| """ | |
| Test that objective-c expression parser continues to work for optimized build. | |
| Fixed a bug in the expression parser where the 'this' | |
| or 'self' variable was not properly read if the compiler | |
| optimized it into a register. | |
| """ | |
| import lldb | |
| import re | |
| from lldbsuite.test.decorators import * | |
| from lldbsuite.test.lldbtest import * | |
| from lldbsuite.test import lldbutil | |
| # rdar://problem/9087739 | |
| # test failure: objc_optimized does not work for "-C clang -A i386" | |
| class ObjcOptimizedTestCase(TestBase): | |
| myclass = "MyClass" | |
| mymethod = "description" | |
| method_spec = "-[%s %s]" % (myclass, mymethod) | |
| @expectedFailureAll(remote=True) | |
| def test_break(self): | |
| """Test 'expr member' continues to work for optimized build.""" | |
| self.build() | |
| exe = self.getBuildArtifact("a.out") | |
| self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET) | |
| lldbutil.run_break_set_by_symbol( | |
| self, self.method_spec, num_expected_locations=1, sym_exact=True | |
| ) | |
| self.runCmd("run", RUN_SUCCEEDED) | |
| self.expect( | |
| "thread backtrace", | |
| STOPPED_DUE_TO_BREAKPOINT, | |
| substrs=["stop reason = breakpoint"], | |
| patterns=["frame.*0:.*%s %s" % (self.myclass, self.mymethod)], | |
| ) | |
| self.expect("expression member", startstr="(int) $0 = 5") | |
| # <rdar://problem/12693963> | |
| interp = self.dbg.GetCommandInterpreter() | |
| result = lldb.SBCommandReturnObject() | |
| interp.HandleCommand("frame variable self", result) | |
| output = result.GetOutput() | |
| desired_pointer = "0x0" | |
| mo = re.search("0x[0-9a-f]+", output) | |
| if mo: | |
| desired_pointer = mo.group(0) | |
| # Use FixAddress to strip top-byte metadata (PtrAuth tags, MTE tags). | |
| process = self.dbg.GetSelectedTarget().GetProcess() | |
| desired_addr = process.FixAddress(int(desired_pointer, 16)) | |
| self.expect( | |
| "expression (self)", | |
| substrs=["(%s *) $1 = " % self.myclass], | |
| ) | |
| interp.HandleCommand("expression (self)", result) | |
| expr_output = result.GetOutput() | |
| mo = re.search("0x[0-9a-f]+", expr_output) | |
| self.assertTrue(mo, "Expected a pointer in expression output") | |
| expr_addr = process.FixAddress(int(mo.group(0), 16)) | |
| self.assertEqual(desired_addr, expr_addr) | |
| self.expect( | |
| "expression self->non_member", | |
| error=True, | |
| substrs=["does not have a member named 'non_member'"], | |
| ) |