NAME¶

gnu::aligned - set alignment of an object

SYNOPSIS¶

[[gnu::aligned(alignment)]]
[[gnu::aligned]]

DESCRIPTION¶

This attribute can be applied to a type or a variable, and sets its alignment in bytes.

If the alignment is not specified, the maximum alignment is used. This is equivalent to

[[gnu::aligned(alignof(max_align_t))]]

VERSIONS¶

__attribute__((aligned(alignment)))

__declspec(align(alignment))

C11 provides the _Alignas() type specifier, which has similar semantics.

STANDARDS¶

GNU.

HISTORY¶

gcc, g++, clang 11, clang++ 2.8.0.

CAVEATS¶

This attribute can increase the natural alignment of a type, but it can't decrease it.

The linker may limit the maximum alignment that can be applied.