# wo, Qwo

Tells the compiler to issue one or more diagnostic messages only once. This is a deprecated option that may be removed in a future release.

## Syntax

Linux and macOS: | -wo Ln[,Ln,...]

Windows: | /Qwo Ln[,Ln,...]

## Arguments

Ln | Is the number of the diagnostic.

## Default

OFF |

## Description

Specifies the ID number of one or more messages. If you specify more than one Ln, each Ln must be separated by a comma.

This is a deprecated option that may be removed in a future release. The replacement option is [Q]diag-once id.

## IDE Equivalent

None

## Alternate Options

Linux and macOS: -diag-once id

Windows: /Qdiag-once:id

Parent topic: Compiler Diagnostic Options