//
// Second, it would be nice to allow Unicode marks as well as letters,
// but marks include combining marks, and then we must deal not
// only with case folding but also normalization: both U+00E9 ('é')
// and U+0065 U+0301 ('e' followed by combining acute accent)
// look the same on the page and are treated by some file systems
// as the same path. If we do allow Unicode marks in paths, there

	"LD_LIBRARY_PATH",    // must be preserved on Unix systems to find shared libraries
	"LIBRARY_PATH",       // allow override of non-standard static library paths
	"C_INCLUDE_PATH",     // allow override non-standard include paths
	"CC",                 // don't lose user settings when invoking cgo
	"GO_TESTING_GOTOOLS", // for gccgo testing

			// a direct call, we could also inline (in which case
			// we'd want to decrease the score even more).
			//
			// One thing we could do (not yet implemented) is iterate
			// through all of the methods of "*Conc" that allow it to
			// satisfy I, and if all are inlinable, then exploit that.
			if pflag&ParamMayFeedInterfaceMethodCall != 0 {
				score, tmask = adjustScore(passConcreteToNestedItfCallAdj, score, tmask)
			}

func Getenv(key string) string {
	if !CanGetenv(key) {
		switch key {
		case "CGO_TEST_ALLOW", "CGO_TEST_DISALLOW", "CGO_test_ALLOW", "CGO_test_DISALLOW":
			// used by internal/work/security_test.go; allow
		default:
			panic("internal error: invalid Getenv " + key)
		}
	}
	val := os.Getenv(key)
	if val != "" {
		return val
	}
	envCache.once.Do(initEnvCache)
	return envCache.m[key]
}

	}

	vk := v.kind
	vs := v.size
	vt := v.typ
	switch vk {
	case asmInterface, asmEmptyInterface, asmString, asmSlice:
		// allow reference to first word (pointer)
		vk = v.inner[0].kind
		vs = v.inner[0].size
		vt = v.inner[0].typ
	case asmComplex:
		// Allow a single instruction to load both parts of a complex.
		if int(kind) == vs {
			kind = asmComplex
		}
	}
	if addr {

			text := s[i+n : estart]
			text = strings.ReplaceAll(text, "\n", " ")

			// If enclosed text starts and ends with a space and is not all spaces,
			// one space is removed from start and end, to allow `` ` `` to quote a single backquote.
			if len(text) >= 2 && text[0] == ' ' && text[len(text)-1] == ' ' && trimSpace(text) != "" {
				text = text[1 : len(text)-1]
			}

			return &Code{text}, start, end, true
		}

To allow additional flags, set CGO_CFLAGS_ALLOW to a regular expression
matching the new flags. To disallow flags that would otherwise be allowed,
set CGO_CFLAGS_DISALLOW to a regular expression matching arguments
that must be disallowed. In both cases the regular expression must match
a full argument: to allow -mfoo=bar, use CGO_CFLAGS_ALLOW='-mfoo.*',

				printFunc(f)
			}
			f.HTMLWriter.WritePhase(phaseName, fmt.Sprintf("%s <span class=\"stats\">%s</span>", phaseName, stats))
		}
		if p.time || p.mem {
			// Surround timing information w/ enough context to allow comparisons.
			time := tEnd.Sub(tStart).Nanoseconds()
			if p.time {
				f.LogStat("TIME(ns)", time)
			}
			if p.mem {
				var mEnd runtime.MemStats
				runtime.ReadMemStats(&mEnd)

// occurs, it will report the error.
func removeFile(f string) {
	err := os.Remove(f)
	if err == nil || os.IsNotExist(err) {
		return
	}
	// Windows does not allow deletion of a binary file while it is executing.
	if runtime.GOOS == "windows" {
		// Remove lingering ~ file from last attempt.
		if _, err2 := os.Stat(f + "~"); err2 == nil {
			os.Remove(f + "~")
		}

		}
	})
}

// allowedVersionArg returns whether a token may be used as a version in go.mod.
// We don't call modfile.CheckPathVersion, because that insists on versions
// being in semver form, but here we want to allow versions like "master" or
// "1234abcdef", which the go command will resolve the next time it runs (or
// during -fix).  Even so, we need to make sure the version is a valid token.
func allowedVersionArg(arg string) bool {