytes,
                        hipMemcpyKind kind, hipStream_t stream) {
-    if (!dst || !src) return hipErrorInvalidValue;
     if (sizeBytes == 0) return hipSuccess;
+    if (!dst || !src) return hipErrorInvalidValue;
 
     try {
         stream = ihipSyncAndResolveStream(stream);
@@ -380,8 +380,8 @@ hipError_t memcpyAsync(void* dst, const void* src, size_t sizeBytes,
 
 hipError_t memcpySync(void* dst, const void* src, size_t sizeBytes,
                       hipMemcpyKind kind, hipStream_t stream) {
-    if (!dst || !src) return hipErrorInvalidValue;
     if (sizeBytes == 0) return hipSuccess;
+    if (!dst || !src) return hipErrorInvalidValue;
 
     try {
         stream = ihipSyncAndResolveStream(stream);