// alias declarations, and then everything else. This appears to avoid most situations
		// where the type of an alias is needed before it is available.
		// There may still be cases where this is not good enough (see also go.dev/issue/25838).
		// In those cases Checker.ident will report an error ("invalid use of type alias").
		var aliasList []*TypeName
		var othersList []Object // everything that's not a type

// that appears later in this list: integer, rune, floating-point, complex.
// Otherwise, if x != y, the result is nil.
func maxType(x, y Type) Type {
	// We only care about untyped types (for now), so == is good enough.
	// TODO(gri) investigate generalizing this function to simplify code elsewhere
	if x == y {
		return x
	}
	if isUntypedNumeric(x) && isUntypedNumeric(y) {
		// untyped types are basic types

	err      error
}{
	{"", 0, []string{""}, io.EOF},
	{"a\x00", 0, []string{"a\x00"}, nil},
	{"abbbaaaba", 'b', []string{"ab", "b", "b", "aaab"}, nil},
	{"hello\x01world", 1, []string{"hello\x01"}, nil},
	{"foo\nbar", 0, []string{"foo\nbar"}, io.EOF},
	{"alpha\nbeta\ngamma\n", '\n', []string{"alpha\n", "beta\n", "gamma\n"}, nil},
	{"alpha\nbeta\ngamma", '\n', []string{"alpha\n", "beta\n", "gamma"}, io.EOF},
}

// that suggests a 'go get' command for root packages that transitively import
// packages from modules with missing sums. load.CheckPackageErrors would be
// a good place to consolidate errors, but we'll need to attach the import
// stack here.
type ImportMissingSumError struct {
	importPath                string
	found                     bool

		// Add only the sums that we actually checked: the user may have edited or
		// truncated the file to remove erroneous hashes, and we shouldn't restore
		// them without good reason.
		goSum.m = make(map[module.Version][]string, len(goSum.m))
		readGoSum(goSum.m, GoSumFile, data)
		for ms, st := range goSum.status {
			if st.used && !sumInWorkspaceModulesLocked(ms.mod) {

			// we'll end up building an overall library or executable that depends at runtime
			// on other libraries that are out-of-date, which is clearly not good either.
			// We call it ModeBuggyInstall to make clear that this is not right.
			a.Deps = append(a.Deps, b.linkSharedAction(ModeBuggyInstall, ModeBuggyInstall, p1.Shlib, nil))
		}
	}
}

	// we skip any version that has already been rejected.
	//
	// NOTE(bcmills): I am not sure that the rejectedRoot map is really necessary,
	// since we normally only downgrade roots or accept indirect upgrades to
	// known-good versions. However, I am having trouble proving that accepting an
	// indirect upgrade never introduces a conflict that leads to further
	// downgrades. I really want to be able to prove that editRequirements

An error on not-declared:1 indicates that foo is undeclared.
An error on not-type:1 indicates that foo is not a type (if declared at all, it is an identifier).
An error on not-int-const:1 indicates that foo is not an integer constant.
An error on not-num-const:1 indicates that foo is not a number constant.
An error on not-str-lit:1 indicates that foo is not a string literal.
An error on not-signed-int-const:1 indicates that foo is not a signed integer constant.

// example with this SCC:
//
//	func foo(x int) {           func bar(x int, f func()) {
//	  if x != 0 {                  f()
//	    bar(x, func(){})           foo(x-1)
//	  }                         }
//	}
//
// We don't want to perform scoring for the 'foo' call in "bar" until
// after foo has been analyzed, but it's conceivable that CanInline
// might visit bar before foo for this SCC.
func ScoreCalls(fn *ir.Func) {

// src/cmd/go/internal/load/pkg.go
func checkPathCollisions(modpkgs map[module.Version][]string) {
	var foldPath = make(map[string]string, len(modpkgs))
	for m := range modpkgs {
		fold := str.ToFold(m.Path)
		if other := foldPath[fold]; other == "" {
			foldPath[fold] = m.Path
		} else if other != m.Path {
			base.Fatalf("go.mod: case-insensitive import collision: %q and %q", m.Path, other)
		}
	}