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

"""
Test that breakpoint works correctly in the presence of dead-code stripping.
"""


import lldb
from lldbsuite.test.decorators import *
from lldbsuite.test.lldbtest import *
from lldbsuite.test import lldbutil


class DeadStripTestCase(TestBase):
    def test(self):
        """Test breakpoint works correctly with dead-code stripping."""
        self.build()
        exe = self.getBuildArtifact("a.out")
        self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET)

        # Break by function name f1 (live code).
        lldbutil.run_break_set_by_symbol(
            self, "f1", num_expected_locations=1, module_name="a.out"
        )

        # Break by function name f2 (dead code).
        lldbutil.run_break_set_by_symbol(
            self, "f2", num_expected_locations=0, module_name="a.out"
        )

        # Break by function name f3 (live code).
        lldbutil.run_break_set_by_symbol(
            self, "f3", num_expected_locations=1, module_name="a.out"
        )

        self.runCmd("run", RUN_SUCCEEDED)

        # The stop reason of the thread should be breakpoint (breakpoint #1).
        self.expect(
            "thread list",
            STOPPED_DUE_TO_BREAKPOINT,
            substrs=["stopped", "a.out`f1", "stop reason = breakpoint"],
        )

        # The breakpoint should have a hit count of 1.
        lldbutil.check_breakpoint(self, bpno=1, expected_hit_count=1)

        self.runCmd("continue")

        # The stop reason of the thread should be breakpoint (breakpoint #3).
        self.expect(
            "thread list",
            STOPPED_DUE_TO_BREAKPOINT,
            substrs=["stopped", "a.out`f3", "stop reason = breakpoint"],
        )

        # The breakpoint should have a hit count of 1.
        lldbutil.check_breakpoint(self, bpno=3, expected_hit_count=1)