Compiler Warning (level 1) C4103
'filename' : alignment changed after including header, may be due to missing #pragma pack(pop)
Packing affects the layout of classes, and commonly, if packing changes across header files, there can be problems.
Use #pragma pack(pop) before exiting the header file to resolve this warning.
The following sample generates C4103:
// C4103.h #pragma pack(push, 4) // defintions and declarations // uncomment the following line to resolve // #pragma pack(pop)
// C4103.cpp // compile with: /LD /W1 #include "c4103.h" // C4103