Reply To: Waveforms not generated correctly (GHDL)

[Patrick]

Your GTKwave is propably too old. You have 3.3.104, whereas GTKwave is now at 3.3.121.

What platform do you use?
Linux, macOS, Windows, MSYS2, …?

As an alternative: https://surfer-project.org/
Unfortunately, the made there own GHW reader as far as I know. So it could be failing as well.

GHW is a waveform format from GHDL specially made for waveforms with VHDL datatypes. All other formats are variants of VCD (value change dump – part of the Verilog standard). These also have the limitations of Verilog data types.

You might experience these problems with OSVVM, because OSVVM makes use of almost all VHDL-2008 features in combination with lots of user defined types etc. So consider OSVVM as a VHDL-2008 user pushing the language (and the tools) to the edge :). OTOH, you get a powerful and brillant framework.