1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
| """
Set breakpoints on objective-c class and instance methods in foundation.
Also lookup objective-c data types and evaluate expressions.
"""
from __future__ import print_function
import os
import os.path
import lldb
from lldbsuite.test.decorators import *
from lldbsuite.test.lldbtest import *
from lldbsuite.test import lldbutil
file_index = 0
@skipUnlessDarwin
class FoundationTestCase(TestBase):
mydir = TestBase.compute_mydir(__file__)
def setUp(self):
# Call super's setUp().
TestBase.setUp(self)
# Find the line number to break inside main().
self.main_source = "main.m"
self.line = line_number(
self.main_source,
'// Set break point at this line.')
def test_break(self):
"""Test setting objc breakpoints using '_regexp-break' and 'breakpoint set'."""
self.build()
exe = self.getBuildArtifact("a.out")
self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET)
# Stop at +[NSString stringWithFormat:].
break_results = lldbutil.run_break_set_command(
self, "_regexp-break +[NSString stringWithFormat:]")
lldbutil.check_breakpoint_result(
self,
break_results,
symbol_name='+[NSString stringWithFormat:]',
num_locations=1)
# Stop at -[MyString initWithNSString:].
lldbutil.run_break_set_by_symbol(
self,
'-[MyString initWithNSString:]',
num_expected_locations=1,
sym_exact=True)
# Stop at the "description" selector.
lldbutil.run_break_set_by_selector(
self,
'description',
num_expected_locations=1,
module_name='a.out')
# Stop at -[NSAutoreleasePool release].
break_results = lldbutil.run_break_set_command(
self, "_regexp-break -[NSAutoreleasePool release]")
lldbutil.check_breakpoint_result(
self,
break_results,
symbol_name='-[NSAutoreleasePool release]',
num_locations=1)
self.runCmd("run", RUN_SUCCEEDED)
# First stop is +[NSString stringWithFormat:].
self.expect(
"thread backtrace",
"Stop at +[NSString stringWithFormat:]",
substrs=["Foundation`+[NSString stringWithFormat:]"])
self.runCmd("process continue")
# Second stop is still +[NSString stringWithFormat:].
self.expect(
"thread backtrace",
"Stop at +[NSString stringWithFormat:]",
substrs=["Foundation`+[NSString stringWithFormat:]"])
self.runCmd("process continue")
# Followed by a.out`-[MyString initWithNSString:].
self.expect(
"thread backtrace",
"Stop at a.out`-[MyString initWithNSString:]",
substrs=["a.out`-[MyString initWithNSString:]"])
self.runCmd("process continue")
# Followed by -[MyString description].
self.expect("thread backtrace", "Stop at -[MyString description]",
substrs=["a.out`-[MyString description]"])
self.runCmd("process continue")
# Followed by the same -[MyString description].
self.expect("thread backtrace", "Stop at -[MyString description]",
substrs=["a.out`-[MyString description]"])
self.runCmd("process continue")
# Followed by -[NSAutoreleasePool release].
self.expect("thread backtrace", "Stop at -[NSAutoreleasePool release]",
substrs=["Foundation`-[NSAutoreleasePool release]"])
# rdar://problem/8542091
# rdar://problem/8492646
def test_data_type_and_expr(self):
"""Lookup objective-c data types and evaluate expressions."""
self.build()
exe = self.getBuildArtifact("a.out")
self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET)
# Stop at -[MyString description].
lldbutil.run_break_set_by_symbol(
self,
'-[MyString description]',
num_expected_locations=1,
sym_exact=True)
# self.expect("breakpoint set -n '-[MyString description]", BREAKPOINT_CREATED,
# startstr = "Breakpoint created: 1: name = '-[MyString description]',
# locations = 1")
self.runCmd("run", RUN_SUCCEEDED)
# The backtrace should show we stop at -[MyString description].
self.expect("thread backtrace", "Stop at -[MyString description]",
substrs=["a.out`-[MyString description]"])
# Lookup objc data type MyString and evaluate some expressions.
self.expect("image lookup -t NSString", DATA_TYPES_DISPLAYED_CORRECTLY,
substrs=['name = "NSString"',
'compiler_type = "@interface NSString'])
self.expect("image lookup -t MyString", DATA_TYPES_DISPLAYED_CORRECTLY,
substrs=['name = "MyString"',
'compiler_type = "@interface MyString',
'NSString * str;',
'NSDate * date;'])
self.expect(
"frame variable --show-types --scope",
VARIABLES_DISPLAYED_CORRECTLY,
substrs=["ARG: (MyString *) self"],
patterns=[
"ARG: \(.*\) _cmd",
"(objc_selector *)|(SEL)"])
# rdar://problem/8651752
# don't crash trying to ask clang how many children an empty record has
self.runCmd("frame variable *_cmd")
# rdar://problem/8492646
# test/foundation fails after updating to tot r115023
# self->str displays nothing as output
self.expect(
"frame variable --show-types self->str",
VARIABLES_DISPLAYED_CORRECTLY,
startstr="(NSString *) self->str")
# rdar://problem/8447030
# 'frame variable self->date' displays the wrong data member
self.expect(
"frame variable --show-types self->date",
VARIABLES_DISPLAYED_CORRECTLY,
startstr="(NSDate *) self->date")
