1 // Copyright 2015 The Go Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style
3 // license that can be found in the LICENSE file.
15 file1C = &LineFile{Name: "/home/austin/go.dev/src/debug/dwarf/testdata/line1.c"}
16 file1H = &LineFile{Name: "/home/austin/go.dev/src/debug/dwarf/testdata/line1.h"}
17 file2C = &LineFile{Name: "/home/austin/go.dev/src/debug/dwarf/testdata/line2.c"}
20 func TestLineELFGCC(t *testing.T) {
22 // # gcc --version | head -n1
23 // gcc (Ubuntu 4.8.2-19ubuntu1) 4.8.2
24 // # gcc -g -o line-gcc.elf line*.c
26 // Line table based on readelf --debug-dump=rawline,decodedline
28 {Address: 0x40059d, File: file1H, Line: 2, IsStmt: true},
29 {Address: 0x4005a5, File: file1H, Line: 2, IsStmt: true},
30 {Address: 0x4005b4, File: file1H, Line: 5, IsStmt: true},
31 {Address: 0x4005bd, File: file1H, Line: 6, IsStmt: true, Discriminator: 2},
32 {Address: 0x4005c7, File: file1H, Line: 5, IsStmt: true, Discriminator: 2},
33 {Address: 0x4005cb, File: file1H, Line: 5, IsStmt: false, Discriminator: 1},
34 {Address: 0x4005d1, File: file1H, Line: 7, IsStmt: true},
35 {Address: 0x4005e7, File: file1C, Line: 6, IsStmt: true},
36 {Address: 0x4005eb, File: file1C, Line: 7, IsStmt: true},
37 {Address: 0x4005f5, File: file1C, Line: 8, IsStmt: true},
38 {Address: 0x4005ff, File: file1C, Line: 9, IsStmt: true},
39 {Address: 0x400601, EndSequence: true},
41 {Address: 0x400601, File: file2C, Line: 4, IsStmt: true},
42 {Address: 0x400605, File: file2C, Line: 5, IsStmt: true},
43 {Address: 0x40060f, File: file2C, Line: 6, IsStmt: true},
44 {Address: 0x400611, EndSequence: true},
46 files := [][]*LineFile{{nil, file1H, file1C}, {nil, file2C}}
48 testLineTable(t, want, files, elfData(t, "testdata/line-gcc.elf"))
51 func TestLineELFGCCZstd(t *testing.T) {
53 // # gcc --version | head -n1
54 // gcc (Debian 12.2.0-10) 12.2.0
55 // # gcc -g -no-pie -Wl,--compress-debug-sections=zstd line*.c
57 zfile1H := &LineFile{Name: "/home/iant/go/src/debug/dwarf/testdata/line1.h"}
58 zfile1C := &LineFile{Name: "/home/iant/go/src/debug/dwarf/testdata/line1.c"}
59 zfile2C := &LineFile{Name: "/home/iant/go/src/debug/dwarf/testdata/line2.c"}
61 // Line table based on readelf --debug-dump=rawline,decodedline
63 {Address: 0x401126, File: zfile1H, Line: 2, Column: 1, IsStmt: true},
64 {Address: 0x40112a, File: zfile1H, Line: 5, Column: 8, IsStmt: true},
65 {Address: 0x401131, File: zfile1H, Line: 5, Column: 2, IsStmt: true},
66 {Address: 0x401133, File: zfile1H, Line: 6, Column: 10, IsStmt: true, Discriminator: 3},
67 {Address: 0x40113d, File: zfile1H, Line: 5, Column: 22, IsStmt: true, Discriminator: 3},
68 {Address: 0x401141, File: zfile1H, Line: 5, Column: 15, IsStmt: true, Discriminator: 1},
69 {Address: 0x401147, File: zfile1H, Line: 7, Column: 1, IsStmt: true},
70 {Address: 0x40114b, File: zfile1C, Line: 6, Column: 1, IsStmt: true},
71 {Address: 0x40114f, File: zfile1C, Line: 7, Column: 2, IsStmt: true},
72 {Address: 0x401159, File: zfile1C, Line: 8, Column: 2, IsStmt: true},
73 {Address: 0x401168, File: zfile1C, Line: 9, Column: 1, IsStmt: true},
74 {Address: 0x40116a, EndSequence: true},
76 {Address: 0x40116a, File: zfile2C, Line: 4, Column: 1, IsStmt: true},
77 {Address: 0x40116e, File: zfile2C, Line: 5, Column: 2, IsStmt: true},
