pkg syscall (netbsd-arm64-cgo), method (*Iovec) SetLen(int)
pkg syscall (netbsd-arm64-cgo), method (*Msghdr) SetControllen(int)
pkg syscall (netbsd-arm64-cgo), type BpfHdr struct
pkg syscall (netbsd-arm64-cgo), type BpfHdr struct, Caplen uint32
pkg syscall (netbsd-arm64-cgo), type BpfHdr struct, Datalen uint32
pkg syscall (netbsd-arm64-cgo), type BpfHdr struct, Hdrlen uint16
pkg syscall (netbsd-arm64-cgo), type BpfHdr struct, Pad_cgo_0 [6]uint8

pkg syscall (windows-386), const KEY_WRITE ideal-int
pkg syscall (windows-386), const LANG_ENGLISH ideal-int
pkg syscall (windows-386), const MAXLEN_IFDESCR ideal-int
pkg syscall (windows-386), const MAXLEN_PHYSADDR ideal-int
pkg syscall (windows-386), const MAX_ADAPTER_ADDRESS_LENGTH ideal-int
pkg syscall (windows-386), const MAX_ADAPTER_DESCRIPTION_LENGTH ideal-int

pkg syscall (darwin-arm64), method (*Iovec) SetLen(int)
pkg syscall (darwin-arm64), method (*Msghdr) SetControllen(int)
pkg syscall (darwin-arm64), type BpfHdr struct
pkg syscall (darwin-arm64), type BpfHdr struct, Caplen uint32
pkg syscall (darwin-arm64), type BpfHdr struct, Datalen uint32
pkg syscall (darwin-arm64), type BpfHdr struct, Hdrlen uint16
pkg syscall (darwin-arm64), type BpfHdr struct, Pad_cgo_0 [2]uint8

pkg syscall (freebsd-arm64), method (*Iovec) SetLen(int)
pkg syscall (freebsd-arm64), method (*Msghdr) SetControllen(int)
pkg syscall (freebsd-arm64), type BpfHdr struct
pkg syscall (freebsd-arm64), type BpfHdr struct, Caplen uint32
pkg syscall (freebsd-arm64), type BpfHdr struct, Datalen uint32
pkg syscall (freebsd-arm64), type BpfHdr struct, Hdrlen uint16
pkg syscall (freebsd-arm64), type BpfHdr struct, Pad_cgo_0 [6]uint8

connecting to servers with buggy HTTP/2 implementations.
These kinds of changes are unavoidable and
[permitted by the Go 1 compatibility rules](/doc/go1compat).
Even so, Go provides a mechanism called GODEBUG to
reduce the impact such changes have on Go developers
using newer toolchains to compile old code.

A GODEBUG setting is a `key=value` pair
that controls the execution of certain parts of a Go program.

pkg syscall (freebsd-riscv64), method (*Msghdr) SetControllen(int) #53466
pkg syscall (freebsd-riscv64), type BpfHdr struct #53466
pkg syscall (freebsd-riscv64), type BpfHdr struct, Caplen uint32 #53466
pkg syscall (freebsd-riscv64), type BpfHdr struct, Datalen uint32 #53466
pkg syscall (freebsd-riscv64), type BpfHdr struct, Hdrlen uint16 #53466

[time.Timer] and [time.Ticker].

First, `Timer`s and `Ticker`s that are no longer referred to by the program
become eligible for garbage collection immediately, even if their
`Stop` methods have not been called.
Earlier versions of Go did not collect unstopped `Timer`s until after
they had fired and never collected unstopped `Ticker`s.

Second, the timer channel associated with a `Timer` or `Ticker` is

pkg syscall (windows-386), const KEY_WOW64_64KEY = 256
pkg syscall (windows-386), const KEY_WRITE = 131078
pkg syscall (windows-386), const LANG_ENGLISH = 9
pkg syscall (windows-386), const MAXLEN_IFDESCR = 256
pkg syscall (windows-386), const MAXLEN_PHYSADDR = 8
pkg syscall (windows-386), const MAX_ADAPTER_ADDRESS_LENGTH = 8
pkg syscall (windows-386), const MAX_ADAPTER_DESCRIPTION_LENGTH = 128

pkg syscall (freebsd-386), func Fchflags(string, int) error
pkg syscall (freebsd-386), func Mknod(string, uint32, int) error
pkg syscall (freebsd-386), type Dirent struct, Fileno uint32
pkg syscall (freebsd-386), type Dirent struct, Namlen uint8
pkg syscall (freebsd-386), type Stat_t struct, Blksize uint32
pkg syscall (freebsd-386), type Stat_t struct, Dev uint32
pkg syscall (freebsd-386), type Stat_t struct, Gen uint32

pkg image, method (*RGBA64) RGBA64At(int, int) color.RGBA64
pkg image, method (*YCbCr) YCbCrAt(int, int) color.YCbCr

# CL 129190043 png: make the encoder configurable, Jeff R. Allen <******@****.***>
pkg image/png, const BestCompression = -3
pkg image/png, const BestCompression CompressionLevel
pkg image/png, const BestSpeed = -2
pkg image/png, const BestSpeed CompressionLevel