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# HG changeset patch
# User A. Wilcox <AWilcox@Wilcox-Tech.com>
# Date 1729710191 18000
# Wed Oct 23 14:03:11 2024 -0500
# Node ID 6102585e0d752de1729135d4c7d917e751b268c5
# Parent 61f7d9c0998e2ce8008cd15b187f86dfdba21a26
Bug 1926667 - Ensure JSStructuredCloneReader::readTransferMap respects endianness r?sfink
Differential Revision: https://phabricator.services.mozilla.com/D226707
diff --git a/js/src/vm/StructuredClone.cpp b/js/src/vm/StructuredClone.cpp
--- a/js/src/vm/StructuredClone.cpp
+++ b/js/src/vm/StructuredClone.cpp
@@ -3387,7 +3387,8 @@ bool JSStructuredCloneReader::readTransf
}
headerPos.write(
- PairToUInt64(SCTAG_TRANSFER_MAP_HEADER, SCTAG_TM_TRANSFERRING));
+ NativeEndian::swapToLittleEndian(
+ PairToUInt64(SCTAG_TRANSFER_MAP_HEADER, SCTAG_TM_TRANSFERRING)));
uint64_t numTransferables;
MOZ_ALWAYS_TRUE(in.readPair(&tag, &data));
@@ -3512,7 +3513,8 @@ bool JSStructuredCloneReader::readTransf
MOZ_ASSERT(TransferableMapHeader(data) == SCTAG_TM_TRANSFERRING);
#endif
headerPos.write(
- PairToUInt64(SCTAG_TRANSFER_MAP_HEADER, SCTAG_TM_TRANSFERRED));
+ NativeEndian::swapToLittleEndian(
+ PairToUInt64(SCTAG_TRANSFER_MAP_HEADER, SCTAG_TM_TRANSFERRED)));
return true;
}
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