[Moved]Xilinx Vivado compiler problem or systemverilog declaration error

[dpaul]

Hi all,

I am trying to simulate a uP core defined in sv using Xilinx Vivado suite.

However I get an error message for which I cannot find a fault.

Error: "[VRFC 10-301] an enum variable may only be assigned to same enum typed variable or one of its values"

This error message points to the part of the code as below:

`ifdef MPU_EN
    output  logic   [ ARCHITECTURE_BASE-1:0]      dmem_rd_check_addr,
    output  type_operation_mode_e                           dmem_rd_check_size,  <-- ERROR line
`endif

Note that in the above error line, the variable 'dmem_rd_check_size' is allocated to type 'type_operation_mode_e'.

I have the 'type_operation_mode_e' defined in an `include file as follows:

typedef enum logic [1:0] {
    DATA_MODE_BYTE,
    DATA_MODE_WORD,
    DATA_MODE_DWORD,
    DATA_MODE_X=2'bxx
} type_operation_mode_e;

I have checked this entire file/code and no where is there an illegal assignment for 'dmem_rd_check_size'.
Then why is the Vivado simulator throwing such an error?

I have hit a wall. Please help or advice.