| """Test that anonymous structs/unions are transparent to member access""" |
| |
| import os, time |
| import unittest2 |
| import lldb |
| from lldbtest import * |
| import lldbutil |
| |
| class AnonymousTestCase(TestBase): |
| |
| mydir = TestBase.compute_mydir(__file__) |
| |
| @dsym_test |
| def test_expr_nest_with_dsym(self): |
| self.buildDsym() |
| self.expr_nest() |
| |
| @dsym_test |
| def test_expr_child_with_dsym(self): |
| self.buildDsym() |
| self.expr_child() |
| |
| @dsym_test |
| def test_expr_grandchild_with_dsym(self): |
| self.buildDsym() |
| self.expr_grandchild() |
| |
| @dsym_test |
| def test_expr_parent(self): |
| self.buildDsym() |
| self.expr_parent() |
| |
| @unittest2.expectedFailure # llvm.org/pr15591 |
| @dsym_test |
| def test_expr_null(self): |
| self.buildDsym() |
| self.expr_null() |
| |
| @dsym_test |
| def test_child_by_name(self): |
| self.buildDsym() |
| self.child_by_name() |
| |
| @skipIfGcc # llvm.org/pr15036: LLDB generates an incorrect AST layout for an anonymous struct when DWARF is generated by GCC |
| @skipIfIcc # llvm.org/pr15036: LLDB generates an incorrect AST layout for an anonymous struct when DWARF is generated by ICC |
| @dwarf_test |
| def test_expr_nest_with_dwarf(self): |
| self.buildDwarf() |
| self.expr_nest() |
| |
| @dwarf_test |
| def test_expr_child_with_dwarf(self): |
| self.skipTest("Skipped because LLDB asserts due to an incorrect AST layout for an anonymous struct: see llvm.org/pr15036") |
| self.buildDwarf() |
| self.expr_child() |
| |
| @skipIfGcc # llvm.org/pr15036: This particular regression was introduced by r181498 |
| @skipIfIcc # llvm.org/pr15036: This particular regression was introduced by r181498 |
| @dwarf_test |
| def test_expr_grandchild_with_dwarf(self): |
| self.buildDwarf() |
| self.expr_grandchild() |
| |
| @dwarf_test |
| def test_expr_parent(self): |
| self.buildDwarf() |
| self.expr_parent() |
| |
| @unittest2.expectedFailure # llvm.org/pr15591 |
| @dwarf_test |
| def test_expr_null(self): |
| self.buildDwarf() |
| self.expr_null() |
| |
| @dwarf_test |
| def test_child_by_name_with_dwarf(self): |
| self.buildDwarf() |
| self.child_by_name() |
| |
| def setUp(self): |
| # Call super's setUp(). |
| TestBase.setUp(self) |
| # Find the line numbers to break in main.c. |
| self.line0 = line_number('main.c', '// Set breakpoint 0 here.') |
| self.line1 = line_number('main.c', '// Set breakpoint 1 here.') |
| self.line2 = line_number('main.c', '// Set breakpoint 2 here.') |
| |
| def common_setup(self, line): |
| exe = os.path.join(os.getcwd(), "a.out") |
| self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET) |
| |
| # Set breakpoints inside and outside methods that take pointers to the containing struct. |
| lldbutil.run_break_set_by_file_and_line (self, "main.c", line, num_expected_locations=1, loc_exact=True) |
| |
| self.runCmd("run", RUN_SUCCEEDED) |
| |
| # The stop reason of the thread should be breakpoint. |
| self.expect("thread list", STOPPED_DUE_TO_BREAKPOINT, |
| substrs = ['stopped', |
| 'stop reason = breakpoint']) |
| |
| # The breakpoint should have a hit count of 1. |
| self.expect("breakpoint list -f", BREAKPOINT_HIT_ONCE, |
| substrs = [' resolved, hit count = 1']) |
| |
