6d6feaf7e3
The architectures provided to skipIf / expectedFail are regular expressions (v. _match_decorator_property() in decorators.py so on Darwin systems "arm64" would match the skips for "arm" (32-bit Linux). Update these to "arm$" to prevent this, and also update three tests (TestBuiltinFormats.py, TestCrossDSOTailCalls.py, TestCrossObjectTailCalls.py) that were skipped for arm64 via this behavior, and need to be skipped or they will fail. This was moviated by the new TestDynamicValue.py test which has an expected-fail for arm, but the test was passing on arm64 Darwin resulting in failure for the CIs.
326 lines
12 KiB
Python
326 lines
12 KiB
Python
"""Test that lldb functions correctly after the inferior has asserted."""
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import lldb
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from lldbsuite.test import lldbutil
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from lldbsuite.test import lldbplatformutil
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from lldbsuite.test.decorators import *
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from lldbsuite.test.lldbtest import *
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class AssertingInferiorTestCase(TestBase):
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@expectedFailureAll(
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oslist=["windows"],
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bugnumber="llvm.org/pr21793: need to implement support for detecting assertion / abort on Windows",
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)
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@expectedFailureAll(oslist=["linux"], archs=["arm$"], bugnumber="llvm.org/pr25338")
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@expectedFailureAll(bugnumber="llvm.org/pr26592", triple="^mips")
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def test_inferior_asserting(self):
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"""Test that lldb reliably catches the inferior asserting (command)."""
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self.build()
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self.inferior_asserting()
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@expectedFailureAll(
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oslist=["windows"],
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bugnumber="llvm.org/pr21793: need to implement support for detecting assertion / abort on Windows",
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)
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@expectedFailureAndroid(api_levels=list(range(16 + 1))) # b.android.com/179836
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def test_inferior_asserting_register(self):
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"""Test that lldb reliably reads registers from the inferior after asserting (command)."""
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self.build()
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self.inferior_asserting_registers()
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@expectedFailureAll(
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oslist=["windows"],
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bugnumber="llvm.org/pr21793: need to implement support for detecting assertion / abort on Windows",
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)
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@expectedFailureAll(
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oslist=["linux"],
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archs=["arm$"],
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triple=no_match(".*-android"),
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bugnumber="llvm.org/pr25338",
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)
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@expectedFailureAll(bugnumber="llvm.org/pr26592", triple="^mips")
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def test_inferior_asserting_disassemble(self):
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"""Test that lldb reliably disassembles frames after asserting (command)."""
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self.build()
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self.inferior_asserting_disassemble()
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@add_test_categories(["pyapi"])
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@expectedFailureAll(
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oslist=["windows"],
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bugnumber="llvm.org/pr21793: need to implement support for detecting assertion / abort on Windows",
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)
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def test_inferior_asserting_python(self):
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"""Test that lldb reliably catches the inferior asserting (Python API)."""
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self.build()
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self.inferior_asserting_python()
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@expectedFailureAll(
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oslist=["windows"],
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bugnumber="llvm.org/pr21793: need to implement support for detecting assertion / abort on Windows",
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)
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@expectedFailureAll(
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oslist=["linux"],
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archs=["arm$"],
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triple=no_match(".*-android"),
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bugnumber="llvm.org/pr25338",
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)
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@expectedFailureAll(bugnumber="llvm.org/pr26592", triple="^mips")
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def test_inferior_asserting_expr(self):
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"""Test that the lldb expression interpreter can read from the inferior after asserting (command)."""
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self.build()
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self.inferior_asserting_expr()
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@expectedFailureAll(
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oslist=["windows"],
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bugnumber="llvm.org/pr21793: need to implement support for detecting assertion / abort on Windows",
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)
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@expectedFailureAll(
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oslist=["linux"],
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archs=["arm$"],
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triple=no_match(".*-android"),
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bugnumber="llvm.org/pr25338",
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)
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@expectedFailureAll(bugnumber="llvm.org/pr26592", triple="^mips")
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def test_inferior_asserting_step(self):
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"""Test that lldb functions correctly after stepping through a call to assert()."""
