263 lines
10 KiB
Python
263 lines
10 KiB
Python
"""
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Set breakpoints on objective-c class and instance methods in foundation.
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Also lookup objective-c data types and evaluate expressions.
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"""
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from __future__ import print_function
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import os, os.path, time
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import lldb
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import string
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from lldbsuite.test.lldbtest import *
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import lldbsuite.test.lldbutil as lldbutil
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file_index = 0
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@skipUnlessDarwin
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class FoundationTestCase(TestBase):
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mydir = TestBase.compute_mydir(__file__)
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def setUp(self):
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# Call super's setUp().
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TestBase.setUp(self)
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# Find the line number to break inside main().
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self.main_source = "main.m"
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self.line = line_number(self.main_source, '// Set break point at this line.')
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def test_break(self):
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"""Test setting objc breakpoints using '_regexp-break' and 'breakpoint set'."""
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self.build()
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exe = os.path.join(os.getcwd(), "a.out")
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self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET)
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# Stop at +[NSString stringWithFormat:].
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break_results = lldbutil.run_break_set_command(self, "_regexp-break +[NSString stringWithFormat:]")
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lldbutil.check_breakpoint_result (self, break_results, symbol_name='+[NSString stringWithFormat:]', num_locations=1)
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# Stop at -[MyString initWithNSString:].
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lldbutil.run_break_set_by_symbol (self, '-[MyString initWithNSString:]', num_expected_locations=1, sym_exact=True)
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# Stop at the "description" selector.
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lldbutil.run_break_set_by_selector (self, 'description', num_expected_locations=1, module_name='a.out')
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# Stop at -[NSAutoreleasePool release].
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break_results = lldbutil.run_break_set_command(self, "_regexp-break -[NSAutoreleasePool release]")
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lldbutil.check_breakpoint_result (self, break_results, symbol_name='-[NSAutoreleasePool release]', num_locations=1)
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self.runCmd("run", RUN_SUCCEEDED)
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# First stop is +[NSString stringWithFormat:].
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self.expect("thread backtrace", "Stop at +[NSString stringWithFormat:]",
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substrs = ["Foundation`+[NSString stringWithFormat:]"])
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self.runCmd("process continue")
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# Second stop is still +[NSString stringWithFormat:].
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self.expect("thread backtrace", "Stop at +[NSString stringWithFormat:]",
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substrs = ["Foundation`+[NSString stringWithFormat:]"])
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self.runCmd("process continue")
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# Followed by a.out`-[MyString initWithNSString:].
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self.expect("thread backtrace", "Stop at a.out`-[MyString initWithNSString:]",
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substrs = ["a.out`-[MyString initWithNSString:]"])
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self.runCmd("process continue")
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# Followed by -[MyString description].
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self.expect("thread backtrace", "Stop at -[MyString description]",
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substrs = ["a.out`-[MyString description]"])
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self.runCmd("process continue")
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# Followed by the same -[MyString description].
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self.expect("thread backtrace", "Stop at -[MyString description]",
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substrs = ["a.out`-[MyString description]"])
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self.runCmd("process continue")
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# Followed by -[NSAutoreleasePool release].
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self.expect("thread backtrace", "Stop at -[NSAutoreleasePool release]",
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substrs = ["Foundation`-[NSAutoreleasePool release]"])
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# rdar://problem/8542091
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# rdar://problem/8492646
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def test_data_type_and_expr(self):
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"""Lookup objective-c data types and evaluate expressions."""
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self.build()
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exe = os.path.join(os.getcwd(), "a.out")
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self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET)
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# Stop at -[MyString description].
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lldbutil.run_break_set_by_symbol (self, '-[MyString description]', num_expected_locations=1, sym_exact=True)
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# self.expect("breakpoint set -n '-[MyString description]", BREAKPOINT_CREATED,
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# startstr = "Breakpoint created: 1: name = '-[MyString description]', locations = 1")
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self.runCmd("run", RUN_SUCCEEDED)
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# The backtrace should show we stop at -[MyString description].
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self.expect("thread backtrace", "Stop at -[MyString description]",
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substrs = ["a.out`-[MyString description]"])
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# Lookup objc data type MyString and evaluate some expressions.
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self.expect("image lookup -t NSString", DATA_TYPES_DISPLAYED_CORRECTLY,
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substrs = ['name = "NSString"',
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'compiler_type = "@interface NSString'])
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self.expect("image lookup -t MyString", DATA_TYPES_DISPLAYED_CORRECTLY,
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substrs = ['name = "MyString"',
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'compiler_type = "@interface MyString',
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'NSString * str;',
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'NSDate * date;'])
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self.expect("frame variable --show-types --scope", VARIABLES_DISPLAYED_CORRECTLY,
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substrs = ["ARG: (MyString *) self"],
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patterns = ["ARG: \(.*\) _cmd",
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"(objc_selector *)|(SEL)"])
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# rdar://problem/8651752
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# don't crash trying to ask clang how many children an empty record has
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self.runCmd("frame variable *_cmd")
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# rdar://problem/8492646
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# test/foundation fails after updating to tot r115023
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# self->str displays nothing as output
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self.expect("frame variable --show-types self->str", VARIABLES_DISPLAYED_CORRECTLY,
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startstr = "(NSString *) self->str")
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# rdar://problem/8447030
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# 'frame variable self->date' displays the wrong data member
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self.expect("frame variable --show-types self->date", VARIABLES_DISPLAYED_CORRECTLY,
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startstr = "(NSDate *) self->date")
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# This should display the str and date member fields as well.
