70 lines · python
1"""2Test that objective-c expression parser continues to work for optimized build.3 4Fixed a bug in the expression parser where the 'this'5or 'self' variable was not properly read if the compiler6optimized it into a register.7"""8 9 10import lldb11import re12 13from lldbsuite.test.decorators import *14from lldbsuite.test.lldbtest import *15from lldbsuite.test import lldbutil16 17# rdar://problem/908773918# test failure: objc_optimized does not work for "-C clang -A i386"19 20 21class ObjcOptimizedTestCase(TestBase):22 myclass = "MyClass"23 mymethod = "description"24 method_spec = "-[%s %s]" % (myclass, mymethod)25 26 @expectedFailureAll(remote=True)27 def test_break(self):28 """Test 'expr member' continues to work for optimized build."""29 self.build()30 exe = self.getBuildArtifact("a.out")31 self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET)32 33 lldbutil.run_break_set_by_symbol(34 self, self.method_spec, num_expected_locations=1, sym_exact=True35 )36 37 self.runCmd("run", RUN_SUCCEEDED)38 self.expect(39 "thread backtrace",40 STOPPED_DUE_TO_BREAKPOINT,41 substrs=["stop reason = breakpoint"],42 patterns=["frame.*0:.*%s %s" % (self.myclass, self.mymethod)],43 )44 45 self.expect("expression member", startstr="(int) $0 = 5")46 47 # <rdar://problem/12693963>48 interp = self.dbg.GetCommandInterpreter()49 result = lldb.SBCommandReturnObject()50 interp.HandleCommand("frame variable self", result)51 output = result.GetOutput()52 53 desired_pointer = "0x0"54 55 mo = re.search("0x[0-9a-f]+", output)56 57 if mo:58 desired_pointer = mo.group(0)59 60 self.expect(61 "expression (self)",62 substrs=[("(%s *) $1 = " % self.myclass), desired_pointer],63 )64 65 self.expect(66 "expression self->non_member",67 error=True,68 substrs=["does not have a member named 'non_member'"],69 )70