# This should display the str and date member fields as well.
self.expect(
"frame variable --show-types *self",
VARIABLES_DISPLAYED_CORRECTLY,
substrs=[
"(MyString) *self",
"(NSString *) str",
"(NSDate *) date"])
# isa should be accessible.
self.expect("expression self->isa", VARIABLES_DISPLAYED_CORRECTLY,
substrs=["(Class)"])
# This should fail expectedly.
self.expect(
"expression self->non_existent_member",
COMMAND_FAILED_AS_EXPECTED,
error=True,
substrs=["error:", "'MyString' does not have a member named 'non_existent_member'"])
# Use expression parser.
self.runCmd("expression self->str")
self.runCmd("expression self->date")
# (lldb) expression self->str
# error: instance variable 'str' is protected
# error: 1 errors parsing expression
#
# (lldb) expression self->date
# error: instance variable 'date' is protected
# error: 1 errors parsing expression
#
self.runCmd("breakpoint delete 1")
lldbutil.run_break_set_by_file_and_line(
self, "main.m", self.line, num_expected_locations=1, loc_exact=True)
self.runCmd("process continue")
# rdar://problem/8542091
# test/foundation: expr -o -- my not working?
#
# Test new feature with r115115:
# Add "-o" option to "expression" which prints the object description
# if available.
self.expect(
"expression --object-description -- my",
"Object description displayed correctly",
patterns=["Hello from.*a.out.*with timestamp: "])
@add_test_categories(['pyapi'])
def test_print_ivars_correctly(self):
self.build()
# See: <rdar://problem/8717050> lldb needs to use the ObjC runtime symbols for ivar offsets
# Only fails for the ObjC 2.0 runtime.
exe = self.getBuildArtifact("a.out")
target = self.dbg.CreateTarget(exe)
self.assertTrue(target, VALID_TARGET)
break1 = target.BreakpointCreateByLocation(self.main_source, self.line)
self.assertTrue(break1, VALID_BREAKPOINT)
# Now launch the process, and do not stop at entry point.
process = target.LaunchSimple(
None, None, self.get_process_working_directory())
self.assertTrue(process, PROCESS_IS_VALID)
# The stop reason of the thread should be breakpoint.
thread = process.GetThreadAtIndex(0)
if thread.GetStopReason() != lldb.eStopReasonBreakpoint:
from lldbsuite.test.lldbutil import stop_reason_to_str
self.fail(STOPPED_DUE_TO_BREAKPOINT_WITH_STOP_REASON_AS %
stop_reason_to_str(thread.GetStopReason()))
# Make sure we stopped at the first breakpoint.
cur_frame = thread.GetFrameAtIndex(0)
line_number = cur_frame.GetLineEntry().GetLine()
self.assertTrue(line_number == self.line, "Hit the first breakpoint.")
my_var = cur_frame.FindVariable("my")
self.assertTrue(my_var, "Made a variable object for my")
str_var = cur_frame.FindVariable("str")
self.assertTrue(str_var, "Made a variable object for str")
# Now make sure that the my->str == str:
my_str_var = my_var.GetChildMemberWithName("str")
self.assertTrue(my_str_var, "Found a str ivar in my")
str_value = int(str_var.GetValue(), 0)
my_str_value = int(my_str_var.GetValue(), 0)
self.assertTrue(
str_value == my_str_value,
"Got the correct value for my->str")
def test_expression_lookups_objc(self):
"""Test running an expression detect spurious debug info lookups (DWARF)."""
self.build()
exe = self.getBuildArtifact("a.out")
self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET)
# Stop at -[MyString initWithNSString:].
lldbutil.run_break_set_by_symbol(
self,
'-[MyString initWithNSString:]',
num_expected_locations=1,
sym_exact=True)
self.runCmd("run", RUN_SUCCEEDED)
global file_index
# Log any DWARF lookups
++file_index
logfile = os.path.join(
self.getBuildDir(),
"dwarf-lookups-" +
self.getArchitecture() +
"-" +
str(file_index) +
".txt")
self.runCmd("log enable -f %s dwarf lookups" % (logfile))
self.runCmd("expr self")
self.runCmd("log disable dwarf lookups")
def cleanup():
if os.path.exists(logfile):
os.unlink(logfile)
self.addTearDownHook(cleanup)
if os.path.exists(logfile):
f = open(logfile)
lines = f.readlines()
num_errors = 0
for line in lines:
if "$__lldb" in line:
if num_errors == 0:
print(
"error: found spurious name lookups when evaluating an expression:")
num_errors += 1
print(line, end='')
self.assertTrue(num_errors == 0, "Spurious lookups detected")
f.close()
|