# Wcheck

Tells the compiler to perform compile-time code checking for certain code.

## Syntax

Linux and macOS: | -Wcheck

Windows: | /Wcheck

## Arguments

None

## Default

OFF | No compile-time code checking is performed.

## Description

This option tells the compiler to perform compile-time code checking for certain code. It specifies to check for code that exhibits non-portable behavior, represents a possible unintended code sequence, or possibly affects operation of the program because of a quiet change in the ANSI C Standard.

## IDE Equivalent

Visual Studio: None

Eclipse: Compilation Diagnostics > Allow Usage Messages

Xcode: Diagnostics > Allow Usage Messages

## Alternate Options

None

Parent topic: Compiler Diagnostic Options