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-rw-r--r--fxjs/cjs_document.cpp5
1 files changed, 3 insertions, 2 deletions
diff --git a/fxjs/cjs_document.cpp b/fxjs/cjs_document.cpp
index f682ffd636..adf36be403 100644
--- a/fxjs/cjs_document.cpp
+++ b/fxjs/cjs_document.cpp
@@ -740,8 +740,9 @@ CJS_Result CJS_Document::get_info(CJS_Runtime* pRuntime) {
pRuntime->PutObjectProperty(pObj, L"Trapped",
pRuntime->NewString(cwTrapped.AsStringView()));
- // It's to be compatible to non-standard info dictionary.
- for (const auto& it : *pDictionary) {
+ // PutObjectProperty() calls below may re-enter JS and change info dict.
+ auto pCopy = pDictionary->Clone();
+ for (const auto& it : *ToDictionary(pCopy.get())) {
const ByteString& bsKey = it.first;
CPDF_Object* pValueObj = it.second.get();
WideString wsKey = WideString::FromUTF8(bsKey.AsStringView());