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path: root/core/fpdfapi/page/cpdf_allstates.cpp
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Diffstat (limited to 'core/fpdfapi/page/cpdf_allstates.cpp')
-rw-r--r--core/fpdfapi/page/cpdf_allstates.cpp3
1 files changed, 2 insertions, 1 deletions
diff --git a/core/fpdfapi/page/cpdf_allstates.cpp b/core/fpdfapi/page/cpdf_allstates.cpp
index 9af904cb5d..3e6692b223 100644
--- a/core/fpdfapi/page/cpdf_allstates.cpp
+++ b/core/fpdfapi/page/cpdf_allstates.cpp
@@ -39,7 +39,8 @@ void CPDF_AllStates::SetLineDash(CPDF_Array* pArray, float phase, float scale) {
void CPDF_AllStates::ProcessExtGS(CPDF_Dictionary* pGS,
CPDF_StreamContentParser* pParser) {
- for (const auto& it : *pGS) {
+ CPDF_DictionaryLocker locker(pGS);
+ for (const auto& it : locker) {
const ByteString& key_str = it.first;
CPDF_Object* pElement = it.second.get();
CPDF_Object* pObject = pElement ? pElement->GetDirect() : nullptr;