78 {Address: 0x40117d, File: zfile2C, Line: 6, Column: 1, IsStmt: true},
79 {Address: 0x401180, EndSequence: true},
81 files := [][]*LineFile{
82 {zfile1C, zfile1H, zfile1C},
86 testLineTable(t, want, files, elfData(t, "testdata/line-gcc-zstd.elf"))
89 func TestLineGCCWindows(t *testing.T) {
92 // gcc (tdm64-1) 4.9.2
93 // > gcc -g -o line-gcc-win.bin line1.c C:\workdir\go\src\debug\dwarf\testdata\line2.c
95 toWindows := func(lf *LineFile) *LineFile {
97 lf2.Name = strings.Replace(lf2.Name, "/home/austin/go.dev/", "C:\\workdir\\go\\", -1)
98 lf2.Name = strings.Replace(lf2.Name, "/", "\\", -1)
101 file1C := toWindows(file1C)
102 file1H := toWindows(file1H)
103 file2C := toWindows(file2C)
105 // Line table based on objdump --dwarf=rawline,decodedline
107 {Address: 0x401530, File: file1H, Line: 2, IsStmt: true},
108 {Address: 0x401538, File: file1H, Line: 5, IsStmt: true},
109 {Address: 0x401541, File: file1H, Line: 6, IsStmt: true, Discriminator: 3},
110 {Address: 0x40154b, File: file1H, Line: 5, IsStmt: true, Discriminator: 3},
111 {Address: 0x40154f, File: file1H, Line: 5, IsStmt: false, Discriminator: 1},
112 {Address: 0x401555, File: file1H, Line: 7, IsStmt: true},
113 {Address: 0x40155b, File: file1C, Line: 6, IsStmt: true},
114 {Address: 0x401563, File: file1C, Line: 6, IsStmt: true},
115 {Address: 0x401568, File: file1C, Line: 7, IsStmt: true},
116 {Address: 0x40156d, File: file1C, Line: 8, IsStmt: true},
117 {Address: 0x401572, File: file1C, Line: 9, IsStmt: true},
118 {Address: 0x401578, EndSequence: true},
120 {Address: 0x401580, File: file2C, Line: 4, IsStmt: true},
121 {Address: 0x401588, File: file2C, Line: 5, IsStmt: true},
122 {Address: 0x401595, File: file2C, Line: 6, IsStmt: true},
123 {Address: 0x40159b, EndSequence: true},
125 files := [][]*LineFile{{nil, file1H, file1C}, {nil, file2C}}
127 testLineTable(t, want, files, peData(t, "testdata/line-gcc-win.bin"))
130 func TestLineELFClang(t *testing.T) {
132 // # clang --version | head -n1
133 // Ubuntu clang version 3.4-1ubuntu3 (tags/RELEASE_34/final) (based on LLVM 3.4)
134 // # clang -g -o line-clang.elf line*.
137 {Address: 0x400530, File: file1C, Line: 6, IsStmt: true},
138 {Address: 0x400534, File: file1C, Line: 7, IsStmt: true, PrologueEnd: true},
139 {Address: 0x400539, File: file1C, Line: 8, IsStmt: true},
140 {Address: 0x400545, File: file1C, Line: 9, IsStmt: true},
141 {Address: 0x400550, File: file1H, Line: 2, IsStmt: true},
142 {Address: 0x400554, File: file1H, Line: 5, IsStmt: true, PrologueEnd: true},
143 {Address: 0x400568, File: file1H, Line: 6, IsStmt: true},
144 {Address: 0x400571, File: file1H, Line: 5, IsStmt: true},
145 {Address: 0x400581, File: file1H, Line: 7, IsStmt: true},
146 {Address: 0x400583, EndSequence: true},
148 {Address: 0x400590, File: file2C, Line: 4, IsStmt: true},
149 {Address: 0x4005a0, File: file2C, Line: 5, IsStmt: true, PrologueEnd: true},
150 {Address: 0x4005a7, File: file2C, Line: 6, IsStmt: true},
151 {Address: 0x4005b0, EndSequence: true},
153 files := [][]*LineFile{{nil, file1C, file1H}, {nil, file2C}}
155 testLineTable(t, want, files, elfData(t, "testdata/line-clang.elf"))
158 func TestLineRnglists(t *testing.T) {
159 // Test a newer file, generated by clang.
