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Diffstat (limited to 'core/fpdfapi/fpdf_parser/cpdf_reference.cpp')
-rw-r--r--core/fpdfapi/fpdf_parser/cpdf_reference.cpp14
1 files changed, 12 insertions, 2 deletions
diff --git a/core/fpdfapi/fpdf_parser/cpdf_reference.cpp b/core/fpdfapi/fpdf_parser/cpdf_reference.cpp
index afda50c324..4e7b3786d3 100644
--- a/core/fpdfapi/fpdf_parser/cpdf_reference.cpp
+++ b/core/fpdfapi/fpdf_parser/cpdf_reference.cpp
@@ -7,6 +7,7 @@
#include "core/fpdfapi/fpdf_parser/include/cpdf_reference.h"
#include "core/fpdfapi/fpdf_parser/include/cpdf_indirect_object_holder.h"
+#include "third_party/base/stl_util.h"
CPDF_Reference::CPDF_Reference(CPDF_IndirectObjectHolder* pDoc, int objnum)
: m_pObjList(pDoc), m_RefObjNum(objnum) {}
@@ -49,10 +50,19 @@ const CPDF_Reference* CPDF_Reference::AsReference() const {
return this;
}
-CPDF_Object* CPDF_Reference::Clone(FX_BOOL bDirect) const {
+CPDF_Object* CPDF_Reference::Clone() const {
+ return CloneObjectNonCyclic(false);
+}
+
+CPDF_Object* CPDF_Reference::CloneNonCyclic(
+ bool bDirect,
+ std::set<const CPDF_Object*>* pVisited) const {
+ pVisited->insert(this);
if (bDirect) {
auto* pDirect = GetDirect();
- return pDirect ? pDirect->Clone(TRUE) : nullptr;
+ return pDirect && !pdfium::ContainsKey(*pVisited, pDirect)
+ ? pDirect->CloneNonCyclic(true, pVisited)
+ : nullptr;
}
return new CPDF_Reference(m_pObjList, m_RefObjNum);
}