lldb/test/API/functionalities/dead-strip/TestDeadStrip.py

   1 """
   2 Test that breakpoint works correctly in the presence of dead-code stripping.
   3 """
   4
   5
   6 import lldb
   7 from lldbsuite.test.decorators import *
   8 from lldbsuite.test.lldbtest import *
   9 from lldbsuite.test import lldbutil
  10
  11
  12 class DeadStripTestCase(TestBase):
  13     @expectedFailureAll(oslist=["windows"], bugnumber="llvm.org/pr44429")
  14     def test(self):
  15         """Test breakpoint works correctly with dead-code stripping."""
  16         self.build()
  17         exe = self.getBuildArtifact("a.out")
  18         self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET)
  19
  20         # Break by function name f1 (live code).
  21         lldbutil.run_break_set_by_symbol(
  22             self, "f1", num_expected_locations=1, module_name="a.out"
  23         )
  24
  25         # Break by function name f2 (dead code).
  26         lldbutil.run_break_set_by_symbol(
  27             self, "f2", num_expected_locations=0, module_name="a.out"
  28         )
  29
  30         # Break by function name f3 (live code).
  31         lldbutil.run_break_set_by_symbol(
  32             self, "f3", num_expected_locations=1, module_name="a.out"
  33         )
  34
  35         self.runCmd("run", RUN_SUCCEEDED)
  36
  37         # The stop reason of the thread should be breakpoint (breakpoint #1).
  38         self.expect(
  39             "thread list",
  40             STOPPED_DUE_TO_BREAKPOINT,
  41             substrs=["stopped", "a.out`f1", "stop reason = breakpoint"],
  42         )
  43
  44         # The breakpoint should have a hit count of 1.
  45         lldbutil.check_breakpoint(self, bpno=1, expected_hit_count=1)
  46
  47         self.runCmd("continue")
  48
  49         # The stop reason of the thread should be breakpoint (breakpoint #3).
  50         self.expect(
  51             "thread list",
  52             STOPPED_DUE_TO_BREAKPOINT,
  53             substrs=["stopped", "a.out`f3", "stop reason = breakpoint"],
  54         )
  55
  56         # The breakpoint should have a hit count of 1.
  57         lldbutil.check_breakpoint(self, bpno=3, expected_hit_count=1)