diag, Qdiag

Controls the display of diagnostic information.

Syntax

Linux OS and OS X:

-diag-type diag-list

Windows OS:

/Qdiag-type:diag-list

type

Is an action to perform on diagnostics. Possible values are:

enable	Enables a diagnostic message or a group of messages.
disable	Disables a diagnostic message or a group of messages.
error	Tells the compiler to change diagnostics to errors.
warning	Tells the compiler to change diagnostics to warnings.
remark	Tells the compiler to change diagnostics to remarks (comments).

diag-list

Is a diagnostic group or ID value. Possible values are:

driver	Specifies diagnostic messages issued by the compiler driver.
vec	Specifies diagnostic messages issued by the vectorizer.
par	Specifies diagnostic messages issued by the auto-parallelizer (parallel optimizer).
openmp	Specifies diagnostic messages issued by the OpenMP* parallelizer.
warn	Specifies diagnostic messages that have a "warning" severity level.
error	Specifies diagnostic messages that have an "error" severity level.
remark	Specifies diagnostic messages that are remarks or comments.
cpu-dispatch	Specifies the CPU dispatch remarks for diagnostic messages. These remarks are enabled by default.
id[,id,...]	Specifies the ID number of one or more messages. If you specify more than one message number, they must be separated by commas. There can be no intervening white space between each id.
tag[,tag,...]	Specifies the mnemonic name of one or more messages. If you specify more than one mnemonic name, they must be separated by commas. There can be no intervening white space between each tag.

The diagnostic messages generated can be affected by certain options, such as [Q]x, /arch (Windows) or -m (Linux and OS X).

OFF	The compiler issues certain diagnostic messages by default.

This option controls the display of diagnostic information. Diagnostic messages are output to stderr unless the [Q]diag-file option is specified.

When diag-list value warn is used with static analysis diagnostics, the following behavior occurs:

Option [Q]diag-enable warn (Linux OS) and /Qdiag-enable:warn (Windows OS) enable all diagnostics except those that have an "error" severity level. They enable all static analysis warnings, cautions, and remarks.
Option -diag-disable warn (Linux OS) and /Qdiag-disable:warn (Windows OS) disable all static analysis diagnostics except those that have an "error" severity level. They suppress all static analysis warnings, cautions, and remarks.

To control the diagnostic information reported by the vectorizer, use the [Q]vec-report option.

To control the diagnostic information reported by the auto-parallelizer, use the [Q]par-report option.

Windows: Diagnostics > Disable Specific Diagnostics (/Qdiag-disable:id)

Linux: None

OS X: Diagnostics > Disable Specific Diagnostics (-diag-disable id)

enable vec	Linux and OS X: -vec-report Windows: /Qvec-report
disable vec	Linux and OS X: -vec-report0 Windows: /Qvec-report0
enable par	Linux and OS X: -par-report Windows: /Qpar-report
disable par	Linux and OS X: -par-report0 Windows: /Qpar-report0

The following example shows how to enable diagnostic IDs 117, 230 and 450:

-diag-enable 117,230,450     ! Linux and OS X systems

/Qdiag-enable:117,230,450    ! Windows systems

The following example shows how to change vectorizer diagnostic messages to warnings:

-diag-enable vec -diag-warning vec      ! Linux and OS X systems

/Qdiag-enable:vec /Qdiag-warning:vec    ! Windows systems

Note that you need to enable the vectorizer diagnostics before you can change them to warnings.

The following example shows how to disable all auto-parallelizer diagnostic messages:

-diag-disable par     ! Linux and OS X systems

/Qdiag-disable:par    ! Windows systems

The following example shows how to change all diagnostic warnings and remarks to errors:

-diag-error warn,remark    ! Linux and OS X systems

/Qdiag-error:warn,remark   ! Windows systems