NVCC: work around compiler bug

diff --git a/include/deal.II/lac/petsc_matrix_base.h b/include/deal.II/lac/petsc_matrix_base.h
index 6c7d866ab6e2de31c375916ff237dffd37504aa3..4e87ac7d36b0d5ab37f3e2ddaf5e8ef17d8c40c0 100644 (file)
--- a/include/deal.II/lac/petsc_matrix_base.h
+++ b/include/deal.II/lac/petsc_matrix_base.h
@@ -68,7 +68,15 @@ namespace PETScWrappers
      */
     class const_iterator
     {
+#  ifdef __CUDA_ARCH__
+      // NVCC, at least until 12.6, fails to compile the
+      // implementations of the nested Accessor class if
+      // it is declared as private. Work around this by
+      // making it public.
+    public:
+#  else
     private:
+#  endif
       /**
        * Accessor class for iterators
        */