VHDL311: “std” and “work” should not be set in library clauses

Summary

Reliability	Security	Maintainability	Code attribute	Effort to fix	Tags

-	-	LOW	Consistency \| Conventional	5min	synthesis, library, vscode, linter, simulation

Description

The VHDL standard states that every design unit is assumed to contain the following implicit context items as part of its context clause:

library STD, WORK;
use STD.STANDARD.all;

Thus, it is useless to include:

library clauses for std and work
use clauses such as use std.standard.all


Noncompliant code example
library ieee, std, work; -- Noncompliant: "std" and "work" should be removed from list
use std.standard.all; -- Noncompliant: use clause is useless and should be removed


Compliant solution
library ieee;



Parameters
No parameters.