fix attempt to save and rethrow exception

Change-Id: Idff6ffef536d87d85f1092b3316d65da83527711
Reviewed-on: https://gerrit.libreoffice.org/45229Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>

package/source/zipapi/XBufferedThreadedStream.cxx

@@ -9,6 +9,7 @@
 
 #include "XBufferedThreadedStream.hxx"
 #include <com/sun/star/packages/zip/ZipIOException.hpp>
+#include <cppuhelper/exc_hlp.hxx>
 
 using namespace css::uno;
 using com::sun::star::packages::zip::ZipIOException;
@@ -27,20 +28,10 @@ private:
         {
             mxStream.produce();
         }
-        catch( const RuntimeException &e )
-        {
-            SAL_WARN("package", "RuntimeException from unbuffered Stream " << e );
-            mxStream.saveException( new RuntimeException( e ) );
-        }
-        catch( const ZipIOException &e )
-        {
-            SAL_WARN("package", "ZipIOException from unbuffered Stream " << e );
-            mxStream.saveException( new ZipIOException( e ) );
-        }
-        catch( const Exception &e )
+        catch (const css::uno::Exception &e)
         {
             SAL_WARN("package", "Unexpected " << e );
-            mxStream.saveException( new Exception( e ) );
+            mxStream.saveException(cppu::getCaughtException());
         }
 
         mxStream.setTerminateThread();
@@ -58,7 +49,6 @@ XBufferedThreadedStream::XBufferedThreadedStream(
 , mnOffset( 0 )
 , mxUnzippingThread( new UnzippingThread(*this) )
 , mbTerminateThread( false )
-, maSavedException( nullptr )
 {
     mxUnzippingThread->launch();
 }
@@ -116,8 +106,8 @@ const Buffer& XBufferedThreadedStream::getNextBlock()
         if( maPendingBuffers.empty() )
         {
             maInUseBuffer = Buffer();
-            if( maSavedException )
-                throw *maSavedException;
+            if (maSavedException.hasValue())
+                cppu::throwException(maSavedException);
         }
         else
         {

package/source/zipapi/XBufferedThreadedStream.hxx

@@ -37,7 +37,7 @@ private:
     std::condition_variable maBufferProduceResume;
     bool mbTerminateThread;                                 /// indicates the failure of one of the threads
 
-    css::uno::Exception *maSavedException;                  /// exception caught during unzipping is saved to be thrown during reading
+    css::uno::Any maSavedException;                         /// exception caught during unzipping is saved to be thrown during reading
 
     static const size_t nBufferLowWater = 2;
     static const size_t nBufferHighWater = 4;
@@ -66,7 +66,7 @@ public:
 
     void produce();
     void setTerminateThread();
-    void saveException( css::uno::Exception *e ) { maSavedException = e; }
+    void saveException(const css::uno::Any &rAny) { maSavedException = rAny; }
 
     // XInputStream
     virtual sal_Int32 SAL_CALL readBytes( css::uno::Sequence< sal_Int8 >& aData, sal_Int32 nBytesToRead ) override;