Clean up circular references in QPDF_Stream

2 files changed, 10 insertions, 0 deletions

diff --git a/libqpdf/QPDF_Stream.cc b/libqpdf/QPDF_Stream.cc
index bcf9be92..27c6b477 100644
--- a/libqpdf/QPDF_Stream.cc
+++ b/libqpdf/QPDF_Stream.cc
@@ -45,6 +45,13 @@ QPDF_Stream::~QPDF_Stream()
 }
 
 void
+QPDF_Stream::releaseResolved()
+{
+    this->stream_provider = 0;
+    QPDFObjectHandle::ReleaseResolver::releaseResolved(this->stream_dict);
+}
+
+void
 QPDF_Stream::setObjGen(int objid, int generation)
 {
     if (! ((this->objid == 0) && (this->generation == 0)))
diff --git a/libqpdf/qpdf/QPDF_Stream.hh b/libqpdf/qpdf/QPDF_Stream.hh
index 8b960f00..a2bd5d61 100644
--- a/libqpdf/qpdf/QPDF_Stream.hh
+++ b/libqpdf/qpdf/QPDF_Stream.hh
@@ -43,6 +43,9 @@ class QPDF_Stream: public QPDFObject
     // when adding streams to files.
     void setObjGen(int objid, int generation);
 
+  protected:
+    virtual void releaseResolved();
+
   private:
     static std::map<std::string, std::string> filter_abbreviations;