return minVersion(z.X, -sign)
	case *TagExpr:
		if sign < 0 {
			// !foo implies nothing
			return -1
		}
		if z.Tag == "go1" {
			return 0
		}
		_, v, _ := strings.Cut(z.Tag, "go1.")
		n, err := strconv.Atoi(v)
		if err != nil {
			// not a go1.N tag
			return -1
		}
		return n
	}
}

// andVersion returns the minimum Go version
// implied by the AND of two minimum Go versions,

	// Get expected limit.
	limitRe := regexp.MustCompile(`nosplit stack over (\d+) byte limit`)
	m := limitRe.FindStringSubmatch(out)
	if m == nil {
		t.Fatalf("no overflow errors in output")
	}
	limit, _ := strconv.Atoi(m[1])

	wantMap := map[string]string{
		"main.startSelf": fmt.Sprintf(
			`main.startSelf<0>
    grows 1008 bytes
    %d bytes over limit
`, 1008-limit),
		"main.startChain": fmt.Sprintf(
			`main.startChain<0>

#include <sys/select.h>

#include "libgo2.h"

int *nilp;

int main(int argc, char** argv) {
	int verbose;
	int test;

	if (argc < 2) {
		printf("Missing argument\n");
		return 1;
	}

	test = atoi(argv[1]);

	verbose = (argc > 2);

	Noop();

	switch (test) {
		case 1: {
			if (verbose) {
				printf("attempting segfault\n");
			}

			*nilp = 0;
			break;
		}

		case 2: {

// in COFF string table st instead.
func (sh *SectionHeader32) fullName(st StringTable) (string, error) {
	if sh.Name[0] != '/' {
		return cstring(sh.Name[:]), nil
	}
	i, err := strconv.Atoi(cstring(sh.Name[1:]))
	if err != nil {
		return "", err
	}
	return st.String(uint32(i))
}

// TODO(brainman): copy all IMAGE_REL_* consts from ldpe.go here

// Reloc represents a PE COFF relocation.

		}
	}
	if len(routes) == 0 {
		return nil, fmt.Errorf("no routes found")
	}
	sort.Slice(routes, func(i, j int) bool {
		iName, err := strconv.Atoi(routes[i].Name)
		if err != nil {
			return false
		}
		jName, err := strconv.Atoi(routes[j].Name)
		if err != nil {
			return false
		}
		return iName < jName
	})
	return routes, nil
}

func isPassthrough(action any) bool {

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		}
		readStr = scanner.Text()

		split := strings.Split(readStr, " ")

		if len(split) != 2 {
			return nil, fmt.Errorf("preprocessed profile entry got %v want 2 fields", split)
		}

		co, err := strconv.Atoi(split[0])
		if err != nil {
			return nil, fmt.Errorf("preprocessed profile error processing call line: %w", err)
		}

		edge := NamedCallEdge{
			CallerName:     callerName,
			CalleeName:     calleeName,

		// of Setter, so we can convert it to PT.
		p := PT(&result[i])
		// PT has a Set method.
		p.Set(v)
	}
	return result
}

type Settable int

func (p *Settable) Set(s string) {
	i, _ := strconv.Atoi(s) // real code should not ignore the error
	*p = Settable(i)
}

var _ = FromStrings[Settable]([]string{"1", "2"})

// Suitable error message when the type parameter is provided (rather than inferred).

	}
	t.Parallel()

	u, err := user.Current()
	if err != nil {
		t.Fatalf("error getting current user: %v", err)
	}

	uid, err := strconv.Atoi(u.Uid)
	if err != nil {
		t.Fatalf("error converting Uid=%s to integer: %v", u.Uid, err)
	}

	gid, err := strconv.Atoi(u.Gid)
	if err != nil {
		t.Fatalf("error converting Gid=%s to integer: %v", u.Gid, err)
	}

	case Value:
		val, err := value.FromJSON([]byte(split[1]))
		if err != nil {
			return fieldpath.PathElement{}, err
		}
		return fieldpath.PathElement{
			Value: &val,
		}, nil
	case Index:
		i, err := strconv.Atoi(split[1])
		if err != nil {
			return fieldpath.PathElement{}, err
		}
		return fieldpath.PathElement{
			Index: &i,
		}, nil
	case Key:
		kv := map[string]json.RawMessage{}