Files in this directory are data for Go's API checker ("go tool api", in src/cmd/api).

Each file is a list of API features, one per line.

go1.txt (and similarly named files) are frozen once a version has been
shipped. Each file adds new lines but does not remove any.

except.txt lists features that may disappear without breaking true
compatibility.

Starting with go1.19.txt, each API feature line must end in "#nnnnn"

pkg syscall (linux-386), type Cmsghdr struct, X__cmsg_data [0]uint8
pkg syscall (linux-386-cgo), type Cmsghdr struct, X__cmsg_data [0]uint8
pkg syscall (linux-amd64), type Cmsghdr struct, X__cmsg_data [0]uint8
pkg syscall (linux-amd64-cgo), type Cmsghdr struct, X__cmsg_data [0]uint8
pkg syscall (linux-arm), type Cmsghdr struct, X__cmsg_data [0]uint8
pkg syscall (linux-arm-cgo), type Cmsghdr struct, X__cmsg_data [0]uint8

pkg crypto/tls, type QUICConn struct #44886
pkg crypto/tls, type QUICEncryptionLevel int #44886
pkg crypto/tls, type QUICEventKind int #44886
pkg crypto/tls, type QUICEvent struct #44886
pkg crypto/tls, type QUICEvent struct, Data []uint8 #44886
pkg crypto/tls, type QUICEvent struct, Kind QUICEventKind #44886
pkg crypto/tls, type QUICEvent struct, Level QUICEncryptionLevel #44886
pkg crypto/tls, type QUICEvent struct, Suite uint16 #44886