Developer Guide and Reference

Contents

fpack-struct

Specifies that structure members should be packed together.

Syntax

Linux:
-fpack-struct
macOS:
-fpack-struct
Windows:
None
Arguments
None
Default
OFF
Description
Specifies that structure members should be packed together.
Using this option may result in code that is not usable with standard (system) c and C++ libraries.
Alternate Options
Linux
and
macOS*
:
-Zp1
Windows: None

Product and Performance Information

1

Intel's compilers may or may not optimize to the same degree for non-Intel microprocessors for optimizations that are not unique to Intel microprocessors. These optimizations include SSE2, SSE3, and SSSE3 instruction sets and other optimizations. Intel does not guarantee the availability, functionality, or effectiveness of any optimization on microprocessors not manufactured by Intel. Microprocessor-dependent optimizations in this product are intended for use with Intel microprocessors. Certain optimizations not specific to Intel microarchitecture are reserved for Intel microprocessors. Please refer to the applicable product User and Reference Guides for more information regarding the specific instruction sets covered by this notice.

Notice revision #20110804