Fixes

Author: franzpoeschel

src/IO/ADIOS/ADIOS2File.cpp

@@ -344,7 +344,11 @@ namespace
 
 size_t ADIOS2File::currentStep()
 {
-    if (nonpersistentEngine(m_impl->m_engineType))
+    if (auto step_selection = stepSelection(); step_selection.has_value())
+    {
+        return *step_selection;
+    }
+    else if (nonpersistentEngine(m_impl->m_engineType))
     {
         return m_currentStep;
     }

src/IO/ADIOS/ADIOS2IOHandler.cpp

@@ -1625,6 +1625,7 @@ void ADIOS2IOHandlerImpl::readAttributeAllsteps(
 
 #if OPENPMD_PREPARSE_EVERYTHING
     detail::ADIOS2File &ba = getFileData(file, IfFileNotOpen::ThrowError);
+    auto type = detail::attributeInfo(ba.m_IO, name, /* verbose = */ true);
 #if openPMD_HAVE_MPI
     auto adios = [&]() {
         if (m_communicator.has_value())
@@ -1662,11 +1663,7 @@ void ADIOS2IOHandlerImpl::readAttributeAllsteps(
     engine.Close();
     auto &attributes = ba.attributes();
     switchType<ReadAttributeAllstepsFullPreparsing>(
-        preload.at(0).attributeType(param.name),
-        preload,
-        IO,
-        param.name,
-        *param.resource);
+        type, preload, IO, name, *param.resource);
     attributes.m_data = std::move(preload);
 #else
     auto read_from_file_in_serial = [&]() {

test/SerialIOTest.cpp

@@ -5950,11 +5950,8 @@ void variableBasedSeries(std::string const &file)
             {
                 REQUIRE(
                     iteration.getAttribute("changing_value").get<unsigned>() ==
-                    (supportsModifiableAttributes
-                         ? (access == Access::READ_LINEAR
-                                ? iteration.iterationIndex
-                                : 9)
-                         : 0));
+                    (supportsModifiableAttributes ? iteration.iterationIndex
+                                                  : 0));
             }
             auto E_x = iteration.meshes["E"]["x"];
             REQUIRE(E_x.getDimensionality() == 1);