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self.expect("frame variable --show-types *self", VARIABLES_DISPLAYED_CORRECTLY,
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substrs = ["(MyString) *self",
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"(NSString *) str",
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"(NSDate *) date"])
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# isa should be accessible.
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self.expect("expression self->isa", VARIABLES_DISPLAYED_CORRECTLY,
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substrs = ["(Class)"])
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# This should fail expectedly.
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self.expect("expression self->non_existent_member",
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COMMAND_FAILED_AS_EXPECTED, error=True,
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startstr = "error: 'MyString' does not have a member named 'non_existent_member'")
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# Use expression parser.
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self.runCmd("expression self->str")
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self.runCmd("expression self->date")
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# (lldb) expression self->str
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# error: instance variable 'str' is protected
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# error: 1 errors parsing expression
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#
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# (lldb) expression self->date
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# error: instance variable 'date' is protected
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# error: 1 errors parsing expression
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#
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self.runCmd("breakpoint delete 1")
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lldbutil.run_break_set_by_file_and_line (self, "main.m", self.line, num_expected_locations=1, loc_exact=True)
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self.runCmd("process continue")
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# rdar://problem/8542091
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# test/foundation: expr -o -- my not working?
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#
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# Test new feature with r115115:
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# Add "-o" option to "expression" which prints the object description if available.
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self.expect("expression --object-description -- my", "Object description displayed correctly",
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patterns = ["Hello from.*a.out.*with timestamp: "])
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@add_test_categories(['pyapi'])
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def test_print_ivars_correctly (self):
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self.build()
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# See: <rdar://problem/8717050> lldb needs to use the ObjC runtime symbols for ivar offsets
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# Only fails for the ObjC 2.0 runtime.
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exe = os.path.join(os.getcwd(), "a.out")
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target = self.dbg.CreateTarget(exe)
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self.assertTrue(target, VALID_TARGET)
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break1 = target.BreakpointCreateByLocation(self.main_source, self.line)
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self.assertTrue(break1, VALID_BREAKPOINT)
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# Now launch the process, and do not stop at entry point.
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process = target.LaunchSimple (None, None, self.get_process_working_directory())
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self.assertTrue(process, PROCESS_IS_VALID)
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# The stop reason of the thread should be breakpoint.
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thread = process.GetThreadAtIndex(0)
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if thread.GetStopReason() != lldb.eStopReasonBreakpoint:
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from lldbsuite.test.lldbutil import stop_reason_to_str
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self.fail(STOPPED_DUE_TO_BREAKPOINT_WITH_STOP_REASON_AS %
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stop_reason_to_str(thread.GetStopReason()))
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# Make sure we stopped at the first breakpoint.
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cur_frame = thread.GetFrameAtIndex(0)
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line_number = cur_frame.GetLineEntry().GetLine()
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self.assertTrue (line_number == self.line, "Hit the first breakpoint.")
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my_var = cur_frame.FindVariable("my")
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self.assertTrue(my_var, "Made a variable object for my")
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str_var = cur_frame.FindVariable("str")
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self.assertTrue(str_var, "Made a variable object for str")
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# Now make sure that the my->str == str:
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my_str_var = my_var.GetChildMemberWithName("str")
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self.assertTrue(my_str_var, "Found a str ivar in my")
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str_value = int(str_var.GetValue(), 0)
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my_str_value = int(my_str_var.GetValue(), 0)
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self.assertTrue(str_value == my_str_value, "Got the correct value for my->str")
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def test_expression_lookups_objc(self):
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"""Test running an expression detect spurious debug info lookups (DWARF)."""
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self.build()
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exe = os.path.join(os.getcwd(), "a.out")
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self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET)
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# Stop at -[MyString initWithNSString:].
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lldbutil.run_break_set_by_symbol (self, '-[MyString initWithNSString:]', num_expected_locations=1, sym_exact=True)
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self.runCmd("run", RUN_SUCCEEDED)
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global file_index
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# Log any DWARF lookups
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++file_index
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logfile = os.path.join(os.getcwd(), "dwarf-lookups-" + self.getArchitecture() + "-" + str(file_index) + ".txt")
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self.runCmd("log enable -f %s dwarf lookups" % (logfile))
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self.runCmd("expr self")
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self.runCmd("log disable dwarf lookups")
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def cleanup():
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if os.path.exists (logfile):
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os.unlink (logfile)
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self.addTearDownHook(cleanup)
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if os.path.exists (logfile):
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f = open(logfile)
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lines = f.readlines()
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num_errors = 0
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for line in lines:
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if string.find(line, "$__lldb") != -1:
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if num_errors == 0:
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print("error: found spurious name lookups when evaluating an expression:")
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num_errors += 1
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print(line, end='')
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self.assertTrue(num_errors == 0, "Spurious lookups detected")
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f.close()
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