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1"""
2Test that objective-c expression parser continues to work for optimized build.
3
4http://llvm.org/viewvc/llvm-project?rev=126973&view=rev
5Fixed a bug in the expression parser where the 'this'
6or 'self' variable was not properly read if the compiler
7optimized it into a register.
8"""
9
10import os, time
11import unittest2
12import lldb
13from lldbtest import *
14import lldbutil
15import re
16
17# rdar://problem/9087739
18# test failure: objc_optimized does not work for "-C clang -A i386"
19@unittest2.skipUnless(sys.platform.startswith("darwin"), "requires Darwin")
20class ObjcOptimizedTestCase(TestBase):
21
22    mydir = os.path.join("lang", "objc", "objc-optimized")
23    myclass = "MyClass"
24    mymethod = "description"
25    method_spec = "-[%s %s]" % (myclass, mymethod)
26
27    @dsym_test
28    def test_break_with_dsym(self):
29        """Test 'expr member' continues to work for optimized build."""
30        self.buildDsym()
31        self.objc_optimized()
32
33    @dwarf_test
34    def test_break_with_dwarf(self):
35        """Test 'expr member' continues to work for optimized build."""
36        self.buildDwarf()
37        self.objc_optimized()
38
39    def objc_optimized(self):
40        """Test 'expr member' continues to work for optimized build."""
41        exe = os.path.join(os.getcwd(), "a.out")
42        self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET)
43
44        lldbutil.run_break_set_by_symbol (self, self.method_spec, num_expected_locations=1, sym_exact=True)
45
46        self.runCmd("run", RUN_SUCCEEDED)
47        self.expect("thread backtrace", STOPPED_DUE_TO_BREAKPOINT,
48            substrs = ["stop reason = breakpoint"],
49            patterns = ["frame.*0:.*%s %s" % (self.myclass, self.mymethod)])
50
51        self.expect('expression member',
52            startstr = "(int) $0 = 5")
53
54        # <rdar://problem/12693963>
55        interp = self.dbg.GetCommandInterpreter()
56        result = lldb.SBCommandReturnObject()
57        interp.HandleCommand('frame variable self', result)
58        output = result.GetOutput()
59
60        desired_pointer = "0x0"
61
62        mo = re.search("0x[0-9a-f]+", output)
63
64        if mo:
65            desired_pointer = mo.group(0)
66
67        self.expect('expression (self)',
68            substrs = [("(%s *) $1 = " % self.myclass), desired_pointer])
69
70        self.expect('expression self->non_member', error=True,
71            substrs = ["does not have a member named 'non_member'"])
72
73
74if __name__ == '__main__':
75    import atexit
76    lldb.SBDebugger.Initialize()
77    atexit.register(lambda: lldb.SBDebugger.Terminate())
78    unittest2.main()
79