lldb/test/lang/cpp/this/TestCPPThis.py

"""
Tests that C++ member and static variables are available where they should be.
"""
import lldb
from lldbtest import *
import lldbutil

class CPPThisTestCase(TestBase):
    
    mydir = TestBase.compute_mydir(__file__)
    
    @unittest2.skipUnless(sys.platform.startswith("darwin"), "requires Darwin")
    #rdar://problem/9962849
    #@expectedFailureClang
    @dsym_test
    def test_with_dsym_and_run_command(self):
        """Test that the appropriate member variables are available when stopped in C++ static, inline, and const methods"""
        self.buildDsym()
        self.static_method_commands()

    #rdar://problem/9962849
    @expectedFailureGcc # llvm.org/pr15439 The 'this' pointer isn't available during expression evaluation when stopped in an inlined member function.
    @expectedFailureIcc # ICC doesn't emit correct DWARF inline debug info for inlined member functions
    @dwarf_test
    def test_with_dwarf_and_run_command(self):
        """Test that the appropriate member variables are available when stopped in C++ static, inline, and const methods"""
        self.buildDwarf()
        self.static_method_commands()

    def setUp(self):
        TestBase.setUp(self)
    
    def set_breakpoint(self, line):
        lldbutil.run_break_set_by_file_and_line (self, "main.cpp", line, num_expected_locations=1, loc_exact=False)

    def static_method_commands(self):
        """Test that the appropriate member variables are available when stopped in C++ static, inline, and const methods"""
        self.runCmd("file a.out", CURRENT_EXECUTABLE_SET)

        self.set_breakpoint(line_number('main.cpp', '// breakpoint 1'))
        self.set_breakpoint(line_number('main.cpp', '// breakpoint 2'))
        self.set_breakpoint(line_number('main.cpp', '// breakpoint 3'))
        self.set_breakpoint(line_number('main.cpp', '// breakpoint 4'))

        self.runCmd("process launch", RUN_SUCCEEDED)

        self.expect("expression -- m_a = 2",
                    startstr = "(int) $0 = 2")
        
        self.runCmd("process continue")
        
        # This would be disallowed if we enforced const.  But we don't.
        self.expect("expression -- m_a = 2",
                    startstr = "(int) $1 = 2")
        
        self.expect("expression -- (int)getpid(); m_a", 
                    startstr = "(int) $2 = 2")

        self.runCmd("process continue")

        self.expect("expression -- s_a",
                    startstr = "(int) $3 = 5")

        self.runCmd("process continue")

        self.expect("expression -- m_a",
                    startstr = "(int) $4 = 2")

if __name__ == '__main__':
    import atexit
    lldb.SBDebugger.Initialize()
    atexit.register(lambda: lldb.SBDebugger.Terminate())
    unittest2.main()