Compiler Warning (level 3) C4359
Collapse the table of content
Expand the table of content
Important This document may not represent best practices for current development, links to downloads and other resources may no longer be valid. Current recommended version can be found here. ArchiveDisclaimer

Compiler Warning (level 3) C4359

Error Message

'type': actual alignment (8) is greater than the value specified in __declspec(align())

The alignment specified for a type is less than the alignment of the type of one of its data members. For more information, see align (C++).


The following sample generates C4359.

// C4359.cpp
// compile with: /W3 /c
struct __declspec(align(8)) C8 { __int64 i; };
struct __declspec(align(4)) C4  { C8 m8; };   // C4359
struct __declspec(align(8)) C8_b  { C8 m8; };   // OK
struct __declspec(align(16)) C16  { C8 m8; };   // OK
© 2015 Microsoft