In an external link, cmd/link will create a temporary directory, write any
host object files found in package archives to that directory (renamed
to avoid conflicts), write the go.o file to that directory, and invoke
the host linker. The default value for the host linker is $CC, split
into fields, or else "gcc". The specific host linker command line can
be overridden using command line flags: cmd/link -extld=clang

pkg syscall (darwin-386), const INPCK ideal-int
pkg syscall (darwin-386), const IN_CLASSA_HOST = 16777215
pkg syscall (darwin-386), const IN_CLASSA_MAX = 128
pkg syscall (darwin-386), const IN_CLASSA_NET = 4278190080
pkg syscall (darwin-386), const IN_CLASSA_NSHIFT = 24
pkg syscall (darwin-386), const IN_CLASSB_HOST = 65535
pkg syscall (darwin-386), const IN_CLASSB_MAX = 65536

// the subslices between those separators.
// If sep is empty, SplitN splits after each UTF-8 sequence.
// The count determines the number of subslices to return:
//
//	n > 0: at most n subslices; the last subslice will be the unsplit remainder.
//	n == 0: the result is nil (zero subslices)
//	n < 0: all subslices
//
// To split around the first instance of a separator, see Cut.

	}
	fmt.Fprintf(os.Stderr, "%s:%d: %s", in.File(), in.Line(), fmt.Sprintln(args...))
	os.Exit(1)
}

// expectText is like Error but adds "got XXX" where XXX is a quoted representation of the most recent token.
func (in *Input) expectText(args ...interface{}) {
	in.Error(append(args, "; got", strconv.Quote(in.Stack.Text()))...)
}

// enabled reports whether the input is enabled by an ifdef, or is at the top level.

<p>
A "for" statement with a ForClause is also controlled by its condition, but
additionally it may specify an <i>init</i>
and a <i>post</i> statement, such as an assignment,
an increment or decrement statement. The init statement may be a
<a href="#Short_variable_declarations">short variable declaration</a>, but the post statement must not.
</p>

<pre class="ebnf">
ForClause = [ InitStmt ] ";" [ Condition ] ";" [ PostStmt ] .

	toPatch       []Patch
	addr          []obj.Addr
	arch          *arch.Arch
	ctxt          *obj.Link
	firstProg     *obj.Prog
	lastProg      *obj.Prog
	dataAddr      map[string]int64 // Most recent address for DATA for this symbol.
	isJump        bool             // Instruction being assembled is a jump.
	allowABI      bool             // Whether ABI selectors are allowed.

pkg syscall (freebsd-riscv64), const INPCK = 16 #53466
pkg syscall (freebsd-riscv64), const INPCK ideal-int #53466
pkg syscall (freebsd-riscv64), const IN_CLASSA_HOST = 16777215 #53466
pkg syscall (freebsd-riscv64), const IN_CLASSA_HOST ideal-int #53466
pkg syscall (freebsd-riscv64), const IN_CLASSA_MAX = 128 #53466
pkg syscall (freebsd-riscv64), const IN_CLASSA_MAX ideal-int #53466

pkg syscall (netbsd-arm64), const IN_CLASSC_HOST = 255
pkg syscall (netbsd-arm64), const IN_CLASSC_HOST ideal-int
pkg syscall (netbsd-arm64), const IN_CLASSC_NET = 4294967040
pkg syscall (netbsd-arm64), const IN_CLASSC_NET ideal-int
pkg syscall (netbsd-arm64), const IN_CLASSC_NSHIFT = 8
pkg syscall (netbsd-arm64), const IN_CLASSC_NSHIFT ideal-int
pkg syscall (netbsd-arm64), const IN_CLASSD_HOST = 268435455

	vectors := []struct {
		in      string
		wantRes string
		wantKey string
		wantVal string
		ok      bool
	}{
		{"6 k=v\n\n", "\n", "k", "v", true},
		{"19 path=/etc/hosts\n", "", "path", "/etc/hosts", true},
		{"210 path=" + longName + "\nabc", "abc", "path", longName, true},
		{"110 path=" + medName + "\n", "", "path", medName, true},
		{"9 foo=ba\n", "", "foo", "ba", true},

of Go values and free that space manually all at once, safely. The purpose
of this functionality is to improve efficiency: manually freeing memory
before a garbage collection delays that cycle. Less frequent cycles means
the CPU cost of the garbage collector is incurred less frequently.

This functionality in this package is mostly captured in the Arena type.
Arenas allocate large chunks of memory for Go values, so they're likely to