stat(path, callback) { callback(enosys()); },
			symlink(path, link, callback) { callback(enosys()); },
			truncate(path, length, callback) { callback(enosys()); },
			unlink(path, callback) { callback(enosys()); },
			utimes(path, atime, mtime, callback) { callback(enosys()); },
		};
	}

	if (!globalThis.process) {
		globalThis.process = {
			getuid() { return -1; },
			getgid() { return -1; },
			geteuid() { return -1; },

pkg syscall (openbsd-386), const SYS_STAT = 38
pkg syscall (openbsd-386), const SYS_STATFS = 63
pkg syscall (openbsd-386), const SYS_UTIMENSAT = 84
pkg syscall (openbsd-386), const SYS_UTIMES = 76
pkg syscall (openbsd-386), const SYS_UTRACE = 209
pkg syscall (openbsd-386), const SYS_UTRACE ideal-int
pkg syscall (openbsd-386), const SYS_WAIT4 = 11
pkg syscall (openbsd-386), const SYS___THRSLEEP = 94

pkg syscall (netbsd-arm64-cgo), const SYS_UTIMENSAT = 467
pkg syscall (netbsd-arm64-cgo), const SYS_UTIMENSAT ideal-int
pkg syscall (netbsd-arm64-cgo), const SYS_UTIMES = 420
pkg syscall (netbsd-arm64-cgo), const SYS_UTIMES ideal-int
pkg syscall (netbsd-arm64-cgo), const SYS_UTRACE = 306
pkg syscall (netbsd-arm64-cgo), const SYS_UTRACE ideal-int
pkg syscall (netbsd-arm64-cgo), const SYS_UUIDGEN = 355

</pre>

<p>
Productions are expressions constructed from terms and the following
operators, in increasing precedence:
</p>
<pre class="grammar">
|   alternation
()  grouping
[]  option (0 or 1 times)
{}  repetition (0 to n times)
</pre>

<p>
Lower-case production names are used to identify lexical tokens.
Non-terminals are in CamelCase. Lexical tokens are enclosed in
double quotes <code>""</code> or back quotes <code>``</code>.

/src/go/doc/headscan
/src/internal/buildcfg/zbootstrap.go
/src/runtime/internal/sys/zversion.go
/src/unicode/maketables
/src/time/tzdata/zzipdata.go
/test.out
/test/garbage/*.out
/test/pass.out
/test/run.out
/test/times.out

# This file includes artifacts of Go build that should not be checked in.
# For files created by specific development environment (e.g. editor),
# use alternative ways to exclude files from git.

because it documents the full list of known GODEBUG settings,
which are tied to a specific release.
-->

## Introduction {#intro}

Go's emphasis on backwards compatibility is one of its key strengths.
There are, however, times when we cannot maintain complete compatibility.
If code depends on buggy (including insecure) behavior,
then fixing the bug will break that code.
New features can also have similar impacts:

pkg syscall (darwin-arm64), const SYS_UNLINK ideal-int
pkg syscall (darwin-arm64), const SYS_UNMOUNT = 159
pkg syscall (darwin-arm64), const SYS_UNMOUNT ideal-int
pkg syscall (darwin-arm64), const SYS_UTIMES = 138
pkg syscall (darwin-arm64), const SYS_UTIMES ideal-int
pkg syscall (darwin-arm64), const SYS_VFORK = 66
pkg syscall (darwin-arm64), const SYS_VFORK ideal-int
pkg syscall (darwin-arm64), const SYS_VM_PRESSURE_MONITOR = 296

pkg crypto/rsa, type PrivateKey struct
pkg crypto/rsa, type PrivateKey struct, D *big.Int
pkg crypto/rsa, type PrivateKey struct, Precomputed PrecomputedValues
pkg crypto/rsa, type PrivateKey struct, Primes []*big.Int
pkg crypto/rsa, type PrivateKey struct, embedded PublicKey
pkg crypto/rsa, type PublicKey struct
pkg crypto/rsa, type PublicKey struct, E int
pkg crypto/rsa, type PublicKey struct, N *big.Int

pkg syscall (freebsd-arm64), const SYS_UTIMENSAT = 547
pkg syscall (freebsd-arm64), const SYS_UTIMENSAT ideal-int
pkg syscall (freebsd-arm64), const SYS_UTIMES = 138
pkg syscall (freebsd-arm64), const SYS_UTIMES ideal-int
pkg syscall (freebsd-arm64), const SYS_UTRACE = 335
pkg syscall (freebsd-arm64), const SYS_UTRACE ideal-int
pkg syscall (freebsd-arm64), const SYS_UUIDGEN = 392

//	ChangeTime        |    n/a | unlimited |     int89
//	Devmajor/Devminor | uint21 |    uint21 |    uint57
//	------------------+--------+-----------+----------
//	string encoding   |  ASCII |     UTF-8 |    binary
//	sub-second times  |     no |       yes |        no
//	sparse files      |     no |       yes |       yes
//
// The table's upper portion shows the [Header] fields, where each format reports