Vendor import of lldb trunk r256945:

https://llvm.org/svn/llvm-project/lldb/trunk@256945

1 files changed, 253 insertions, 0 deletions

diff --git a/packages/Python/lldbsuite/test/functionalities/inferior-assert/TestInferiorAssert.py b/packages/Python/lldbsuite/test/functionalities/inferior-assert/TestInferiorAssert.py
new file mode 100644
index 0000000..69e977e
--- /dev/null
+++ b/packages/Python/lldbsuite/test/functionalities/inferior-assert/TestInferiorAssert.py
@@ -0,0 +1,253 @@
+"""Test that lldb functions correctly after the inferior has asserted."""
+
+from __future__ import print_function
+
+
+
+import os, time
+import lldb
+import lldbsuite.test.lldbutil as lldbutil
+import lldbsuite.test.lldbplatformutil as lldbplatformutil
+from lldbsuite.test.lldbtest import *
+
+class AssertingInferiorTestCase(TestBase):
+
+    mydir = TestBase.compute_mydir(__file__)
+
+    @expectedFailureWindows("llvm.org/pr21793: need to implement support for detecting assertion / abort on Windows")
+    @expectedFailurei386("llvm.org/pr25338")
+    def test_inferior_asserting(self):
+        """Test that lldb reliably catches the inferior asserting (command)."""
+        self.build()
+        self.inferior_asserting()
+
+    @expectedFailureWindows("llvm.org/pr21793: need to implement support for detecting assertion / abort on Windows")
+    @expectedFailureAndroid(api_levels=list(range(16 + 1))) # b.android.com/179836
+    def test_inferior_asserting_register(self):
+        """Test that lldb reliably reads registers from the inferior after asserting (command)."""
+        self.build()
+        self.inferior_asserting_registers()
+
+    @expectedFailureWindows("llvm.org/pr21793: need to implement support for detecting assertion / abort on Windows")
+    @expectedFailurei386("llvm.org/pr25338")
+    def test_inferior_asserting_disassemble(self):
+        """Test that lldb reliably disassembles frames after asserting (command)."""
+        self.build()
+        self.inferior_asserting_disassemble()
+
+    @add_test_categories(['pyapi'])
+    @expectedFailureWindows("llvm.org/pr21793: need to implement support for detecting assertion / abort on Windows")
+    def test_inferior_asserting_python(self):
+        """Test that lldb reliably catches the inferior asserting (Python API)."""
+        self.build()
+        self.inferior_asserting_python()
+
+    @expectedFailureWindows("llvm.org/pr21793: need to implement support for detecting assertion / abort on Windows")
+    @expectedFailurei386("llvm.org/pr25338")
+    def test_inferior_asserting_expr(self):
+        """Test that the lldb expression interpreter can read from the inferior after asserting (command)."""
+        self.build()
+        self.inferior_asserting_expr()
+
+    @expectedFailureWindows("llvm.org/pr21793: need to implement support for detecting assertion / abort on Windows")
+    @expectedFailurei386("llvm.org/pr25338")
+    def test_inferior_asserting_step(self):
+        """Test that lldb functions correctly after stepping through a call to assert()."""
+        self.build()
+        self.inferior_asserting_step()
+
+    def set_breakpoint(self, line):
+        lldbutil.run_break_set_by_file_and_line (self, "main.c", line, num_expected_locations=1, loc_exact=True)
+
+    def check_stop_reason(self):
+        if matchAndroid(api_levels=list(range(1, 16+1)))(self):
+            # On android until API-16 the abort() call ended in a sigsegv instead of in a sigabrt
+            stop_reason = 'stop reason = signal SIGSEGV'
+        else:
+            stop_reason = 'stop reason = signal SIGABRT'
+
+        # The stop reason of the thread should be an abort signal or exception.
+        self.expect("thread list", STOPPED_DUE_TO_ASSERT,
+            substrs = ['stopped',
+                       stop_reason])
+
+        return stop_reason
+
+    def setUp(self):
+        # Call super's setUp().
+        TestBase.setUp(self)
+        # Find the line number of the call to assert.
+        self.line = line_number('main.c', '// Assert here.')
+
+    def inferior_asserting(self):
+        """Inferior asserts upon launching; lldb should catch the event and stop."""
+        exe = os.path.join(os.getcwd(), "a.out")
+        self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET)
+
+        self.runCmd("run", RUN_SUCCEEDED)
+        stop_reason = self.check_stop_reason()
+
+        # And it should report a backtrace that includes the assert site.
+        self.expect("thread backtrace all",
+            substrs = [stop_reason, 'main', 'argc', 'argv'])
+
+        # And it should report the correct line number.
+        self.expect("thread backtrace all",
+            substrs = [stop_reason,
+                       'main.c:%d' % self.line])
+
+    def inferior_asserting_python(self):
+        """Inferior asserts upon launching; lldb should catch the event and stop."""
+        exe = os.path.join(os.getcwd(), "a.out")
+
+        target = self.dbg.CreateTarget(exe)
+        self.assertTrue(target, VALID_TARGET)
+
+        # Now launch the process, and do not stop at entry point.
+        # Both argv and envp are null.
+        process = target.LaunchSimple (None, None, self.get_process_working_directory())
+
+        if process.GetState() != lldb.eStateStopped:
+            self.fail("Process should be in the 'stopped' state, "
+                      "instead the actual state is: '%s'" %
+                      lldbutil.state_type_to_str(process.GetState()))
+
+        thread = lldbutil.get_stopped_thread(process, lldb.eStopReasonSignal)
+        if not thread:
+            self.fail("Fail to stop the thread upon assert")
+
+        if self.TraceOn():
+            lldbutil.print_stacktrace(thread)
+
+    def inferior_asserting_registers(self):
+        """Test that lldb can read registers after asserting."""
