a575e6e5ca
The tests were using the variable directly to get the dwarf version used for the test. That's only the overridden value, and won't be set if we're using the compiler default. I also put a comment by the variable to make sure people don't make the same mistake in the future.
343 lines
13 KiB
Python
343 lines
13 KiB
Python
"""
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Test the printing of anonymous and named namespace variables.
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"""
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import unittest
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import lldb
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from lldbsuite.test.decorators import *
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from lldbsuite.test.lldbtest import *
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from lldbsuite.test import lldbutil
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from lldbsuite.test import lldbplatformutil
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class NamespaceLookupTestCase(TestBase):
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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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# Break inside different scopes and evaluate value
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self.line_break_global_scope = line_number("ns.cpp", "// BP_global_scope")
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self.line_break_file_scope = line_number("ns2.cpp", "// BP_file_scope")
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self.line_break_ns_scope = line_number("ns2.cpp", "// BP_ns_scope")
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self.line_break_nested_ns_scope = line_number(
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"ns2.cpp", "// BP_nested_ns_scope"
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)
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self.line_break_nested_ns_scope_after_using = line_number(
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"ns2.cpp", "// BP_nested_ns_scope_after_using"
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)
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self.line_break_before_using_directive = line_number(
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"ns3.cpp", "// BP_before_using_directive"
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)
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self.line_break_after_using_directive = line_number(
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"ns3.cpp", "// BP_after_using_directive"
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)
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def runToBkpt(self, command):
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self.runCmd(command, RUN_SUCCEEDED)
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# The stop reason of the thread should be breakpoint.
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self.expect(
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"thread list",
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STOPPED_DUE_TO_BREAKPOINT,
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substrs=["stopped", "stop reason = breakpoint"],
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)
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@skipIfWindows # This is flakey on Windows: llvm.org/pr38373
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@unittest.expectedFailure # CU-local objects incorrectly scoped
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def test_scope_lookup_with_run_command_globals(self):
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"""Test scope lookup of functions in lldb."""
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self.build()
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lldbutil.run_to_source_breakpoint(
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self, self.line_break_global_scope, lldb.SBFileSpec("ns.cpp")
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)
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lldbutil.run_break_set_by_file_and_line(
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self,
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"ns3.cpp",
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self.line_break_before_using_directive,
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num_expected_locations=1,
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loc_exact=False,
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)
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lldbutil.run_break_set_by_file_and_line(
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self,
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"ns3.cpp",
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self.line_break_after_using_directive,
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num_expected_locations=1,
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loc_exact=False,
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)
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# Run to BP_global_scope at file scope
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self.runToBkpt("run")
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# FIXME: LLDB does not correctly scope CU-local objects.
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# LLDB currently lumps functions from all files into
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# a single AST and depending on the order with which
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# functions are considered, LLDB can incorrectly call
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# the static local ns.cpp::func() instead of the expected
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# ::func()
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# Evaluate func() - should call ::func()
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self.expect_expr("func()", expect_type="int", expect_value="1")
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# Evaluate ::func() - should call A::func()
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self.expect_expr("::func()", result_type="int", result_value="1")
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# Continue to BP_before_using_directive at file scope
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self.runToBkpt("continue")
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# Evaluate func() - should call ::func()
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self.expect_expr("func()", result_type="int", result_value="1")
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# Evaluate ::func() - should call ::func()
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self.expect_expr("::func()", result_type="int", result_value="1")
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# Continue to BP_after_using_directive at file scope
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self.runToBkpt("continue")
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# Evaluate ::func() - should call ::func()
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self.expect_expr("::func()", result_type="int", result_value="1")
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@skipIfWindows # This is flakey on Windows: llvm.org/pr38373
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def test_scope_lookup_with_run_command(self):
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"""Test scope lookup of functions in lldb."""
