</pre>

<p>
Within a parenthesized <code>const</code> declaration list the
expression list may be omitted from any but the first ConstSpec.
Such an empty list is equivalent to the textual substitution of the
first preceding non-empty expression list and its type if any.
Omitting the list of expressions is therefore equivalent to
repeating the previous list.  The number of identifiers must be equal

pkg syscall (darwin-arm64), const SYS_LINK = 9
pkg syscall (darwin-arm64), const SYS_LINK ideal-int
pkg syscall (darwin-arm64), const SYS_LIO_LISTIO = 320
pkg syscall (darwin-arm64), const SYS_LIO_LISTIO ideal-int
pkg syscall (darwin-arm64), const SYS_LISTEN = 106
pkg syscall (darwin-arm64), const SYS_LISTEN ideal-int
pkg syscall (darwin-arm64), const SYS_LISTXATTR = 240
pkg syscall (darwin-arm64), const SYS_LISTXATTR ideal-int

pkg syscall (freebsd-arm64), const SYS_LINKAT ideal-int
pkg syscall (freebsd-arm64), const SYS_LIO_LISTIO = 257
pkg syscall (freebsd-arm64), const SYS_LIO_LISTIO ideal-int
pkg syscall (freebsd-arm64), const SYS_LISTEN = 106
pkg syscall (freebsd-arm64), const SYS_LISTEN ideal-int
pkg syscall (freebsd-arm64), const SYS_LPATHCONF = 513
pkg syscall (freebsd-arm64), const SYS_LPATHCONF ideal-int

pkg syscall (freebsd-riscv64), const SYS_LINKAT ideal-int #53466
pkg syscall (freebsd-riscv64), const SYS_LIO_LISTIO = 257 #53466
pkg syscall (freebsd-riscv64), const SYS_LIO_LISTIO ideal-int #53466
pkg syscall (freebsd-riscv64), const SYS_LISTEN = 106 #53466
pkg syscall (freebsd-riscv64), const SYS_LISTEN ideal-int #53466
pkg syscall (freebsd-riscv64), const SYS_LPATHCONF = 513 #53466

has configured without HTTP/2 support.

## Default GODEBUG Values {#default}

When a GODEBUG setting is not listed in the environment variable,
its value is derived from three sources:
the defaults for the Go toolchain used to build the program,
amended to match the Go version listed in `go.mod`,
and then overridden by explicit `//go:debug` lines in the program.

		}
	case *ast.StructType:
		changed := false
		fields := *t.Fields
		fields.List = nil
		for _, f := range t.Fields.List {
			ft := p.rewriteUnsafe(f.Type)
			if ft == f.Type {
				fields.List = append(fields.List, f)
			} else {
				fn := *f
				fn.Type = ft
				fields.List = append(fields.List, &fn)
				changed = true
			}
		}
		if changed {
			r := *t

pkg syscall (darwin-386), const SYS_KQUEUE = 362
pkg syscall (darwin-386), const SYS_LCHOWN = 364
pkg syscall (darwin-386), const SYS_LINK = 9
pkg syscall (darwin-386), const SYS_LIO_LISTIO = 320
pkg syscall (darwin-386), const SYS_LISTEN = 106
pkg syscall (darwin-386), const SYS_LISTXATTR = 240
pkg syscall (darwin-386), const SYS_LSEEK = 199
pkg syscall (darwin-386), const SYS_LSTAT = 190

		instructions[s] = obj.As(i)
	}
	for i, s := range ppc64.Anames {
		if obj.As(i) >= obj.A_ARCHSPECIFIC {
			instructions[s] = obj.As(i) + obj.ABasePPC64
		}
	}
	// The opcodes generated by x/arch's ppc64map are listed in
	// a separate slice, add them too.
	for i, s := range ppc64.GenAnames {
		instructions[s] = obj.As(i) + ppc64.AFIRSTGEN
	}
	// Annoying aliases.
	instructions["BR"] = ppc64.ABR

<p>
It is impractical to list all the instructions and other details for each machine.
To see what instructions are defined for a given machine, say ARM,
look in the source for the <code>obj</code> support library for
that architecture, located in the directory <code>src/cmd/internal/obj/arm</code>.
In that directory is a file <code>a.out.go</code>; it contains
a long list of constants starting with <code>A</code>, like this:

</pre>

<p>
Within a parenthesized <code>const</code> declaration list the
expression list may be omitted from any but the first ConstSpec.
Such an empty list is equivalent to the textual substitution of the
first preceding non-empty expression list and its type if any.
Omitting the list of expressions is therefore equivalent to
repeating the previous list.  The number of identifiers must be equal