Fix a bug with petsc in readwritevector.

diff --git a/include/deal.II/lac/read_write_vector.templates.h b/include/deal.II/lac/read_write_vector.templates.h
index 550c772ea8f0b60d6d457d0ae8a0015578d11f95..b8443166ba82ad728508115cccbfb04a1b26e093 100644 (file)
--- a/include/deal.II/lac/read_write_vector.templates.h
+++ b/include/deal.II/lac/read_write_vector.templates.h
@@ -145,7 +145,7 @@ namespace LinearAlgebra
     int ierr = VecGetArray (static_cast<const Vec &>(petsc_vec), &start_ptr);
     AssertThrow (ierr == 0, ExcPETScError(ierr));
 
-    const size_type vec_size = local_size();
+    const size_type vec_size = petsc_vec.local_size();
     internal::copy_petsc_vector (start_ptr, start_ptr + vec_size, begin());
 
     // restore the representation of the vector