Avoid mutual ownership in qstdweb's File::stream

The mutual ownership of chunkCompleted<->fileReader caused both not to be freed, which resulted in a memory leak. Resolve this by introducing the ChunkedFileReader class which owns itself until file read is finished. Also, resolve a similar issue in qwasmlocalfileaccess. Fixes: QTBUG-109436 Pick-to: 6.5 Change-Id: Ieec4cde15a893fa6a2e21a62d3bb6637374c5364 Reviewed-by: Morten Johan Sørvig <morten.sorvig@qt.io> 

1 files changed, 3 insertions, 3 deletions

diff --git a/src/plugins/platforms/wasm/qwasmdrag.cpp b/src/plugins/platforms/wasm/qwasmdrag.cpp
index 52c2ddb14e2..0f3aa9c751d 100644
--- a/src/plugins/platforms/wasm/qwasmdrag.cpp
+++ b/src/plugins/platforms/wasm/qwasmdrag.cpp
@@ -109,9 +109,9 @@ static void dropEvent(val event)
 QByteArray fileContent;
 fileContent.resize(file.size());

- file.stream(fileContent.data(), [=]() {
+ file.stream(fileContent.data(), [mimeFormat, fileContent]() {
 if (!fileContent.isEmpty()) {
-
+ QWasmDrag *wasmDrag = static_cast<QWasmDrag *>(QWasmIntegration::get()->drag());
 if (mimeFormat.contains("image")) {
 QImage image;
 image.loadFromData(fileContent, nullptr);
@@ -119,7 +119,7 @@ static void dropEvent(val event)
 } else {
 wasmDrag->m_mimeData->setData(mimeFormat, fileContent.data());
 }
- wasmDrag->qWasmDrop();
+ wasmDrag->qWasmDrop();
 }
 });