check-pointers-mpx, Qcheck-pointers-mpx

Determines whether the compiler checks bounds for memory access through pointers on processors that support Intel® Memory Protection Extensions (Intel® MPX).

Architecture Restrictions

Not available on Intel® 64 architecture targeting Intel® MIC Architecture, or on IA-32 architecture targeting Intel® Graphics Technology

Syntax

Linux OS:

-check-pointers-mpx=keyword

OS X:

None

Windows OS:

/Qcheck-pointers-mpx:keyword

Arguments

keyword

Specifies what type of bounds checking occurs. Possible values are:

none	Disables bounds checking. This is the default.
rw	Checks bounds for reads and writes through pointers.
write	Checks bounds for only writes through pointers.

Default

-check-pointers-mpx=none or /Qcheck-pointers-mpx:none

No bounds checking occurs for memory access through pointers on processors that support Intel® MPX.

Description

This option determines whether the compiler checks bounds for memory access through pointers on processors that support Intel® MPX. It enables checking of all indirect accesses through pointers, and all array accesses.

The compiler may optimize these checks away when it can determine that an access is safe.

If you specify option [Q]check-pointers along with option [Q]check-pointers-mpx, option [Q]check-pointers-mpx takes precedence.

If you specify [Q]check-pointers-mpx, you cannot specify option [Q]check-pointers-dangling.

This pointer checker feature requires installation of another product. For more information, see Feature Requirements.

IDE Equivalent

Windows: Code Generation > Check Pointers

Linux: Code Generation > Check Pointers

OS X: None

Alternate Options