| def expr_nest(self): |
| self.common_setup(self.line0) |
| |
| # These should display correctly. |
| self.expect("expression n->foo.d", VARIABLES_DISPLAYED_CORRECTLY, |
| substrs = ["= 4"]) |
| |
| self.expect("expression n->b", VARIABLES_DISPLAYED_CORRECTLY, |
| substrs = ["= 2"]) |
| |
| def expr_child(self): |
| self.common_setup(self.line1) |
| |
| # These should display correctly. |
| self.expect("expression c->foo.d", VARIABLES_DISPLAYED_CORRECTLY, |
| substrs = ["= 4"]) |
| |
| self.expect("expression c->grandchild.b", VARIABLES_DISPLAYED_CORRECTLY, |
| substrs = ["= 2"]) |
| |
| def expr_grandchild(self): |
| self.common_setup(self.line2) |
| |
| # These should display correctly. |
| self.expect("expression g.child.foo.d", VARIABLES_DISPLAYED_CORRECTLY, |
| substrs = ["= 4"]) |
| |
| self.expect("expression g.child.b", VARIABLES_DISPLAYED_CORRECTLY, |
| substrs = ["= 2"]) |
| |
| def expr_parent(self): |
| if "clang" in self.getCompiler() and "3.4" in self.getCompilerVersion(): |
| self.skipTest("llvm.org/pr16214 -- clang emits partial DWARF for structures referenced via typedef") |
| self.common_setup(self.line2) |
| |
| # These should display correctly. |
| self.expect("expression pz", VARIABLES_DISPLAYED_CORRECTLY, |
| substrs = ["(type_z *) $", " = 0x0000"]) |
| |
| self.expect("expression z.y", VARIABLES_DISPLAYED_CORRECTLY, |
| substrs = ["(type_y) $", "dummy = 2"]) |
| |
| def expr_null(self): |
| self.common_setup(self.line2) |
| |
| # This should fail because pz is 0, but it succeeds on OS/X. |
| # This fails on Linux with an upstream error "Couldn't dematerialize struct", as does "p *n" with "int *n = 0". |
| # Note that this can also trigger llvm.org/pr15036 when run interactively at the lldb command prompt. |
| self.expect("expression *(type_z *)pz", |
| substrs = ["Cannot access memory at address 0x0"], error = True) |
| |
| def child_by_name(self): |
| exe = os.path.join (os.getcwd(), "a.out") |
| target = self.dbg.CreateTarget(exe) |
| self.assertTrue(target, VALID_TARGET) |
| |
| break_in_main = target.BreakpointCreateBySourceRegex ('// Set breakpoint 2 here.', lldb.SBFileSpec("main.c")) |
| self.assertTrue(break_in_main, VALID_BREAKPOINT) |
| |
| process = target.LaunchSimple (None, None, self.get_process_working_directory()) |
| self.assertTrue (process, PROCESS_IS_VALID) |
| |
| threads = lldbutil.get_threads_stopped_at_breakpoint (process, break_in_main) |
| if len(threads) != 1: |
| self.fail ("Failed to stop at breakpoint in main.") |
| |
| thread = threads[0] |
| frame = thread.frames[0] |
| |
| if not frame.IsValid(): |
| self.fail ("Failed to get frame 0.") |
| |
| var_n = frame.FindVariable("n") |
| if not var_n.IsValid(): |
| self.fail ("Failed to get the variable 'n'") |
| |
| elem_a = var_n.GetChildMemberWithName("a") |
| if not elem_a.IsValid(): |
| self.fail ("Failed to get the element a in n") |
| |
| error = lldb.SBError() |
| value = elem_a.GetValueAsSigned(error, 1000) |
| if not error.Success() or value != 0: |
| self.fail ("failed to get the correct value for element a in n") |
| |
| if __name__ == '__main__': |
| import atexit |
| lldb.SBDebugger.Initialize() |
| atexit.register(lambda: lldb.SBDebugger.Terminate()) |
| unittest2.main() |
