Structure Alignment Question

[TheFrankDMartinez]

Hello,

The C11 and C++11 standards include alignment-specifiers using '_Alignas()' and 'alignas()', respectively. The standards also say alignment-specifiers may be used on structure declarations/definitions. Where might I find information indicating the default alignment of a structure? The standards do not appear to contain any such information.

[Peter87]

You probably want to use the alignof operator.

http://en.cppreference.com/w/cpp/language/alignof

[keskiverto]

Perhaps: http://en.cppreference.com/w/cpp/language/object#Alignment

[dhayden]

The default alignment is implementation dependent and is normally selected to be something that the target hardware can operate on quickly.