packages/Python/lldbsuite/test/functionalities/breakpoint/address_breakpoints/TestBadAddressBreakpoints.py

   1 """
   2 Test that breakpoints set on a bad address say they are bad.
   3 """
   4
   5 from __future__ import print_function
   6
   7
   8 import os
   9 import time
  10 import re
  11 import lldb
  12 import lldbsuite.test.lldbutil as lldbutil
  13 from lldbsuite.test.lldbtest import *
  14
  15
  16 class BadAddressBreakpointTestCase(TestBase):
  17
  18     mydir = TestBase.compute_mydir(__file__)
  19
  20     NO_DEBUG_INFO_TESTCASE = True
  21
  22     def test_bad_address_breakpoints(self):
  23         """Test that breakpoints set on a bad address say they are bad."""
  24         self.build()
  25         self.address_breakpoints()
  26
  27     def setUp(self):
  28         # Call super's setUp().
  29         TestBase.setUp(self)
  30
  31     def address_breakpoints(self):
  32         """Test that breakpoints set on a bad address say they are bad."""
  33         exe = os.path.join(os.getcwd(), "a.out")
  34
  35         # Create a target by the debugger.
  36         target = self.dbg.CreateTarget(exe)
  37         self.assertTrue(target, VALID_TARGET)
  38
  39         # Now create a breakpoint on main.c by name 'c'.
  40         breakpoint = target.BreakpointCreateBySourceRegex(
  41             "Set a breakpoint here", lldb.SBFileSpec("main.c"))
  42         self.assertTrue(breakpoint and
  43                         breakpoint.GetNumLocations() == 1,
  44                         VALID_BREAKPOINT)
  45
  46         # Get the breakpoint location from breakpoint after we verified that,
  47         # indeed, it has one location.
  48         location = breakpoint.GetLocationAtIndex(0)
  49         self.assertTrue(location and
  50                         location.IsEnabled(),
  51                         VALID_BREAKPOINT_LOCATION)
  52
  53         launch_info = lldb.SBLaunchInfo(None)
  54
  55         error = lldb.SBError()
  56
  57         process = target.Launch(launch_info, error)
  58         self.assertTrue(process, PROCESS_IS_VALID)
  59
  60         # Did we hit our breakpoint?
  61         from lldbsuite.test.lldbutil import get_threads_stopped_at_breakpoint
  62         threads = get_threads_stopped_at_breakpoint(process, breakpoint)
  63         self.assertTrue(
  64             len(threads) == 1,
  65             "There should be a thread stopped at our breakpoint")
  66
  67         # The hit count for the breakpoint should be 1.
  68         self.assertTrue(breakpoint.GetHitCount() == 1)
  69
  70         # Now see if we can read from 0.  If I can't do that, I don't have a good way to know
  71         # what an illegal address is...
  72         error.Clear()
  73
  74         ptr = process.ReadPointerFromMemory(0x0, error)
  75
  76         if not error.Success():
  77             bkpt = target.BreakpointCreateByAddress(0x0)
  78             for bp_loc in bkpt:
  79                 self.assertTrue(bp_loc.IsResolved() == False)
  80         else:
  81             self.fail(
  82                 "Could not find an illegal address at which to set a bad breakpoint.")