Why is this an issue?

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



How to fix it
Code examples
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;