160 file := &LineFile{Name: "/usr/local/google/home/iant/foo.c"}
162 {Address: 0x401020, File: file, Line: 12, IsStmt: true},
163 {Address: 0x401020, File: file, Line: 13, Column: 12, IsStmt: true, PrologueEnd: true},
164 {Address: 0x401022, File: file, Line: 13, Column: 7},
165 {Address: 0x401024, File: file, Line: 17, Column: 1, IsStmt: true},
166 {Address: 0x401027, File: file, Line: 16, Column: 10, IsStmt: true},
167 {Address: 0x40102c, EndSequence: true},
168 {Address: 0x401000, File: file, Line: 2, IsStmt: true},
169 {Address: 0x401000, File: file, Line: 6, Column: 17, IsStmt: true, PrologueEnd: true},
170 {Address: 0x401002, File: file, Line: 6, Column: 3},
171 {Address: 0x401019, File: file, Line: 9, Column: 3, IsStmt: true},
172 {Address: 0x40101a, File: file, Line: 0, Column: 3},
173 {Address: 0x40101c, File: file, Line: 9, Column: 3},
174 {Address: 0x40101d, EndSequence: true},
176 files := [][]*LineFile{{file}}
178 testLineTable(t, want, files, elfData(t, "testdata/rnglistx.elf"))
181 func TestLineSeek(t *testing.T) {
182 d := elfData(t, "testdata/line-gcc.elf")
184 // Get the line table for the first CU.
185 cu, err := d.Reader().Next()
187 t.Fatal("d.Reader().Next:", err)
189 lr, err := d.LineReader(cu)
191 t.Fatal("d.LineReader:", err)
194 // Read entries forward.
196 var posTable []LineReaderPos
197 var table []LineEntry
199 posTable = append(posTable, lr.Tell())
201 err := lr.Next(&line)
206 t.Fatal("lr.Next:", err)
208 table = append(table, line)
211 // Test that Reset returns to the first line.
213 if err := lr.Next(&line); err != nil {
214 t.Fatal("lr.Next after Reset failed:", err)
215 } else if line != table[0] {
216 t.Fatal("lr.Next after Reset returned", line, "instead of", table[0])
219 // Check that entries match when seeking backward.
220 for i := len(posTable) - 1; i >= 0; i-- {
222 err := lr.Next(&line)
223 if i == len(posTable)-1 {
225 t.Fatal("expected io.EOF after seek to end, got", err)
227 } else if err != nil {
228 t.Fatal("lr.Next after seek to", posTable[i], "failed:", err)
229 } else if line != table[i] {
230 t.Fatal("lr.Next after seek to", posTable[i], "returned", line, "instead of", table[i])
234 // Check that seeking to a PC returns the right line.
235 if err := lr.SeekPC(table[0].Address-1, &line); err != ErrUnknownPC {
236 t.Fatalf("lr.SeekPC to %#x returned %v instead of ErrUnknownPC", table[0].Address-1, err)
238 for i, testLine := range table {
239 if testLine.EndSequence {
240 if err := lr.SeekPC(testLine.Address, &line); err != ErrUnknownPC {
241 t.Fatalf("lr.SeekPC to %#x returned %v instead of ErrUnknownPC", testLine.Address, err)
246 nextPC := table[i+1].Address
247 for pc := testLine.Address; pc < nextPC; pc++ {
248 if err := lr.SeekPC(pc, &line); err != nil {
249 t.Fatalf("lr.SeekPC to %#x failed: %v", pc, err)
250 } else if line != testLine {
251 t.Fatalf("lr.SeekPC to %#x returned %v instead of %v", pc, line, testLine)
257 func testLineTable(t *testing.T, want []LineEntry, files [][]*LineFile, d *Data) {
258 // Get line table from d.
262 ent, err := dr.Next()
264 t.Fatal("dr.Next:", err)
265 } else if ent == nil {
269 if ent.Tag != TagCompileUnit {
274 // Ignore system compilation units (this happens in
275 // the Windows binary). We'll still decode the line
276 // table, but won't check it.
277 name := ent.Val(AttrName).(string)
278 ignore := strings.HasPrefix(name, "C:/crossdev/") || strings.HasPrefix(name, "../../")
280 // Decode CU's line table.
281 lr, err := d.LineReader(ent)
283 t.Fatal("d.LineReader:", err)
284 } else if lr == nil {
290 err := lr.Next(&line)
295 t.Fatal("lr.Next:", err)
297 // Ignore sources from the Windows build environment.
