diff --git a/tests/dsp/platform.cpp b/tests/dsp/platform.cpp
index e937dec..bd615c3 100644
--- a/tests/dsp/platform.cpp
+++ b/tests/dsp/platform.cpp
@@ -3539,10 +3539,8 @@
     uint8_t eventReceiverAddressInfo = 0x08;
     uint16_t heartbeatTimer = 0x78;
 
-    std::vector<uint8_t> requestMsg(hdrSize +
-                                    PLDM_SET_EVENT_RECEIVER_REQ_BYTES);
-    // NOLINTNEXTLINE(cppcoreguidelines-pro-type-reinterpret-cast)
-    auto request = reinterpret_cast<pldm_msg*>(requestMsg.data());
+    PLDM_MSG_DEFINE_P(request, PLDM_SET_EVENT_RECEIVER_REQ_BYTES +
+                                   PLDM_SET_EVENT_RECEIVER_REQ_HEARTBEAT_BYTES);
 
     auto rc = encode_set_event_receiver_req(
         0, eventMessageGlobalEnable, transportProtocolType,
@@ -3566,10 +3564,8 @@
     uint8_t eventReceiverAddressInfo = 0x08;
     uint16_t heartbeatTimer = 0;
 
-    std::vector<uint8_t> requestMsg(hdrSize +
-                                    PLDM_SET_EVENT_RECEIVER_REQ_BYTES);
-    // NOLINTNEXTLINE(cppcoreguidelines-pro-type-reinterpret-cast)
-    auto request = reinterpret_cast<pldm_msg*>(requestMsg.data());
+    PLDM_MSG_DEFINE_P(request, PLDM_SET_EVENT_RECEIVER_REQ_BYTES +
+                                   PLDM_SET_EVENT_RECEIVER_REQ_HEARTBEAT_BYTES);
 
     auto rc = encode_set_event_receiver_req(
         0, eventMessageGlobalEnable, transportProtocolType,
@@ -3639,9 +3635,8 @@
 
 TEST(SetEventReceiver, testGoodDecodeRequest)
 {
-
-    std::array<uint8_t, hdrSize + PLDM_SET_EVENT_RECEIVER_REQ_BYTES>
-        requestMsg{};
+    PLDM_MSG_DEFINE_P(request, PLDM_SET_EVENT_RECEIVER_REQ_BYTES +
+                                   PLDM_SET_EVENT_RECEIVER_REQ_HEARTBEAT_BYTES);
 
     uint8_t eventMessageGlobalEnable =
         PLDM_EVENT_MESSAGE_GLOBAL_ENABLE_ASYNC_KEEP_ALIVE;
@@ -3649,8 +3644,6 @@
     uint8_t eventReceiverAddressInfo = 0x08;
     uint16_t heartbeatTimer = 0x78;
 
-    // NOLINTNEXTLINE(cppcoreguidelines-pro-type-reinterpret-cast)
-    auto request = reinterpret_cast<pldm_msg*>(requestMsg.data());
     struct pldm_set_event_receiver_req* req =
         // NOLINTNEXTLINE(cppcoreguidelines-pro-type-reinterpret-cast)
         reinterpret_cast<struct pldm_set_event_receiver_req*>(request->payload);
@@ -3665,9 +3658,11 @@
     uint8_t reteventReceiverAddressInfo;
     uint16_t retheartbeatTimer;
     auto rc = decode_set_event_receiver_req(
-        request, requestMsg.size() - hdrSize, &reteventMessageGlobalEnable,
-        &rettransportProtocolType, &reteventReceiverAddressInfo,
-        &retheartbeatTimer);
+        request,
+        PLDM_SET_EVENT_RECEIVER_REQ_BYTES +
+            PLDM_SET_EVENT_RECEIVER_REQ_HEARTBEAT_BYTES,
+        &reteventMessageGlobalEnable, &rettransportProtocolType,
+        &reteventReceiverAddressInfo, &retheartbeatTimer);
 
     EXPECT_EQ(rc, PLDM_SUCCESS);
     EXPECT_EQ(eventMessageGlobalEnable, reteventMessageGlobalEnable);
@@ -3678,11 +3673,14 @@
 
 TEST(SetEventReceiver, testBadDecodeRequest)
 {
-    std::array<uint8_t, hdrSize + PLDM_SET_EVENT_RECEIVER_REQ_BYTES>
-        requestMsg{};
+    PLDM_MSG_DEFINE_P(request, PLDM_SET_EVENT_RECEIVER_REQ_BYTES +
+                                   PLDM_SET_EVENT_RECEIVER_REQ_HEARTBEAT_BYTES);
 
-    auto rc = decode_set_event_receiver_req(NULL, requestMsg.size() - hdrSize,
-                                            NULL, NULL, NULL, NULL);
+    auto rc = decode_set_event_receiver_req(
+        NULL,
+        PLDM_SET_EVENT_RECEIVER_REQ_BYTES +
+            PLDM_SET_EVENT_RECEIVER_REQ_HEARTBEAT_BYTES,
+        NULL, NULL, NULL, NULL);
     EXPECT_EQ(rc, PLDM_ERROR_INVALID_DATA);
 
     uint8_t eventMessageGlobalEnable =
@@ -3691,8 +3689,6 @@
     uint8_t eventReceiverAddressInfo = 0x08;
     uint16_t heartbeatTimer = 0x78;
 
-    // NOLINTNEXTLINE(cppcoreguidelines-pro-type-reinterpret-cast)
-    auto request = reinterpret_cast<pldm_msg*>(requestMsg.data());
     struct pldm_set_event_receiver_req* req =
         // NOLINTNEXTLINE(cppcoreguidelines-pro-type-reinterpret-cast)
         reinterpret_cast<struct pldm_set_event_receiver_req*>(request->payload);
@@ -3706,11 +3702,24 @@
     uint8_t rettransportProtocolType;
     uint8_t reteventReceiverAddressInfo;
     uint16_t retheartbeatTimer;
+
+#ifdef NDEBUG
     rc = decode_set_event_receiver_req(
-        request, requestMsg.size() - hdrSize - 1, &reteventMessageGlobalEnable,
-        &rettransportProtocolType, &reteventReceiverAddressInfo,
-        &retheartbeatTimer);
+        request,
+        PLDM_SET_EVENT_RECEIVER_REQ_BYTES +
+            PLDM_SET_EVENT_RECEIVER_REQ_HEARTBEAT_BYTES - 1,
+        &reteventMessageGlobalEnable, &rettransportProtocolType,
+        &reteventReceiverAddressInfo, &retheartbeatTimer);
     EXPECT_EQ(rc, PLDM_ERROR_INVALID_LENGTH);
+#else
+    EXPECT_DEATH(decode_set_event_receiver_req(
+                     request,
+                     PLDM_SET_EVENT_RECEIVER_REQ_BYTES +
+                         PLDM_SET_EVENT_RECEIVER_REQ_HEARTBEAT_BYTES - 1,
+                     &reteventMessageGlobalEnable, &rettransportProtocolType,
+                     &reteventReceiverAddressInfo, &retheartbeatTimer),
+                 "ctx->remaining >= 0");
+#endif
 }
 
 TEST(decodeNumericSensorPdrData, Uint8Test)