present to create such a binary.

Most builds both compile source code and invoke the linker to create a
binary. When cgo is involved, the compile step already requires gcc, so
it is not problematic for the link step to require gcc too.

An important exception is builds using a pre-compiled copy of the
standard library. In particular, package net uses cgo on most systems,

// one of the CMP instructions that require special handling.
func IsPPC64CMP(op obj.As) bool {
	switch op {
	case ppc64.ACMP, ppc64.ACMPU, ppc64.ACMPW, ppc64.ACMPWU, ppc64.AFCMPU:
		return true
	}
	return false
}

// IsPPC64NEG reports whether the op (as defined by an ppc64.A* constant) is
// one of the NEG-like instructions that require special handling.
func IsPPC64NEG(op obj.As) bool {
	switch op {

The new [Request.CookiesNamed] method retrieves all cookies that match the given name....

pkg net/http, method (*Request) CookiesNamed(string) []*Cookie #61472...

## Ports {#ports}

### Darwin {#darwin}

<!-- go.dev/issue/64207 -->
As [announced](go1.22#darwin) in the Go 1.22 release notes,
Go 1.23 requires macOS 11 Big Sur or later;
support for previous versions has been discontinued.

### Wasm {#wasm}

<!-- go.dev/issue/63718 -->
The `go_wasip1_wasm_exec` script in `GOROOT/misc/wasm` has dropped support

		{"PCDATA", "", "expect two operands for PCDATA"},
		{"PCDATA", "1", "expect two operands for PCDATA"},
	}

	runtimeTests := []errtest{
		{"TEXT", "foo<ABIInternal>(SB),0", "TEXT \"foo\": ABIInternal requires NOSPLIT"},
	}

	testcats := []struct {
		allowABI bool
		tests    []errtest
	}{
		{
			allowABI: false,
			tests:    nonRuntimeTests,
		},
		{
			allowABI: true,
			tests:    runtimeTests,

		return
	}
	t.Logf("found swig version %d.%d.%d", major, minor, patch)
	if major < 3 || (major == 3 && minor == 0 && patch < 6) {
		t.Skip("test requires swig 3.0.6 or later")
	}

func (f *File) walk(x interface{}, context astContext, visit func(*File, interface{}, astContext)) {
	visit(f, x, context)
	switch n := x.(type) {
	case *ast.Expr:
		f.walk(*n, context, visit)

	// everything else just recurs
	default:
		f.walkUnexpected(x, context, visit)

	case nil:

	// These are ordered and grouped to match ../../go/ast/ast.go
	case *ast.Field:
		if len(n.Names) == 0 && context == ctxField {

pkg net, type Dialer struct, FallbackDelay time.Duration
pkg net, type OpError struct, Source Addr
pkg net/http, type Request struct, Cancel <-chan struct
pkg net/http/fcgi, var ErrConnClosed error
pkg net/http/fcgi, var ErrRequestAborted error
pkg net/http/pprof, func Trace(http.ResponseWriter, *http.Request)
pkg net/mail, method (*AddressParser) Parse(string) (*Address, error)

0X_1FFFP-16  // == 0.1249847412109375
0x15e-2      // == 0x15e - 2 (integer subtraction)

0x.p1        // invalid: mantissa has no digits
1p-2         // invalid: p exponent requires hexadecimal mantissa
0x1.5e-2     // invalid: hexadecimal mantissa requires p exponent
1_.5         // invalid: _ must separate successive digits
1._5         // invalid: _ must separate successive digits
1.5_e1       // invalid: _ must separate successive digits