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"""
Test the use of setjmp/longjmp for non-local goto operations in a single-threaded inferior.
"""
from __future__ import print_function
import os
import lldb
from lldbsuite.test.decorators import *
from lldbsuite.test.lldbtest import *
from lldbsuite.test import lldbutil
class LongjmpTestCase(TestBase):
mydir = TestBase.compute_mydir(__file__)
def setUp(self):
TestBase.setUp(self)
@skipIfDarwin # llvm.org/pr16769: LLDB on Mac OS X dies in function ReadRegisterBytes in GDBRemoteRegisterContext.cpp
@skipIfFreeBSD # llvm.org/pr17214
@expectedFailureAll(oslist=["linux"], bugnumber="llvm.org/pr20231")
@expectedFailureAll(oslist=["windows"], bugnumber="llvm.org/pr24778")
def test_step_out(self):
"""Test stepping when the inferior calls setjmp/longjmp, in particular, thread step-out."""
self.build()
self.step_out()
@skipIfDarwin # llvm.org/pr16769: LLDB on Mac OS X dies in function ReadRegisterBytes in GDBRemoteRegisterContext.cpp
@skipIfFreeBSD # llvm.org/pr17214
@expectedFailureAll(oslist=["linux"], bugnumber="llvm.org/pr20231")
@expectedFailureAll(oslist=["windows"], bugnumber="llvm.org/pr24778")
def test_step_over(self):
"""Test stepping when the inferior calls setjmp/longjmp, in particular, thread step-over a longjmp."""
self.build()
self.step_over()
@skipIfDarwin # llvm.org/pr16769: LLDB on Mac OS X dies in function ReadRegisterBytes in GDBRemoteRegisterContext.cpp
@skipIfFreeBSD # llvm.org/pr17214
@expectedFailureAll(oslist=["linux"], bugnumber="llvm.org/pr20231")
@expectedFailureAll(oslist=["windows"], bugnumber="llvm.org/pr24778")
def test_step_back_out(self):
"""Test stepping when the inferior calls setjmp/longjmp, in particular, thread step-out after thread step-in."""
self.build()
self.step_back_out()
def start_test(self, symbol):
exe = os.path.join(os.getcwd(), "a.out")
self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET)
# Break in main().
lldbutil.run_break_set_by_symbol(
self, symbol, num_expected_locations=-1)
self.runCmd("run", RUN_SUCCEEDED)
# The stop reason of the thread should be breakpoint.
self.expect("thread list", STOPPED_DUE_TO_BREAKPOINT,
substrs=['stopped', 'stop reason = breakpoint'])
def check_status(self):
# Note: Depending on the generated mapping of DWARF to assembly,
# the process may have stopped or exited.
self.expect("process status", PROCESS_STOPPED,
patterns=['Process .* exited with status = 0'])
def step_out(self):
self.start_test("do_jump")
self.runCmd("thread step-out", RUN_SUCCEEDED)
self.check_status()
def step_over(self):
self.start_test("do_jump")
self.runCmd("thread step-over", RUN_SUCCEEDED)
self.runCmd("thread step-over", RUN_SUCCEEDED)
self.check_status()
def step_back_out(self):
self.start_test("main")
self.runCmd("thread step-over", RUN_SUCCEEDED)
self.runCmd("thread step-in", RUN_SUCCEEDED)
self.runCmd("thread step-out", RUN_SUCCEEDED)
self.check_status()
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