1""" 2Test lldb ability to unwind a stack with a function containing a call to the 3'__builtin_trap' intrinsic, which GCC (4.6) encodes to an illegal opcode. 4""" 5 6 7import lldb 8from lldbsuite.test.decorators import * 9from lldbsuite.test.lldbtest import * 10from lldbsuite.test import lldbutil 11 12 13class BuiltinTrapTestCase(TestBase): 14 def setUp(self): 15 # Call super's setUp(). 16 TestBase.setUp(self) 17 # Find the line number to break at. 18 self.line = line_number("main.cpp", "// Set break point at this line.") 19 20 # gcc generates incorrect linetable 21 @expectedFailureAll(archs="arm", compiler="gcc", triple=".*-android") 22 @expectedFailureAll(archs=["aarch64"], oslist=no_match(["freebsd", "linux"])) 23 @skipIfWindows 24 def test_with_run_command(self): 25 """Test that LLDB handles a function with __builtin_trap correctly.""" 26 self.build() 27 self.runCmd("file " + self.getBuildArtifact("a.out"), CURRENT_EXECUTABLE_SET) 28 29 lldbutil.run_break_set_by_file_and_line( 30 self, "main.cpp", self.line, num_expected_locations=1, loc_exact=True 31 ) 32 33 self.runCmd("run", RUN_SUCCEEDED) 34 35 # The stop reason of the thread should be breakpoint. 36 self.expect( 37 "thread list", 38 STOPPED_DUE_TO_BREAKPOINT, 39 substrs=["stopped", "stop reason = breakpoint"], 40 ) 41 42 # print backtrace, expect both 'bar' and 'main' functions to be listed 43 self.expect("bt", substrs=["bar", "main"]) 44 45 # go up one frame 46 self.runCmd("up", RUN_SUCCEEDED) 47 48 # evaluate a local 49 self.expect("expression foo", substrs=["= 5"]) 50