| """Test that anonymous structs/unions are transparent to member access""" |
| |
| from __future__ import print_function |
| |
| |
| import os |
| import time |
| import lldb |
| from lldbsuite.test.decorators import * |
| from lldbsuite.test.lldbtest import * |
| from lldbsuite.test import lldbutil |
| |
| |
| class AnonymousTestCase(TestBase): |
| |
| mydir = TestBase.compute_mydir(__file__) |
| |
| @skipIf( |
| compiler="icc", |
| bugnumber="llvm.org/pr15036: LLDB generates an incorrect AST layout for an anonymous struct when DWARF is generated by ICC") |
| def test_expr_nest(self): |
| self.build() |
| 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 test_expr_child(self): |
| self.build() |
| 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"]) |
| |
| @skipIf( |
| compiler="icc", |
| bugnumber="llvm.org/pr15036: This particular regression was introduced by r181498") |
| def test_expr_grandchild(self): |
| self.build() |
| 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 test_expr_parent(self): |
| self.build() |
| 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"]) |
| |
| @expectedFailureAll(oslist=["windows"], bugnumber="llvm.org/pr21550") |
| def test_expr_null(self): |
| self.build() |
| 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", error=True) |
| |
| def test_child_by_name(self): |
| self.build() |
| |
| # Set debugger into synchronous mode |
| self.dbg.SetAsync(False) |
| |
| # Create a target |
| exe = self.getBuildArtifact("a.out") |
| target = self.dbg.CreateTarget(exe) |
| self.assertTrue(target, VALID_TARGET) |
| |
| break_in_main = target.BreakpointCreateBySourceRegex( |
| '// Set breakpoint 2 here.', lldb.SBFileSpec(self.source)) |
| 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") |
| |
| def test_nest_flat(self): |
| self.build() |
| self.common_setup(self.line2) |
| |
| # These should display correctly. |
| self.expect('frame variable n --flat', |
| substrs=['n.a = 0', |
| 'n.b = 2', |
| 'n.foo.c = 0', |
| 'n.foo.d = 4']) |
| |
| def setUp(self): |
| # Call super's setUp(). |
| TestBase.setUp(self) |
| # Find the line numbers to break in main.c. |
| self.source = 'main.c' |
| self.line0 = line_number(self.source, '// Set breakpoint 0 here.') |
| self.line1 = line_number(self.source, '// Set breakpoint 1 here.') |
| self.line2 = line_number(self.source, '// Set breakpoint 2 here.') |
| |
| def common_setup(self, line): |
| |
| # Set debugger into synchronous mode |
| self.dbg.SetAsync(False) |
| |
| # Create a target |
| exe = self.getBuildArtifact("a.out") |
| target = self.dbg.CreateTarget(exe) |
| self.assertTrue(target, VALID_TARGET) |
| |
| # Set breakpoints inside and outside methods that take pointers to the |
| # containing struct. |
| lldbutil.run_break_set_by_file_and_line( |
| self, self.source, line, num_expected_locations=1, loc_exact=True) |
| |
| # Now launch the process, and do not stop at entry point. |
| process = target.LaunchSimple( |
| None, None, self.get_process_working_directory()) |
| self.assertTrue(process, PROCESS_IS_VALID) |
| |
| # 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']) |
