From ce8c33e710a9003a1912ab09fc31417b50b7a4b5 Mon Sep 17 00:00:00 2001
From: Lorn Potter <lorn.potter@gmail.com>
Date: Wed, 10 Jun 2020 13:24:51 +1000
Subject: [PATCH] wasm: fix network POST data corruption
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Emscripten does not like when the post data gets deleted in the local
scope.

Fixes: QTBUG-84685
Pick-to: 5.15
Change-Id: I17f9d5cc3253c26b42253daa68e2fbaccc48eaf6
Reviewed-by: Morten Johan Sørvig <morten.sorvig@qt.io>
---
 src/network/access/qnetworkreplywasmimpl.cpp | 9 ++++-----
 src/network/access/qnetworkreplywasmimpl_p.h | 1 +
 2 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/src/network/access/qnetworkreplywasmimpl.cpp b/src/network/access/qnetworkreplywasmimpl.cpp
index 7cb197c3e57..a1779146f48 100644
--- a/src/network/access/qnetworkreplywasmimpl.cpp
+++ b/src/network/access/qnetworkreplywasmimpl.cpp
@@ -231,11 +231,10 @@ void QNetworkReplyWasmImplPrivate::doSendRequest()
 
     if (outgoingData) { // data from post request
         // handle extra data
-        QByteArray extraData;
-        extraData = outgoingData->readAll(); // is there a size restriction here?
-        if (!extraData.isEmpty()) {
-            attr.requestData = extraData.constData();
-            attr.requestDataSize = extraData.size();
+        requestData = outgoingData->readAll(); // is there a size restriction here?
+        if (!requestData.isEmpty()) {
+            attr.requestData = requestData.data();
+            attr.requestDataSize = requestData.size();
         }
     }
 
diff --git a/src/network/access/qnetworkreplywasmimpl_p.h b/src/network/access/qnetworkreplywasmimpl_p.h
index 0a62e8ad37a..f8e532ff98c 100644
--- a/src/network/access/qnetworkreplywasmimpl_p.h
+++ b/src/network/access/qnetworkreplywasmimpl_p.h
@@ -135,6 +135,7 @@ public:
 
     QIODevice *outgoingData;
     QSharedPointer<QRingBuffer> outgoingDataBuffer;
+    QByteArray requestData;
 
     void doAbort() const;