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self.build()
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self.inferior_asserting_step()
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def set_breakpoint(self, line):
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lldbutil.run_break_set_by_file_and_line(
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self, "main.c", line, num_expected_locations=1, loc_exact=True
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)
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def check_stop_reason(self):
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matched = lldbplatformutil.match_android_device(
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self.getArchitecture(), valid_api_levels=list(range(1, 16 + 1))
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)
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if matched:
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# On android until API-16 the abort() call ended in a sigsegv
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# instead of in a sigabrt
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stop_reason = "signal SIGSEGV"
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else:
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stop_reason = "signal SIGABRT"
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target = self.dbg.GetTargetAtIndex(0)
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process = target.GetProcess()
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thread = lldbutil.get_stopped_thread(process, lldb.eStopReasonSignal)
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pattern = "stop reason = (" + stop_reason + "|hit program assert)"
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# The stop reason of the thread should be an abort signal or exception.
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self.expect(
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"thread list",
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STOPPED_DUE_TO_ASSERT,
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patterns=[pattern],
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substrs=["stopped"],
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)
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return pattern
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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 of the call to assert.
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self.line = line_number("main.c", "// Assert here.")
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def inferior_asserting(self):
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"""Inferior asserts upon launching; lldb should catch the event and stop."""
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exe = self.getBuildArtifact("a.out")
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self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET)
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self.runCmd("run", RUN_SUCCEEDED)
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stop_reason = self.check_stop_reason()
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# And it should report a backtrace that includes the assert site.
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self.expect(
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"thread backtrace all",
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patterns=[stop_reason],
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substrs=["main", "argc", "argv"],
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)
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# And it should report the correct line number.
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self.expect(
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"thread backtrace all",
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patterns=[stop_reason],
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substrs=["main.c:%d" % self.line],
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)
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def inferior_asserting_python(self):
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"""Inferior asserts upon launching; lldb should catch the event and stop."""
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exe = self.getBuildArtifact("a.out")
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target = self.dbg.CreateTarget(exe)
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self.assertTrue(target, VALID_TARGET)
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# Now launch the process, and do not stop at entry point.
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# Both argv and envp are null.
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process = target.LaunchSimple(None, None, self.get_process_working_directory())
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if process.GetState() != lldb.eStateStopped:
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self.fail(
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"Process should be in the 'stopped' state, "
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"instead the actual state is: '%s'"
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% lldbutil.state_type_to_str(process.GetState())
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)
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thread = lldbutil.get_stopped_thread(process, lldb.eStopReasonSignal)
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if not thread:
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self.fail("Fail to stop the thread upon assert")
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if self.TraceOn():
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lldbutil.print_stacktrace(thread)
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def inferior_asserting_registers(self):
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"""Test that lldb can read registers after asserting."""
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exe = self.getBuildArtifact("a.out")
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self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET)
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self.runCmd("run", RUN_SUCCEEDED)
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self.check_stop_reason()
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# change current frame to frame 0, since recognizer might have selected
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# different frame.
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self.runCmd("frame select 0", RUN_SUCCEEDED)
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# lldb should be able to read from registers from the inferior after
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# asserting.
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lldbplatformutil.check_first_register_readable(self)
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def inferior_asserting_disassemble(self):
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"""Test that lldb can disassemble frames after asserting."""
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exe = self.getBuildArtifact("a.out")
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# Create a target by the debugger.
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target = self.dbg.CreateTarget(exe)
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self.assertTrue(target, VALID_TARGET)
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# Launch the process, and do not stop at the entry point.
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target.LaunchSimple(None, None, self.get_process_working_directory())
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self.check_stop_reason()
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process = target.GetProcess()
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self.assertTrue(process.IsValid(), "current process is valid")
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thread = process.GetThreadAtIndex(0)
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self.assertTrue(thread.IsValid(), "current thread is valid")
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lastframeID = thread.GetFrameAtIndex(thread.GetNumFrames() - 1).GetFrameID()
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isi386Arch = False
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if "i386" in self.getArchitecture():
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isi386Arch = True
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# lldb should be able to disassemble frames from the inferior after
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# asserting.
