lldb/test/API/lang/objc/objc-optimized/TestObjcOptimized.py

   1 """
   2 Test that objective-c expression parser continues to work for optimized build.
   3
   4 Fixed a bug in the expression parser where the 'this'
   5 or 'self' variable was not properly read if the compiler
   6 optimized it into a register.
   7 """
   8
   9
  10 import lldb
  11 import re
  12
  13 from lldbsuite.test.decorators import *
  14 from lldbsuite.test.lldbtest import *
  15 from lldbsuite.test import lldbutil
  16
  17 # rdar://problem/9087739
  18 # test failure: objc_optimized does not work for "-C clang -A i386"
  19
  20
  21 class 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=True
  35         )
  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         )