155 lines
5.3 KiB
Python
155 lines
5.3 KiB
Python
"""Test that anonymous structs/unions are transparent to member access"""
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import os, time
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import unittest2
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import lldb
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from lldbtest import *
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import lldbutil
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class AnonymousTestCase(TestBase):
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mydir = os.path.join("lang", "c", "anonymous")
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@dsym_test
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def test_expr_nest_with_dsym(self):
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self.buildDsym()
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self.expr_nest()
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@dsym_test
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def test_expr_child_with_dsym(self):
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self.buildDsym()
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self.expr_child()
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@dsym_test
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def test_expr_grandchild_with_dsym(self):
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self.buildDsym()
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self.expr_grandchild()
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@dsym_test
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def test_expr_parent(self):
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self.buildDsym()
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self.expr_parent()
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@unittest2.expectedFailure # llvm.org/pr15591
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@dsym_test
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def test_expr_null(self):
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self.buildDsym()
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self.expr_null()
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@skipIfGcc # llvm.org/pr15036: LLDB generates an incorrect AST layout for an anonymous struct when DWARF is generated by GCC
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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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@dwarf_test
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def test_expr_nest_with_dwarf(self):
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self.buildDwarf()
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self.expr_nest()
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@dwarf_test
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def test_expr_child_with_dwarf(self):
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self.skipTest("Skipped because LLDB asserts due to an incorrect AST layout for an anonymous struct: see llvm.org/pr15036")
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self.buildDwarf()
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self.expr_child()
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@skipIfGcc # llvm.org/pr15036: This particular regression was introduced by r181498
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@skipIfIcc # llvm.org/pr15036: This particular regression was introduced by r181498
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@dwarf_test
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def test_expr_grandchild_with_dwarf(self):
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self.buildDwarf()
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self.expr_grandchild()
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@dwarf_test
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def test_expr_parent(self):
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self.buildDwarf()
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self.expr_parent()
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@unittest2.expectedFailure # llvm.org/pr15591
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@dwarf_test
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def test_expr_null(self):
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self.buildDwarf()
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self.expr_null()
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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.line0 = line_number('main.c', '// Set breakpoint 0 here.')
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self.line1 = line_number('main.c', '// Set breakpoint 1 here.')
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self.line2 = line_number('main.c', '// Set breakpoint 2 here.')
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def common_setup(self, line):
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exe = os.path.join(os.getcwd(), "a.out")
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self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET)
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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, "main.c", line, num_expected_locations=1, loc_exact=True)
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self.runCmd("run", RUN_SUCCEEDED)
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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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def expr_nest(self):
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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 expr_child(self):
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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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def expr_grandchild(self):
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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 expr_parent(self):
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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 *) $0 = 0x0000"])
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self.expect("expression z.y", VARIABLES_DISPLAYED_CORRECTLY,
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substrs = ["(type_y) $1 = {"])
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self.expect("expression z", VARIABLES_DISPLAYED_CORRECTLY,
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substrs = ["dummy = 2"])
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def expr_null(self):
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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",
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substrs = ["Cannot access memory at address 0x0"], error = True)
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if __name__ == '__main__':
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import atexit
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lldb.SBDebugger.Initialize()
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atexit.register(lambda: lldb.SBDebugger.Terminate())
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unittest2.main()
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