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    myclass = "MyClass"
24    mymethod = "description"
25    method_spec = "-[%s %s]" % (myclass, mymethod)
26
27    @expectedFailureAll(remote=True)
28    def test_break(self):
29        """Test 'expr member' continues to work for optimized build."""
30        self.build()
31        exe = self.getBuildArtifact("a.out")
32        self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET)
33
34        lldbutil.run_break_set_by_symbol(
35            self,
36            self.method_spec,
37            num_expected_locations=1,
38            sym_exact=True)
39
40        self.runCmd("run", RUN_SUCCEEDED)
41        self.expect(
42            "thread backtrace",
43            STOPPED_DUE_TO_BREAKPOINT,
44            substrs=["stop reason = breakpoint"],
45            patterns=[
46                "frame.*0:.*%s %s" %
47                (self.myclass,
48                 self.mymethod)])
49
50        self.expect('expression member',
51                    startstr="(int) $0 = 5")
52
53        # <rdar://problem/12693963>
54        interp = self.dbg.GetCommandInterpreter()
55        result = lldb.SBCommandReturnObject()
56        interp.HandleCommand('frame variable self', result)
57        output = result.GetOutput()
58
59        desired_pointer = "0x0"
60
61        mo = re.search("0x[0-9a-f]+", output)
62
63        if mo:
64            desired_pointer = mo.group(0)
65
66        self.expect('expression (self)',
67                    substrs=[("(%s *) $1 = " % self.myclass), desired_pointer])
68
69        self.expect('expression self->non_member', error=True,
70                    substrs=["does not have a member named 'non_member'"])
71