Quartus Pro 22.2: enum logic vs logic : Error(16983): arrays have different elements

[alexislms]

module tb;
  enum logic [7:0] {A, B, C} fsm [4];
  logic [7:0] state [4];
  assign state = fsm;
endmodule

Never had an issue with Vivado and never had an issue with Modelsim: https://www.edaplayground.com/x/S3Va

With Quartus Pro 22.2, I get Error(16983): arrays have different elements 

I believe this should be allowed by the specs.

Regards,

[RichardTanSY_Intel]

Let me check this with the engineering team.

[RichardTanSY_Intel]

Fyi, the engineering team is working on this.

Please do expect that any work involves engineering may takes some time depending on the issue complexity. 

Best Regards,

Richard Tan

[RichardTanSY_Intel]

May I know are these code for testbench usage?

[alexislms]

Not only, we mainly use it in our synthesizable code.

[RichardTanSY_Intel]

A workaround suggested by the engineering team is to change RTL a little bit.

By changing the assignment of unpacked type to bit by bit instead of complete.

for the given design example

module tb; 

 enum logic [7:0] {A, B, C} fsm [4];

 logic [7:0] state [4];

 assign state[0] = fsm[0];

 assign state[1] = fsm[1];

assign state[2] = fsm[2];

 assign state[3] = fsm[3];

//assign state = fsm;      

endmodule

The engineering team will check with the tool vendor on fixing this issue.

[alexislms]

@RichardTanSY_Intel  Thank you for the follow-up.

The workaround defeats the purpose of these data types, we will wait for the fix.

Regards,

[RichardTanSY_Intel]

Do you able to escape the error based on the last email that I sent?

[alexislms]

Can we expect this to be fixed in a new release?

[RichardTanSY_Intel · Accepted solution]

Yes, there is a plan to fix this but it may takes time and I do not have the exact detail on when it will be fix. As this is subject to change.

[alexislms]

Thank you, please feel free to close the case.

[RichardTanSY_Intel]

With that, I will now transition this thread to community support. If you have a new question, feel free to open a new thread to get the support from Intel experts. Otherwise, the community users will continue to help you on this thread. Thank you.

Best Regards,

Richard Tan

p/s: If any answer from the community or Intel Support are helpful, please feel free to give best answer or rate 9/10 survey.