+        exe = os.path.join(os.getcwd(), "a.out")
+        self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET)
+
+        self.runCmd("run", RUN_SUCCEEDED)
+        self.check_stop_reason()
+
+        # lldb should be able to read from registers from the inferior after asserting.
+        lldbplatformutil.check_first_register_readable(self)
+
+    def inferior_asserting_disassemble(self):
+        """Test that lldb can disassemble frames after asserting."""
+        exe = os.path.join(os.getcwd(), "a.out")
+
+        # Create a target by the debugger.
+        target = self.dbg.CreateTarget(exe)
+        self.assertTrue(target, VALID_TARGET)
+
+        # Launch the process, and do not stop at the entry point.
+        target.LaunchSimple (None, None, self.get_process_working_directory())
+        self.check_stop_reason()
+
+        process = target.GetProcess()
+        self.assertTrue(process.IsValid(), "current process is valid")
+
+        thread = process.GetThreadAtIndex(0)
+        self.assertTrue(thread.IsValid(), "current thread is valid")
+
+        lastframeID = thread.GetFrameAtIndex(thread.GetNumFrames() - 1).GetFrameID()
+
+        isi386Arch = False
+        if "i386" in self.getArchitecture():
+            isi386Arch = True
+
+        # lldb should be able to disassemble frames from the inferior after asserting.
+        for frame in thread:
+            self.assertTrue(frame.IsValid(), "current frame is valid")
+
+            self.runCmd("frame select " + str(frame.GetFrameID()), RUN_SUCCEEDED)
+
+            # Don't expect the function name to be in the disassembly as the assert
+            # function might be a no-return function where the PC is past the end
+            # of the function and in the next function. We also can't back the PC up
+            # because we don't know how much to back it up by on targets with opcodes
+            # that have differing sizes
+            pc_backup_offset = 1
+            if frame.GetFrameID() == 0:
+                pc_backup_offset = 0
+            if isi386Arch == True:
+                if lastframeID == frame.GetFrameID():
+                    pc_backup_offset = 0
+            self.expect("disassemble -a %s" % (frame.GetPC() - pc_backup_offset),
+                    substrs = ['<+0>: '])
+
+    def check_expr_in_main(self, thread):
+        depth = thread.GetNumFrames()
+        for i in range(depth):
+            frame = thread.GetFrameAtIndex(i)
+            self.assertTrue(frame.IsValid(), "current frame is valid")
+            if self.TraceOn():
+                print("Checking if function %s is main" % frame.GetFunctionName())
+
+            if 'main' == frame.GetFunctionName():
+                frame_id = frame.GetFrameID()
+                self.runCmd("frame select " + str(frame_id), RUN_SUCCEEDED)
+                self.expect("p argc", substrs = ['(int)', ' = 1'])
+                self.expect("p hello_world", substrs = ['Hello'])
+                self.expect("p argv[0]", substrs = ['a.out'])
+                self.expect("p null_ptr", substrs = ['= 0x0'])
+                return True 
+        return False 
+
+    def inferior_asserting_expr(self):
+        """Test that the lldb expression interpreter can read symbols after asserting."""
+        exe = os.path.join(os.getcwd(), "a.out")
+
+        # Create a target by the debugger.
+        target = self.dbg.CreateTarget(exe)
+        self.assertTrue(target, VALID_TARGET)
+
+        # Launch the process, and do not stop at the entry point.
+        target.LaunchSimple (None, None, self.get_process_working_directory())
+        self.check_stop_reason()
+
+        process = target.GetProcess()
+        self.assertTrue(process.IsValid(), "current process is valid")
+
+        thread = process.GetThreadAtIndex(0)
+        self.assertTrue(thread.IsValid(), "current thread is valid")
+
+        # The lldb expression interpreter should be able to read from addresses of the inferior after a call to assert().
+        self.assertTrue(self.check_expr_in_main(thread), "cannot find 'main' in the backtrace")
+
+    def inferior_asserting_step(self):
+        """Test that lldb functions correctly after stepping through a call to assert()."""
+        exe = os.path.join(os.getcwd(), "a.out")
+
+        # Create a target by the debugger.
+        target = self.dbg.CreateTarget(exe)
+        self.assertTrue(target, VALID_TARGET)
+
+        # Launch the process, and do not stop at the entry point.
+        self.set_breakpoint(self.line)
+        target.LaunchSimple (None, None, self.get_process_working_directory())
+
+        self.expect("thread list", STOPPED_DUE_TO_BREAKPOINT,
+            substrs = ['main.c:%d' % self.line,
+                       'stop reason = breakpoint'])
+
+        self.runCmd("next")
+        stop_reason = self.check_stop_reason()
+
+        # lldb should be able to read from registers from the inferior after asserting.
+        if "x86_64" in self.getArchitecture():
+            self.expect("register read rbp", substrs = ['rbp = 0x'])
+        if "i386" in self.getArchitecture():
+            self.expect("register read ebp", substrs = ['ebp = 0x'])
+
+        process = target.GetProcess()
+        self.assertTrue(process.IsValid(), "current process is valid")
+
+        thread = process.GetThreadAtIndex(0)
+        self.assertTrue(thread.IsValid(), "current thread is valid")
+
+        # The lldb expression interpreter should be able to read from addresses of the inferior after a call to assert().
+        self.assertTrue(self.check_expr_in_main(thread), "cannot find 'main' in the backtrace")
+
+        # And it should report the correct line number.
+        self.expect("thread backtrace all",
+            substrs = [stop_reason,
+                       'main.c:%d' % self.line])