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 compiler
6optimized it into a register.
7"""
8
9
10
11import lldb
12import re
13
14from lldbsuite.test.decorators import *
15from lldbsuite.test.lldbtest import *
16from lldbsuite.test import lldbutil
17
18# rdar://problem/9087739
19# test failure: objc_optimized does not work for "-C clang -A i386"
20
21
22class ObjcOptimizedTestCase(TestBase):
23
24    mydir = TestBase.compute_mydir(__file__)
25    myclass = "MyClass"
26    mymethod = "description"
27    method_spec = "-[%s %s]" % (myclass, mymethod)
28
29    @expectedFailureAll(remote=True)
30    def test_break(self):
31        """Test 'expr member' continues to work for optimized build."""
32        self.build()
33        exe = self.getBuildArtifact("a.out")
34        self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET)
35
36        lldbutil.run_break_set_by_symbol(
37            self,
38            self.method_spec,
39            num_expected_locations=1,
40            sym_exact=True)
41
42        self.runCmd("run", RUN_SUCCEEDED)
43        self.expect(
44            "thread backtrace",
45            STOPPED_DUE_TO_BREAKPOINT,
46            substrs=["stop reason = breakpoint"],
47            patterns=[
48                "frame.*0:.*%s %s" %
49                (self.myclass,
50                 self.mymethod)])
51
52        self.expect('expression member',
53                    startstr="(int) $0 = 5")
54
55        # <rdar://problem/12693963>
56        interp = self.dbg.GetCommandInterpreter()
57        result = lldb.SBCommandReturnObject()
58        interp.HandleCommand('frame variable self', result)
59        output = result.GetOutput()
60
61        desired_pointer = "0x0"
62
63        mo = re.search("0x[0-9a-f]+", output)
64
65        if mo:
66            desired_pointer = mo.group(0)
67
68        self.expect('expression (self)',
69                    substrs=[("(%s *) $1 = " % self.myclass), desired_pointer])
70
71        self.expect('expression self->non_member', error=True,
72                    substrs=["does not have a member named 'non_member'"])
73