VERILOG082: “output”, “inout” and “ref” directions should not be used in function arguments

Summary

Count: 1

Clear filters

Reliability	Security	Maintainability	Code attribute	Effort to fix	Tags
MEDIUM	-	-	Intentionality | Logical	20min	synthesis, vscode, lowrisc, linter

Description

output, inout and ref directions should not be used in function arguments in synthesizable code.

Articles & blog posts

• lowRISC Verilog Coding Style Guide - Language Features - Functions and Tasks

Noncompliant code example

function automatic logic [2:0] fly(
  logic [2:0] a,
  output logic [2:0] b // Noncompliant: 'b' argument has 'output' direction
);
  ...
endfunction

Compliant solution

function automatic logic [2:0] fly(
  logic [2:0] a,
  logic [2:0] b
);
  ...
endfunction

Parameters

No parameters.