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for frame in thread:
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self.assertTrue(frame.IsValid(), "current frame is valid")
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self.runCmd("frame select " + str(frame.GetFrameID()), RUN_SUCCEEDED)
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# Don't expect the function name to be in the disassembly as the assert
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# function might be a no-return function where the PC is past the end
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# of the function and in the next function. We also can't back the PC up
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# because we don't know how much to back it up by on targets with opcodes
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# that have differing sizes
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pc_backup_offset = 1
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if frame.GetFrameID() == 0:
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pc_backup_offset = 0
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if isi386Arch:
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if lastframeID == frame.GetFrameID():
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pc_backup_offset = 0
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self.expect(
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"disassemble -a %s" % (frame.GetPC() - pc_backup_offset),
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substrs=["<+0>: "],
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)
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def check_expr_in_main(self, thread):
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depth = thread.GetNumFrames()
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for i in range(depth):
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frame = thread.GetFrameAtIndex(i)
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self.assertTrue(frame.IsValid(), "current frame is valid")
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if self.TraceOn():
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print("Checking if function %s is main" % frame.GetFunctionName())
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if "main" == frame.GetFunctionName():
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frame_id = frame.GetFrameID()
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self.runCmd("frame select " + str(frame_id), RUN_SUCCEEDED)
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self.expect("expression argc", substrs=["(int)", " = 1"])
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self.expect("expression hello_world", substrs=["Hello"])
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self.expect("expression argv[0]", substrs=["a.out"])
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self.expect("expression null_ptr", substrs=["= 0x0"])
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return True
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return False
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def inferior_asserting_expr(self):
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"""Test that the lldb expression interpreter can read symbols after asserting."""
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exe = self.getBuildArtifact("a.out")
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# Create a target by the debugger.
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target = self.dbg.CreateTarget(exe)
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self.assertTrue(target, VALID_TARGET)
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# Launch the process, and do not stop at the entry point.
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target.LaunchSimple(None, None, self.get_process_working_directory())
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self.check_stop_reason()
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process = target.GetProcess()
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self.assertTrue(process.IsValid(), "current process is valid")
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thread = process.GetThreadAtIndex(0)
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self.assertTrue(thread.IsValid(), "current thread is valid")
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# The lldb expression interpreter should be able to read from addresses
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# of the inferior after a call to assert().
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self.assertTrue(
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self.check_expr_in_main(thread), "cannot find 'main' in the backtrace"
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)
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def inferior_asserting_step(self):
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"""Test that lldb functions correctly after stepping through a call to assert()."""
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exe = self.getBuildArtifact("a.out")
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# Create a target by the debugger.
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target = self.dbg.CreateTarget(exe)
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self.assertTrue(target, VALID_TARGET)
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# Launch the process, and do not stop at the entry point.
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self.set_breakpoint(self.line)
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target.LaunchSimple(None, None, self.get_process_working_directory())
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self.expect(
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"thread list",
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STOPPED_DUE_TO_BREAKPOINT,
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substrs=["main.c:%d" % self.line, "stop reason = breakpoint"],
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)
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self.runCmd("next")
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stop_reason = self.check_stop_reason()
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# lldb should be able to read from registers from the inferior after
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# asserting.
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if "x86_64" in self.getArchitecture():
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self.expect("register read rbp", substrs=["rbp = 0x"])
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if "i386" in self.getArchitecture():
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self.expect("register read ebp", substrs=["ebp = 0x"])
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process = target.GetProcess()
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self.assertTrue(process.IsValid(), "current process is valid")
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thread = process.GetThreadAtIndex(0)
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self.assertTrue(thread.IsValid(), "current thread is valid")
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# The lldb expression interpreter should be able to read from addresses
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# of the inferior after a call to assert().
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self.assertTrue(
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self.check_expr_in_main(thread), "cannot find 'main' in the backtrace"
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)
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# And it should report the correct line number.
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self.expect(
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"thread backtrace all",
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patterns=[stop_reason],
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substrs=["main.c:%d" % self.line],
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)
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