if r.UnreadRune() == nil {
		t.Error("expected error after UnreadRune (1)")
	}
	// Test error after Read.
	_, _, err = r.ReadRune() // reset state
	if err != nil {
		t.Error("unexpected error on ReadRune (2):", err)
	}
	_, err = r.Read(buf)
	if err != nil {
		t.Error("unexpected error on Read (2):", err)
	}
	if r.UnreadRune() == nil {
		t.Error("expected error after Read (2)")
	}
	// Test error after ReadByte.

	// Check that LEAL is permitted to use overflowing offset.
	LEAL 2400959708(BP)(R10*1), BP // 428dac15dcbc1b8f
	LEAL 3395469782(AX)(R10*1), AX // 428d8410d6c162ca
	// Make sure MOV CR/DR continues to work after changing its movtabs.
	MOVQ CR0, AX // 0f20c0
	MOVQ CR0, DX // 0f20c2
	MOVQ CR4, DI // 0f20e7
	MOVQ AX, CR0 // 0f22c0
	MOVQ DX, CR0 // 0f22c2
	MOVQ DI, CR4 // 0f22e7
	MOVQ DR0, AX // 0f21c0

			{
				Name:     "bar.txt",
				Content:  []byte("bar\n"),
				Modified: time.Date(2012, 3, 8, 16, 59, 12, 0, timeZone(-8*time.Hour)),
				Mode:     0644,
			},
		},
	},
	{
		// created by Go, after we wrote the "optional" data
		// descriptor signatures (which are required by macOS)
		Name: "go-with-datadesc-sig.zip",
		File: []ZipTestFile{
			{
				Name:     "foo.txt",
				Content:  []byte("foo\n"),

		// don't want to resolve them to their base types.
		if *godefs {
			break
		}
	}
	p.prepareNames(f)
	if p.rewriteCalls(f) {
		// Add `import _cgo_unsafe "unsafe"` after the package statement.
		f.Edit.Insert(f.offset(f.AST.Name.End()), "; import _cgo_unsafe \"unsafe\"")
	}
	p.rewriteRef(f)
}

// loadDefines coerces gcc into spitting out the #defines in use

	for _, tt := range cutTests {
		if before, after, found := Cut([]byte(tt.s), []byte(tt.sep)); string(before) != tt.before || string(after) != tt.after || found != tt.found {
			t.Errorf("Cut(%q, %q) = %q, %q, %v, want %q, %q, %v", tt.s, tt.sep, before, after, found, tt.before, tt.after, tt.found)
		}
	}
}

var cutPrefixTests = []struct {
	s, sep string
	after  string
	found  bool
}{