diff options
Diffstat (limited to 'src/sync')
| -rw-r--r-- | src/sync/atomic/doc.go | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/src/sync/atomic/doc.go b/src/sync/atomic/doc.go index 4d426826da..7977d13168 100644 --- a/src/sync/atomic/doc.go +++ b/src/sync/atomic/doc.go @@ -57,8 +57,9 @@ import ( // On ARM, 386, and 32-bit MIPS, it is the caller's responsibility to arrange // for 64-bit alignment of 64-bit words accessed atomically via the primitive // atomic functions (types Int64 and Uint64 are automatically aligned). -// The first word in a variable or in an allocated struct, array, or slice can -// be relied upon to be 64-bit aligned. +// The first word in an allocated struct, array, or slice; in a global +// variable; or in a local variable (because the subject of all atomic operations +// will escape to the heap) can be relied upon to be 64-bit aligned. // SwapInt32 atomically stores new into *addr and returns the previous *addr value. func SwapInt32(addr *int32, new int32) (old int32) |