duplicate symbols and the linker will fail. To avoid this, definitions
must be placed in preambles in other files, or in C source files.

# Passing pointers

Go is a garbage collected language, and the garbage collector needs to
know the location of every pointer to Go memory. Because of this,
there are restrictions on passing pointers between Go and C.

In this section the term Go pointer means a pointer to memory

	case *ast.SwitchStmt:
		f.walk(n.Init, ctxStmt, visit)
		f.walk(&n.Tag, ctxExpr, visit)
		f.walk(n.Body, ctxSwitch, visit)
	case *ast.TypeSwitchStmt:
		f.walk(n.Init, ctxStmt, visit)
		f.walk(n.Assign, ctxStmt, visit)
		f.walk(n.Body, ctxTypeSwitch, visit)
	case *ast.CommClause:
		f.walk(n.Comm, ctxStmt, visit)
		f.walk(n.Body, ctxStmt, visit)
	case *ast.SelectStmt:
		f.walk(n.Body, ctxStmt, visit)

</p>

<pre>
var p Point
p.Scale(3.5)
</pre>

<p>
There is no distinct method type and there are no method literals.
</p>

<h3 id="Passing_arguments_to_..._parameters">Passing arguments to <code>...</code> parameters</h3>

<p>
If <code>f</code> is <a href="#Function_types">variadic</a> with a final
parameter <code>p</code> of type <code>...T</code>, then within <code>f</code>

pkg syscall (netbsd-arm64-cgo), const SYS_PSELECT = 436
pkg syscall (netbsd-arm64-cgo), const SYS_PSELECT ideal-int
pkg syscall (netbsd-arm64-cgo), const SYS_PSET_ASSIGN = 414
pkg syscall (netbsd-arm64-cgo), const SYS_PSET_ASSIGN ideal-int
pkg syscall (netbsd-arm64-cgo), const SYS__PSET_BIND = 415
pkg syscall (netbsd-arm64-cgo), const SYS__PSET_BIND ideal-int
pkg syscall (netbsd-arm64-cgo), const SYS_PSET_CREATE = 412

The vendor directory may be updated with 'go mod vendor'.
A typical sequence might be:

    cd src  # or src/cmd
    go get golang.org/x/net@master
    go mod tidy
    go mod vendor

Use caution when passing '-u' to 'go get'. The '-u' flag updates
modules providing all transitively imported packages, not only
the module providing the target package.

Note that 'go mod vendor' only copies packages that are transitively

		if err != nil {
			return nil, err
		}
	}
	if sysStat != nil {
		return h, sysStat(fi, h, doNameLookups)
	}
	return h, nil
}

// FileInfoNames extends [fs.FileInfo].
// Passing an instance of this to [FileInfoHeader] permits the caller
// to avoid a system-dependent name lookup by specifying the Uname and Gname directly.
type FileInfoNames interface {
	fs.FileInfo
	// Uname should give a user name.

			if strings.HasPrefix(t, k+"_") {
				return true
			}
		}
	}
	return false
}

// rewriteCalls rewrites all calls that pass pointers to check that
// they follow the rules for passing pointers between Go and C.
// This reports whether the package needs to import unsafe as _cgo_unsafe.
func (p *Package) rewriteCalls(f *File) bool {
	needsUnsafe := false

pkg go/scanner, type Scanner struct, ErrorCount int
pkg go/token, const ADD Token
pkg go/token, const ADD_ASSIGN Token
pkg go/token, const AND Token
pkg go/token, const AND_ASSIGN Token
pkg go/token, const AND_NOT Token
pkg go/token, const AND_NOT_ASSIGN Token
pkg go/token, const ARROW Token
pkg go/token, const ASSIGN Token
pkg go/token, const BREAK Token
pkg go/token, const CASE Token
pkg go/token, const CHAN Token

pkg encoding/base32, method (Encoding) WithPadding(int32) *Encoding
pkg encoding/csv, type Reader struct, ReuseRecord bool
pkg encoding/json, func Valid([]uint8) bool
pkg go/ast, type TypeSpec struct, Assign token.Pos
pkg go/types, func SizesFor(string, string) Sizes
pkg go/types, method (*TypeName) IsAlias() bool
pkg hash/fnv, func New128() hash.Hash
pkg hash/fnv, func New128a() hash.Hash

with a new value specified by an <a href="#Expressions">expression</a>.
An assignment statement may assign a single value to a single variable, or multiple values to a
matching number of variables.
</p>

<pre class="ebnf">
Assignment = ExpressionList assign_op ExpressionList .

assign_op = [ add_op | mul_op ] "=" .
</pre>

<p>