Change return type of QPDF::resolve to void

include/qpdf/QPDF.hh

@@ -846,10 +846,10 @@ class QPDF
         friend class QPDFObjectHandle;
 
       private:
-        static std::shared_ptr<QPDFObject>
+        static void
         resolve(QPDF* qpdf, QPDFObjGen const& og)
         {
-            return qpdf->resolve(og);
+            qpdf->resolve(og);
         }
     };
     friend class Resolver;
@@ -1168,7 +1168,7 @@ class QPDF
         std::string const& description,
         QPDFObjGen const& exp_og,
         QPDFObjGen& og);
-    std::shared_ptr<QPDFObject> resolve(QPDFObjGen const& og);
+    void resolve(QPDFObjGen const& og);
     void resolveObjectsInStream(int obj_stream_number);
     void stopOnError(std::string const& message);
     QPDFObjectHandle reserveObjectIfNotExists(QPDFObjGen const& og);

libqpdf/QPDF.cc

@@ -1926,12 +1926,12 @@ QPDF::readObjectAtOffset(
     return oh;
 }
 
-std::shared_ptr<QPDFObject>
+void
 QPDF::resolve(QPDFObjGen const& og)
 {
     if (isCached(og) && !isUnresolved(og)) {
         // We only need to resolve unresolved objects
-        return m->obj_cache[og].object;
+        return;
     }
 
     // Check object cache before checking xref table.  This allows us
@@ -1947,9 +1947,8 @@ QPDF::resolve(QPDFObjGen const& og)
             "",
             this->m->file->getLastOffset(),
             ("loop detected resolving object " + og.unparse(' ')));
-
         updateCache(og, QPDF_Null::create(), -1, -1);
-        return m->obj_cache[og].object;
+        return;
     }
     ResolveRecorder rr(this, og);
 
@@ -1998,11 +1997,10 @@ QPDF::resolve(QPDFObjGen const& og)
         updateCache(og, QPDF_Null::create(), -1, -1);
     }
 
-    std::shared_ptr<QPDFObject> result(this->m->obj_cache[og].object);
+    auto result(this->m->obj_cache[og].object);
     if (!result->hasDescription()) {
         result->setDescription(this, ("object " + og.unparse(' ')));
     }
-    return result;
 }
 
 void

libqpdf/QPDFObjectHandle.cc

@@ -2596,7 +2596,7 @@ QPDFObjectHandle::dereference()
         return false;
     }
     if (this->obj->isUnresolved()) {
-        this->obj = QPDF::Resolver::resolve(this->qpdf, getObjGen());
+        QPDF::Resolver::resolve(this->qpdf, getObjGen());
     }
     return true;
 }