// Methods attached to a *Named type are also instantiated, and associated with
// a new *Func that has the same position as the original method, but nil function
// scope.
//
// If ctxt is non-nil, it may be used to de-duplicate the instance against
// previous instances with the same identity. As a special case, generic
// *Signature origin types are only considered identical if they are pointer
// equivalent, so that instantiating distinct (but possibly identical)

	var echRetryConfigList []byte
	if hs.echContext != nil {
		confTranscript := cloneHash(hs.echContext.innerTranscript, hs.suite.hash)
		confTranscript.Write(hs.serverHello.original[:30])
		confTranscript.Write(make([]byte, 8))
		confTranscript.Write(hs.serverHello.original[38:])
		acceptConfirmation := hs.suite.expandLabel(
			hs.suite.extract(hs.echContext.innerHello.random, nil),
			"ech accept confirmation",
			confTranscript.Sum(nil),

// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

//go:build unix

package syscall

import (
	"sync/atomic"
)

// origRlimitNofile, if non-nil, is the original soft RLIMIT_NOFILE.
var origRlimitNofile atomic.Pointer[Rlimit]

// Some systems set an artificially low soft limit on open file count, for compatibility
// with code that uses select and its hard-coded maximum file descriptor

	re := compileTest(t, test.pat, "")
	if re == nil {
		return
	}
	m1 := re.MatchString(test.text)
	m2 := re.Copy().MatchString(test.text)
	if m1 != m2 {
		t.Errorf("Copied Regexp match failure on %s: original gave %t; copy gave %t; should be %t",
			test, m1, m2, len(test.matches) > 0)
	}
}

func TestCopyMatch(t *testing.T) {
	for _, test := range findTests {
		copyMatchTest(t, &test)
	}
}

		// careful not to call any methods that would cause t to be expanded: doing
		// so would result in deadlock.
		//
		// So we call t.Origin().TypeParams() rather than t.TypeParams().
		orig := t.Origin()
		n := orig.TypeParams().Len()
		if n == 0 {
			return t // type is not parameterized
		}

		if t.TypeArgs().Len() != n {
			return Typ[Invalid] // error reported elsewhere

}

// An EnvVar is an environment variable Name=Value.
type EnvVar struct {
	Name    string
	Value   string
	Changed bool // effective Value differs from default
}

// OrigEnv is the original environment of the program at startup.
var OrigEnv []string

// CmdEnv is the new environment for running go tool commands.
// User binaries (during go test or go run) are run with OrigEnv,
// not CmdEnv.

	}

	// Read into buffer of that size.
	buf := make([]byte, n)
	if err := sysctl(mib, &buf[0], &n, nil, 0); err != nil {
		return nil, err
	}

	// The actual call may return less than the original reported required
	// size so ensure we deal with that.
	return buf[:n], nil
}

func SysctlClockinfo(name string) (*Clockinfo, error) {
	mib, err := sysctlmib(name)
	if err != nil {
		return nil, err

// Note that this package works on "1.21" while go/version works on "go1.21".
package gover

import (
	"cmp"
)

// A Version is a parsed Go version: major[.Minor[.Patch]][kind[pre]]
// The numbers are the original decimal strings to avoid integer overflows
// and since there is very little actual math. (Probably overflow doesn't matter in practice,
// but at the time this code was written, there was an existing test that used

// origin returns the original uninstantiated symbol for obj.
func origin(obj types.Object) types.Object {
	switch obj := obj.(type) {
	case *types.Var:
		return obj.Origin()
	case *types.Func:
		return obj.Origin()
	case *types.TypeName:
		if named, ok := obj.Type().(*types.Named); ok { // (don't unalias)
			return named.Origin().Obj()
		}
	}
	return obj
}

		return r.p.tparamIndex[id]

	case instanceType:
		if r.p.exportVersion < iexportVersionGenerics {
			errorf("unexpected instantiation type")
		}
		// pos does not matter for instances: they are positioned on the original
		// type.
		_ = r.pos()
		len := r.uint64()
		targs := make([]types.Type, len)
		for i := range targs {
			targs[i] = r.typ()
		}
		baseType := r.typ()