Before updating vendor directories, ensure that module mode is enabled.
Make sure that GO111MODULE is not set in the environment, or that it is
set to 'on' or 'auto', and if you use a go.work file, set GOWORK=off.

Requirements may be added, updated, and removed with 'go get'.
The vendor directory may be updated with 'go mod vendor'.
A typical sequence might be:

    cd src  # or src/cmd
    go get golang.org/x/net@master
    go mod tidy
    go mod vendor

For the remaining programs,
we define a new GODEBUG setting that
allows individual programs to opt back in to the old behavior.
A GODEBUG setting may not be added if doing so is infeasible,
but that should be extremely rare.

GODEBUG settings added for compatibility will be maintained
for a minimum of two years (four Go releases).
Some, such as `http2client` and `http2server`,
will be maintained much longer, even indefinitely.

become a go1.XX.txt for XX >= 19.

The next/ directory contains the only files intended to be mutated.
Each file in that directory contains a list of features that may be added
to the next release of Go. The files in this directory only affect the
warning output from the go api tool. Each file should be named
nnnnn.txt, after the issue number for the accepted proposal.

# Release Notes

The `initial` and `next` subdirectories of this directory are for release notes.

## For developers

Release notes should be added to `next` by editing existing files or creating
new files. **Do not add RELNOTE=yes comments in CLs.** Instead, add a file to
the CL (or ask the author to do so).

At the end of the development cycle, the files will be merged by being
concatenated in sorted order by pathname. Files in the directory matching the

The new methods synonymous with the method of the same name
in [Value] are added to [Type]:
1. [Type.OverflowComplex]
2. [Type.OverflowFloat]
3. [Type.OverflowInt]

pkg debug/elf, type Rel64 struct, Off uint64
pkg debug/elf, type Rela32 struct
pkg debug/elf, type Rela32 struct, Addend int32
pkg debug/elf, type Rela32 struct, Info uint32
pkg debug/elf, type Rela32 struct, Off uint32
pkg debug/elf, type Rela64 struct
pkg debug/elf, type Rela64 struct, Addend int64
pkg debug/elf, type Rela64 struct, Info uint64
pkg debug/elf, type Rela64 struct, Off uint64

pkg syscall (windows-386), const EWOULDBLOCK = 536871039
pkg syscall (windows-386), const EXDEV = 536871040
pkg syscall (windows-386), const EXFULL = 536871041
pkg syscall (windows-386), const FILE_ACTION_ADDED = 1
pkg syscall (windows-386), const FILE_ACTION_MODIFIED = 3
pkg syscall (windows-386), const FILE_ACTION_REMOVED = 2
pkg syscall (windows-386), const FILE_ACTION_RENAMED_NEW_NAME = 5

# CL 157090043 crypto/tls: support TLS_FALLBACK_SCSV as a server., Adam Langley <******@****.***>
pkg crypto/tls, const TLS_FALLBACK_SCSV = 22016
pkg crypto/tls, const TLS_FALLBACK_SCSV uint16

# CL 107400043 crypto/tls: Added dynamic alternative to NameToCertificate map for SNI, Percy Wegmann <******@****.***>
pkg crypto/tls, type ClientHelloInfo struct
pkg crypto/tls, type ClientHelloInfo struct, CipherSuites []uint16

pkg debug/elf, const R_X86_64_TLSDESC R_X86_64
pkg debug/elf, const R_X86_64_TLSDESC_CALL = 35
pkg debug/elf, const R_X86_64_TLSDESC_CALL R_X86_64
pkg debug/macho, const ARM64_RELOC_ADDEND = 10
pkg debug/macho, const ARM64_RELOC_ADDEND RelocTypeARM64
pkg debug/macho, const ARM64_RELOC_BRANCH26 = 2
pkg debug/macho, const ARM64_RELOC_BRANCH26 RelocTypeARM64
pkg debug/macho, const ARM64_RELOC_GOT_LOAD_PAGE21 = 5