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"""
Test thread step-in, step-over and step-out work with the "Avoid no debug" option.
"""
from __future__ import print_function
import os
import re
import lldb
import lldbsuite.test.lldbutil as lldbutil
import sys
from lldbsuite.test.lldbtest import *
class ReturnValueTestCase(TestBase):
mydir = TestBase.compute_mydir(__file__)
@add_test_categories(['pyapi'])
def test_step_out_with_python(self):
"""Test stepping out using avoid-no-debug with dsyms."""
self.build()
self.get_to_starting_point()
self.do_step_out_past_nodebug()
@add_test_categories(['pyapi'])
@expectedFailureGcc("llvm.org/pr19247")
def test_step_over_with_python(self):
"""Test stepping over using avoid-no-debug with dwarf."""
self.build()
self.get_to_starting_point()
self.do_step_over_past_nodebug()
@add_test_categories(['pyapi'])
@expectedFailureGcc("llvm.org/pr19247")
def test_step_in_with_python(self):
"""Test stepping in using avoid-no-debug with dwarf."""
self.build()
self.get_to_starting_point()
self.do_step_in_past_nodebug()
def setUp (self):
TestBase.setUp(self)
self.main_source = "with-debug.c"
self.main_source_spec = lldb.SBFileSpec("with-debug.c")
self.dbg.HandleCommand ("settings set target.process.thread.step-out-avoid-nodebug true")
def tearDown (self):
self.dbg.HandleCommand ("settings set target.process.thread.step-out-avoid-nodebug false")
TestBase.tearDown(self)
def hit_correct_line (self, pattern):
target_line = line_number (self.main_source, pattern)
self.assertTrue (target_line != 0, "Could not find source pattern " + pattern)
cur_line = self.thread.frames[0].GetLineEntry().GetLine()
self.assertTrue (cur_line == target_line, "Stepped to line %d instead of expected %d with pattern '%s'."%(cur_line, target_line, pattern))
def hit_correct_function (self, pattern):
name = self.thread.frames[0].GetFunctionName()
self.assertTrue (pattern in name, "Got to '%s' not the expected function '%s'."%(name, pattern))
def get_to_starting_point (self):
exe = os.path.join(os.getcwd(), "a.out")
error = lldb.SBError()
self.target = self.dbg.CreateTarget(exe)
self.assertTrue(self.target, VALID_TARGET)
inner_bkpt = self.target.BreakpointCreateBySourceRegex("Stop here and step out of me", self.main_source_spec)
self.assertTrue(inner_bkpt, VALID_BREAKPOINT)
# Now launch the process, and do not stop at entry point.
self.process = self.target.LaunchSimple (None, None, self.get_process_working_directory())
self.assertTrue(self.process, PROCESS_IS_VALID)
# Now finish, and make sure the return value is correct.
threads = lldbutil.get_threads_stopped_at_breakpoint (self.process, inner_bkpt)
self.assertTrue(len(threads) == 1, "Stopped at inner breakpoint.")
self.thread = threads[0]
def do_step_out_past_nodebug(self):
# The first step out takes us to the called_from_nodebug frame, just to make sure setting
# step-out-avoid-nodebug doesn't change the behavior in frames with debug info.
self.thread.StepOut()
self.hit_correct_line ("intermediate_return_value = called_from_nodebug_actual(some_value)")
self.thread.StepOut()
self.hit_correct_line ("int return_value = no_debug_caller(5, called_from_nodebug)")
def do_step_over_past_nodebug (self):
self.thread.StepOver()
self.hit_correct_line ("intermediate_return_value = called_from_nodebug_actual(some_value)")
self.thread.StepOver()
self.hit_correct_line ("return intermediate_return_value")
self.thread.StepOver()
# Note, lldb doesn't follow gdb's distinction between "step-out" and "step-over/step-in"
# when exiting a frame. In all cases we leave the pc at the point where we exited the
# frame. In gdb, step-over/step-in move to the end of the line they stepped out to.
# If we ever change this we will need to fix this test.
self.hit_correct_line ("int return_value = no_debug_caller(5, called_from_nodebug)")
def do_step_in_past_nodebug (self):
self.thread.StepInto()
self.hit_correct_line ("intermediate_return_value = called_from_nodebug_actual(some_value)")
self.thread.StepInto()
self.hit_correct_line ("return intermediate_return_value")
self.thread.StepInto()
# Note, lldb doesn't follow gdb's distinction between "step-out" and "step-over/step-in"
# when exiting a frame. In all cases we leave the pc at the point where we exited the
# frame. In gdb, step-over/step-in move to the end of the line they stepped out to.
# If we ever change this we will need to fix this test.
self.hit_correct_line ("int return_value = no_debug_caller(5, called_from_nodebug)")
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