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-rw-r--r--js/src/vm/StructuredClone.cpp7
1 files changed, 4 insertions, 3 deletions
diff --git a/js/src/vm/StructuredClone.cpp b/js/src/vm/StructuredClone.cpp
index 4b01cda85..3a062c3b8 100644
--- a/js/src/vm/StructuredClone.cpp
+++ b/js/src/vm/StructuredClone.cpp
@@ -2188,12 +2188,14 @@ JSStructuredCloneReader::readHeader()
return in.reportTruncated();
if (tag != SCTAG_HEADER) {
- // Old structured clone buffer. We must have read it from disk or
- // somewhere, so we can assume it's scope-compatible.
+ // Old structured clone buffer. We must have read it from disk.
+ storedScope = JS::StructuredCloneScope::DifferentProcess;
return true;
}
MOZ_ALWAYS_TRUE(in.readPair(&tag, &data));
+ storedScope = JS::StructuredCloneScope(data);
+
if (data != uint32_t(JS::StructuredCloneScope::SameProcessSameThread) &&
data != uint32_t(JS::StructuredCloneScope::SameProcessDifferentThread) &&
data != uint32_t(JS::StructuredCloneScope::DifferentProcess))
@@ -2202,7 +2204,6 @@ JSStructuredCloneReader::readHeader()
"invalid structured clone scope");
return false;
}
- storedScope = JS::StructuredCloneScope(data);
if (storedScope < allowedScope) {
JS_ReportErrorNumberASCII(context(), GetErrorMessage, nullptr, JSMSG_SC_BAD_SERIALIZED_DATA,
"incompatible structured clone scope");