/*AUTOWIRE*/ is ignoring existing declaring of typedef objectss

[afuller525]

I am attempting to use user-defined struct objects on the port list of a submodule. I discovered that /AUTOWIRE/ is failing to notice if an intermediate bus is already defined if it is of a user-defined type. This leads to the bus being added to the automatic wire list unnecessarily, and then the compiler gives a redeclaration error.

Below is a very contrived and simplified example. In the top module, the object "b" gets added to the automatic wires list even though it is already declared in this module scope.

<<>>

module top (c, a);

typedef struct {
logic   x;
logic   y;
} mystruct_t;

/*AUTOOUTPUT*/
// Beginning of automatic outputs (from unused autoinst outputs)
output mystruct_t   c;          // From inst1 of submod.v
// End of automatics

/*AUTOINPUT*/
// Beginning of automatic inputs (from unused autoinst inputs)
input mystruct_t    a;          // To inst0 of submod.v
// End of automatics

// Wire declarations
mystruct_t b;

/*AUTOWIRE*/
// Beginning of automatic wires (for undeclared instantiated-module outputs)
mystruct_t      b;          // From inst0 of submod.v
// End of automatics

/* submod AUTO_TEMPLATE (
 .out   (b[]),
 .in    (a[]),
 ); */    
submod  inst0
(// Outputs
 /*AUTOINST*/
 // Outputs
 .out               (b),             // Templated
 // Inputs
 .in                (a));            // Templated

/* submod AUTO_TEMPLATE (
 .out   (c[]),
 .in    (b[]),
 ); */    
submod  inst1
(/*AUTOINST*/
 // Outputs
 .out               (c),             // Templated
 // Inputs
 .in                (b));            // Templated

endmodule // Local Variables: // verilog-typedef-regexp: "_t$" // End:

<<>>

module submod (out, in); typedef struct { logic x; logic y; } mystruct_t;

output mystruct_t   out;
input mystruct_t    in;

assign      out = ~in;

endmodule // Local Variables: // verilog-typedef-regexp: "_t$" // End:

Thanks for your help.

[wsnyder]

I don't see the AUTOWIRE declaring mystruct_t. Are you sure you are using the most recent version of verilog-mode?

[afuller525]

I apologize, it looks like my company is using a very old version (840). I tested a local override with the newest version and the problem is resolved.

Thanks.