Incomplete read STEP with special 'COMPOUND_REPRESENTATION_ITEM'

[wsw0108]

Description

1. read file nist_ctc_05_asme1_ap242-e1.stp
2. try handle StepRepr_CompoundRepresentationItem in this file
3. got null item_element

related lines:

#14000=COMPOUND_REPRESENTATION_ITEM('',SET_REPRESENTATION_ITEM((#14001)));
#14001=DESCRIPTIVE_REPRESENTATION_ITEM('dimensional note','statistical');

Expected Behavior

Can get correct item_element for entity #14000.

Actual Behavior

Got item_element is null.

Sample Code or DRAW Tcl Script

int main() {
    auto reader = std::make_shared<STEPControl_Reader>();
    auto status = reader->ReadFile(filePath.data());
    auto model = reader->StepModel();

    for (int i = 1; i <= model->NbEntities(); i++) {
        auto entity = model.Model()->Entity(i);
        if (!entity->IsInstance(STANDARD_TYPE(StepRepr_CompoundRepresentationItem))) {
            continue;
        }
        auto item = Handle(StepRepr_CompoundRepresentationItem)::DownCast(entity);
        if (item->NbItemElement() > 0) {
            for (int n = 1; n <= item->NbItemElement(); n++) {
                auto element = item->ItemElementValue(n);
                // handle element, but element is NULL
            }
        }
    }

    return 0;
}

Operating System

Windows

Compiler

MSVC

Bitness

64-bit

OCCT Version

7.9

Additional Files

nist_ctc_05_asme1_ap242-e1.stp in NIST-PMI-STEP-Files