148 lines
5.5 KiB
Python
148 lines
5.5 KiB
Python
"""Test that anonymous structs/unions are transparent to member access"""
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from __future__ import print_function
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import os, time
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import lldb
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from lldbsuite.test.lldbtest import *
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import lldbsuite.test.lldbutil as lldbutil
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class AnonymousTestCase(TestBase):
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mydir = TestBase.compute_mydir(__file__)
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@skipIfIcc # llvm.org/pr15036: LLDB generates an incorrect AST layout for an anonymous struct when DWARF is generated by ICC
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def test_expr_nest(self):
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self.build()
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self.common_setup(self.line0)
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# These should display correctly.
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self.expect("expression n->foo.d", VARIABLES_DISPLAYED_CORRECTLY,
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substrs = ["= 4"])
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self.expect("expression n->b", VARIABLES_DISPLAYED_CORRECTLY,
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substrs = ["= 2"])
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def test_expr_child(self):
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self.build()
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self.common_setup(self.line1)
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# These should display correctly.
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self.expect("expression c->foo.d", VARIABLES_DISPLAYED_CORRECTLY,
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substrs = ["= 4"])
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self.expect("expression c->grandchild.b", VARIABLES_DISPLAYED_CORRECTLY,
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substrs = ["= 2"])
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@skipIfIcc # llvm.org/pr15036: This particular regression was introduced by r181498
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def test_expr_grandchild(self):
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self.build()
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self.common_setup(self.line2)
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# These should display correctly.
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self.expect("expression g.child.foo.d", VARIABLES_DISPLAYED_CORRECTLY,
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substrs = ["= 4"])
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self.expect("expression g.child.b", VARIABLES_DISPLAYED_CORRECTLY,
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substrs = ["= 2"])
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def test_expr_parent(self):
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self.build()
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if "clang" in self.getCompiler() and "3.4" in self.getCompilerVersion():
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self.skipTest("llvm.org/pr16214 -- clang emits partial DWARF for structures referenced via typedef")
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self.common_setup(self.line2)
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# These should display correctly.
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self.expect("expression pz", VARIABLES_DISPLAYED_CORRECTLY,
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substrs = ["(type_z *) $", " = 0x0000"])
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self.expect("expression z.y", VARIABLES_DISPLAYED_CORRECTLY,
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substrs = ["(type_y) $", "dummy = 2"])
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@expectedFailureWindows('llvm.org/pr21550')
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def test_expr_null(self):
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self.build()
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self.common_setup(self.line2)
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# This should fail because pz is 0, but it succeeds on OS/X.
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# This fails on Linux with an upstream error "Couldn't dematerialize struct", as does "p *n" with "int *n = 0".
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# Note that this can also trigger llvm.org/pr15036 when run interactively at the lldb command prompt.
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self.expect("expression *(type_z *)pz", error = True)
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def test_child_by_name(self):
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self.build()
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# Set debugger into synchronous mode
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self.dbg.SetAsync(False)
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# Create a target
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exe = os.path.join (os.getcwd(), "a.out")
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target = self.dbg.CreateTarget(exe)
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self.assertTrue(target, VALID_TARGET)
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break_in_main = target.BreakpointCreateBySourceRegex ('// Set breakpoint 2 here.', lldb.SBFileSpec(self.source))
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self.assertTrue(break_in_main, VALID_BREAKPOINT)
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process = target.LaunchSimple (None, None, self.get_process_working_directory())
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self.assertTrue (process, PROCESS_IS_VALID)
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threads = lldbutil.get_threads_stopped_at_breakpoint (process, break_in_main)
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if len(threads) != 1:
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self.fail ("Failed to stop at breakpoint in main.")
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thread = threads[0]
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frame = thread.frames[0]
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if not frame.IsValid():
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self.fail ("Failed to get frame 0.")
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var_n = frame.FindVariable("n")
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if not var_n.IsValid():
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self.fail ("Failed to get the variable 'n'")
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elem_a = var_n.GetChildMemberWithName("a")
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if not elem_a.IsValid():
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self.fail ("Failed to get the element a in n")
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error = lldb.SBError()
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value = elem_a.GetValueAsSigned(error, 1000)
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if not error.Success() or value != 0:
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self.fail ("failed to get the correct value for element a in n")
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def setUp(self):
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# Call super's setUp().
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TestBase.setUp(self)
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# Find the line numbers to break in main.c.
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self.source = 'main.c'
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self.line0 = line_number(self.source, '// Set breakpoint 0 here.')
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self.line1 = line_number(self.source, '// Set breakpoint 1 here.')
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self.line2 = line_number(self.source, '// Set breakpoint 2 here.')
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def common_setup(self, line):
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# Set debugger into synchronous mode
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self.dbg.SetAsync(False)
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# Create a target
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exe = os.path.join(os.getcwd(), "a.out")
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target = self.dbg.CreateTarget(exe)
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self.assertTrue(target, VALID_TARGET)
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# Set breakpoints inside and outside methods that take pointers to the containing struct.
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lldbutil.run_break_set_by_file_and_line (self, self.source, line, num_expected_locations=1, loc_exact=True)
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# Now launch the process, and do not stop at entry point.
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process = target.LaunchSimple (None, None, self.get_process_working_directory())
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self.assertTrue(process, PROCESS_IS_VALID)
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# The stop reason of the thread should be breakpoint.
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self.expect("thread list", STOPPED_DUE_TO_BREAKPOINT,
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substrs = ['stopped',
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'stop reason = breakpoint'])
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# The breakpoint should have a hit count of 1.
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self.expect("breakpoint list -f", BREAKPOINT_HIT_ONCE,
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substrs = [' resolved, hit count = 1'])
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