unreachable-code.qdoc

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// Copyright (C) 2026 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GFDL-1.3-no-invariants-only
 
/*!
\page qmllint-warnings-and-errors-unreachable-code.html
\ingroup qmllint-warnings-and-errors
 
\title Unreachable code
\brief [unreachable-code] Some instructions are unreachable.
 
\qmllintwarningcategory unreachable-code
 
\section1 Unreachable code
 
\section2 What happened?
Instructions in your code are unreachable and will never be executed.
 
\section2 Why is that bad?
Unreachable code does not contribute to the program logic and bloats the disk
and memory footprint of the application. Unreachable code can be a sign of
underlying bugs or logic errors.
 
\section2 Example
\qml
function f(b: bool) : string {
    if (b)
        return "true"
    else
        return "false"
    return "something else??" // unreachable statement
}
\endqml
To fix this warning, remove the dead instructions or refactor your code to make
all logic reachable.
\qml
function f(b: bool) : string {
    if (b)
        return "true"
    else
        return "false"
}
\endqml
*/