//     json.Unmarshaler.  This itab happens to also live in bucket 0x111.
//     The lookup code goes into an infinite loop searching for this itab.
//
// The code is carefully crafted so that the two itabs are both from the
// same bucket, and so that the second itab doesn't exist in
// the itab hashmap yet (so the entire linked list must be searched).
package main

import (
	"encoding/json"
	"plugin"

The patterns used by [ServeMux] now allow one or more spaces or tabs after the method name.

		//      Reflect is responsible for keeping a reference to
		//      the underlying type so it won't be GCd.
		// If we ever have a moving GC, we need to change this for 2b (as
		// well as scan itabs to update their itab._type fields).
		bv.Set(int32(off/int64(types.PtrSize) + 1)) // pointer in second slot

	case types.TSLICE:
		// struct { byte *array; uintgo len; uintgo cap; }
		if off&int64(types.PtrSize-1) != 0 {

		v = v.Args[0]
	}
	switch v.Op {
	case OpSP, OpLocalAddr, OpSelectNAddr:
		// Stack addresses are always safe.
		return true
	case OpITab, OpStringPtr, OpGetClosurePtr:
		// Itabs, string data, and closure fields are
		// read-only once initialized.
		return true
	case OpAddr:
		vt := v.Aux.(*obj.LSym).Type

	//   b. both are empty interface types, or
	//   c. at least one is a gcshape type.
	// For assignable but different non-empty interface types,
	// we want to recompute the itab. Recomputing the itab ensures
	// that itabs are unique (thus an interface with a compile-time
	// type I has an itab with interface type I).
	if types.Identical(src.Underlying(), dst.Underlying()) {
		if src.IsEmptyInterface() {

		}
	}
	return false
}

func extract(val string) (op, typ, auxint, aux string, args []string) {
	val = val[1 : len(val)-1] // remove ()

	// Split val up into regions.
	// Split by spaces/tabs, except those contained in (), {}, [], or <>.
	s := split(val)

	// Extract restrictions and args.
	op = s[0]
	for _, a := range s[1:] {
		switch a[0] {
		case '<':

// is known and is the constant address of another symbol.
func isFixedSym(sym Sym, off int64) bool {
	lsym := sym.(*obj.LSym)
	switch {
	case lsym.Type == objabi.SRODATA:
		// itabs, dictionaries
	default:
		return false
	}
	for _, r := range lsym.R {
		if (r.Type == objabi.R_ADDR || r.Type == objabi.R_WEAKADDR) && int64(r.Off) == off && r.Add == 0 {
			return true
		}
	}

 * the share and the ACL on the folder being shared.
 * Go to <i>Computer Management</i>
 * &gt; <i>System Tools</i> &gt; <i>Shared Folders</i> &gt <i>Shares</i> and
 * look at the <i>Properties</i> for a share. You will see two tabs - one
 * for "Share Permissions" and another for "Security". These correspond to
 * the ACLs returned by <tt>getShareSecurity</tt> and <tt>getSecurity</tt>
 * respectively.

(RotateLeft(64|32|16|8) (RotateLeft(64|32|16|8) x c) d) && c.Type.Size() == 1 && d.Type.Size() == 1 => (RotateLeft(64|32|16|8) x (Add8  <c.Type> c d))

// Loading constant values from dictionaries and itabs.
(Load <t> (OffPtr [off]                       (Addr {s} sb)       ) _) && t.IsUintptr() && isFixedSym(s, off) => (Addr {fixedSym(b.Func, s, off)} sb)

<p>
Tokens form the vocabulary of the Go language.
There are four classes: <i>identifiers</i>, <i>keywords</i>, <i>operators
and punctuation</i>, and <i>literals</i>.  <i>White space</i>, formed from
spaces (U+0020), horizontal tabs (U+0009),
carriage returns (U+000D), and newlines (U+000A),
is ignored except as it separates tokens
that would otherwise combine into a single token. Also, a newline or end of file