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-rw-r--r--dom/indexedDB/ActorsParent.cpp23
1 files changed, 10 insertions, 13 deletions
diff --git a/dom/indexedDB/ActorsParent.cpp b/dom/indexedDB/ActorsParent.cpp
index a3dc710ed..58c113058 100644
--- a/dom/indexedDB/ActorsParent.cpp
+++ b/dom/indexedDB/ActorsParent.cpp
@@ -23,6 +23,7 @@
#include "mozilla/AppProcessChecker.h"
#include "mozilla/AutoRestore.h"
#include "mozilla/Casting.h"
+#include "mozilla/CheckedInt.h"
#include "mozilla/EndianUtils.h"
#include "mozilla/ErrorNames.h"
#include "mozilla/LazyIdleThread.h"
@@ -782,29 +783,25 @@ MakeCompressedIndexDataValues(
MOZ_ASSERT(!keyBuffer.IsEmpty());
- // Don't let |infoLength| overflow.
- if (NS_WARN_IF(UINT32_MAX - keyBuffer.Length() <
- CompressedByteCountForIndexId(info.mIndexId) +
- CompressedByteCountForNumber(keyBufferLength) +
- CompressedByteCountForNumber(sortKeyBufferLength))) {
- IDB_REPORT_INTERNAL_ERR();
- return NS_ERROR_DOM_INDEXEDDB_UNKNOWN_ERR;
- }
-
- const uint32_t infoLength =
- CompressedByteCountForIndexId(info.mIndexId) +
+ const CheckedUint32 infoLength =
+ CheckedUint32(CompressedByteCountForIndexId(info.mIndexId)) +
CompressedByteCountForNumber(keyBufferLength) +
CompressedByteCountForNumber(sortKeyBufferLength) +
keyBufferLength +
sortKeyBufferLength;
+ // Don't let |infoLength| overflow.
+ if (NS_WARN_IF(!infoLength.isValid())) {
+ IDB_REPORT_INTERNAL_ERR();
+ return NS_ERROR_DOM_INDEXEDDB_UNKNOWN_ERR;
+ }
// Don't let |blobDataLength| overflow.
- if (NS_WARN_IF(UINT32_MAX - infoLength < blobDataLength)) {
+ if (NS_WARN_IF(UINT32_MAX - infoLength.value() < blobDataLength)) {
IDB_REPORT_INTERNAL_ERR();
return NS_ERROR_DOM_INDEXEDDB_UNKNOWN_ERR;
}
- blobDataLength += infoLength;
+ blobDataLength += infoLength.value();
}
UniqueFreePtr<uint8_t> blobData(