Fix some DecodeTrace UI issues

[pulseview.git] / pv / data / decode / row.cpp

diff --git a/pv/data/decode/row.cpp b/pv/data/decode/row.cpp
index e5972517a446bc7a47b0ba3a6238e257b91b8114..341c61dfd1fea3547bc3dab46fd1d965970e425b 100644 (file)
--- a/pv/data/decode/row.cpp
+++ b/pv/data/decode/row.cpp
@@ -75,11 +75,17 @@ const QString Row::description() const
 
 vector<AnnotationClass*> Row::ann_classes() const
 {
+       assert(decoder_);
+
        vector<AnnotationClass*> result;
 
-       if (!srd_row_)
+       if (!srd_row_) {
+               if (index_ == 0) {
+                       // When operating as the fallback row, all annotation classes belong to it
+                       return decoder_->ann_classes();
+               }
                return result;
-       assert(decoder_);
+       }
 
        for (GSList *l = srd_row_->ann_classes; l; l = l->next) {
                size_t class_id = (size_t)l->data;