Specifies that structure members should be packed together.
IA-32, Intel® 64 architectures
Linux and Mac OS X:  | -fpack-struct  | 
Windows:  | None  | 
None
OFF  | 
Specifies that structure members should be packed together. Note: Using this option may result in code that is not usable with standard (system) c and C++ libraries.
-Zp1
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