301 got = append(got, line)
306 if !compareFiles(files[0], lr.Files()) {
307 t.Log("File tables do not match. Got:")
308 dumpFiles(t, lr.Files())
310 dumpFiles(t, files[0])
317 // Compare line tables.
318 if !compareLines(t, got, want) {
319 t.Log("Line tables do not match. Got:")
327 func compareFiles(a, b []*LineFile) bool {
328 if len(a) != len(b) {
332 if a[i] == nil && b[i] == nil {
335 if a[i] != nil && b[i] != nil && a[i].Name == b[i].Name {
343 func dumpFiles(t *testing.T, files []*LineFile) {
344 for i, f := range files {
349 t.Logf(" %d %s", i, name)
353 func compareLines(t *testing.T, a, b []LineEntry) bool {
355 if len(a) != len(b) {
356 t.Errorf("len(a) == %d, len(b) == %d", len(a), len(b))
362 // If both are EndSequence, then the only other valid
363 // field is Address. Otherwise, test equality of all
365 if al.EndSequence && bl.EndSequence && al.Address == bl.Address {
368 if al.File.Name != bl.File.Name {
369 t.Errorf("%d: name %v != name %v", i, al.File.Name, bl.File.Name)
375 t.Errorf("%d: %#v != %#v", i, al, bl)
382 func dumpLines(t *testing.T, lines []LineEntry) {
383 for _, l := range lines {
384 t.Logf(" %+v File:%+v", l, l.File)
388 type joinTest struct {
389 dirname, filename string
393 var joinTests = []joinTest{
398 {"/a/", "b", "/a/b"},
400 {`C:\Windows\`, `System32`, `C:\Windows\System32`},
401 {`C:\Windows\`, ``, `C:\Windows\`},
402 {`C:\`, `Windows`, `C:\Windows`},
403 {`C:\Windows\`, `C:System32`, `C:\Windows\System32`},
404 {`C:\Windows`, `a/b`, `C:\Windows\a/b`},
405 {`\\host\share\`, `foo`, `\\host\share\foo`},
406 {`\\host\share\`, `foo\bar`, `\\host\share\foo\bar`},
407 {`//host/share/`, `foo/bar`, `//host/share/foo/bar`},
409 // Note: the Go compiler currently emits DWARF line table paths
410 // with '/' instead of '\' (see issues #19784, #36495). These
411 // tests are to cover cases that might come up for Windows Go
413 {`c:/workdir/go/src/x`, `y.go`, `c:/workdir/go/src/x/y.go`},
414 {`d:/some/thing/`, `b.go`, `d:/some/thing/b.go`},
415 {`e:\blah\`, `foo.c`, `e:\blah\foo.c`},
417 // The following are "best effort". We shouldn't see relative
418 // base directories in DWARF, but these test that pathJoin
419 // doesn't fail miserably if it sees one.
421 {`C:`, `a\b`, `C:a\b`},
422 {`C:.`, `a`, `C:.\a`},
423 {`C:a`, `b`, `C:a\b`},
426 func TestPathJoin(t *testing.T) {
427 for _, test := range joinTests {
428 got := PathJoin(test.dirname, test.filename)
429 if test.path != got {
430 t.Errorf("pathJoin(%q, %q) = %q, want %q", test.dirname, test.filename, got, test.path)
435 func TestPathLineReaderMalformed(t *testing.T) {
436 // This test case drawn from issue #52354. What's happening
437 // here is that the stmtList attribute in the compilation
438 // unit is malformed (negative).
439 var aranges, frame, pubnames, ranges, str []byte
440 abbrev := []byte{0x10, 0x20, 0x20, 0x20, 0x21, 0x20, 0x10, 0x21, 0x61,
441 0x0, 0x0, 0xff, 0x20, 0xff, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
442 0x20, 0x20, 0x20, 0x20, 0x20, 0x20}
443 info := []byte{0x0, 0x0, 0x0, 0x9, 0x0, 0x2, 0x0, 0x0, 0x0, 0x0,
446 Data0, err := New(abbrev, aranges, frame, info, line, pubnames, ranges, str)
448 t.Fatalf("error unexpected: %v", err)
450 Reader0 := Data0.Reader()
451 Entry0, err := Reader0.Next()
453 t.Fatalf("error unexpected: %v", err)
455 LineReader0, err := Data0.LineReader(Entry0)
457 t.Fatalf("expected error")
459 if LineReader0 != nil {
460 t.Fatalf("expected nil line reader")