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self.build()
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self.runCmd("file " + self.getBuildArtifact("a.out"), CURRENT_EXECUTABLE_SET)
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lldbutil.run_break_set_by_file_and_line(
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self,
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"ns.cpp",
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self.line_break_global_scope,
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num_expected_locations=1,
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loc_exact=False,
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)
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lldbutil.run_break_set_by_file_and_line(
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self,
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"ns2.cpp",
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self.line_break_ns_scope,
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num_expected_locations=1,
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loc_exact=False,
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)
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lldbutil.run_break_set_by_file_and_line(
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self,
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"ns2.cpp",
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self.line_break_nested_ns_scope,
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num_expected_locations=1,
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loc_exact=False,
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)
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lldbutil.run_break_set_by_file_and_line(
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self,
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"ns2.cpp",
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self.line_break_nested_ns_scope_after_using,
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num_expected_locations=1,
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loc_exact=False,
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)
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lldbutil.run_break_set_by_file_and_line(
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self,
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"ns2.cpp",
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self.line_break_file_scope,
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num_expected_locations=1,
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loc_exact=False,
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)
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lldbutil.run_break_set_by_file_and_line(
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self,
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"ns3.cpp",
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self.line_break_before_using_directive,
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num_expected_locations=1,
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loc_exact=False,
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)
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lldbutil.run_break_set_by_file_and_line(
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self,
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"ns3.cpp",
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self.line_break_after_using_directive,
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num_expected_locations=1,
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loc_exact=False,
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)
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# Run to BP_global_scope at global scope
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self.runToBkpt("run")
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# Evaluate A::B::func() - should call A::B::func()
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self.expect_expr("A::B::func()", result_type="int", result_value="4")
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# Evaluate func(10) - should call ::func(int)
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self.expect_expr("func(10)", result_type="int", result_value="11")
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# Evaluate A::foo() - should call A::foo()
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self.expect_expr("A::foo()", result_type="int", result_value="42")
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# Continue to BP_file_scope at file scope
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self.runToBkpt("continue")
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# FIXME: In DWARF 5 with dsyms, the ordering of functions is slightly
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# different, which also hits the same issues mentioned previously.
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if (
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int(lldbplatformutil.getDwarfVersion()) <= 4
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or self.getDebugInfo() == "dwarf"
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):
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self.expect_expr("func()", result_type="int", result_value="2")
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# Continue to BP_ns_scope at ns scope
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self.runToBkpt("continue")
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# Evaluate func(10) - should call A::func(int)
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self.expect_expr("func(10)", result_type="int", result_value="13")
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# Evaluate B::func() - should call B::func()
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self.expect_expr("B::func()", result_type="int", result_value="4")
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# Evaluate func() - should call A::func()
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self.expect_expr("func()", result_type="int", result_value="3")
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# Continue to BP_nested_ns_scope at nested ns scope
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self.runToBkpt("continue")
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# Evaluate func() - should call A::B::func()
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self.expect_expr("func()", result_type="int", result_value="4")
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# Evaluate A::func() - should call A::func()
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self.expect_expr("A::func()", result_type="int", result_value="3")
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# Evaluate func(10) - should call A::func(10)
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# NOTE: Under the rules of C++, this test would normally get an error
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# because A::B::func() hides A::func(), but lldb intentionally
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# disobeys these rules so that the intended overload can be found
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# by only removing duplicates if they have the same type.
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self.expect_expr("func(10)", result_type="int", result_value="13")
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# Continue to BP_nested_ns_scope_after_using at nested ns scope after
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# using declaration
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self.runToBkpt("continue")
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# Evaluate A::func(10) - should call A::func(int)
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self.expect_expr("A::func(10)", result_type="int", result_value="13")
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# Continue to BP_before_using_directive at global scope before using
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# declaration
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self.runToBkpt("continue")
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# Evaluate B::func() - should call B::func()
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self.expect_expr("B::func()", result_type="int", result_value="4")
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# Continue to BP_after_using_directive at global scope after using
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# declaration
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self.runToBkpt("continue")
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# Evaluate B::func() - should call B::func()
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self.expect_expr("B::func()", result_type="int", result_value="4")
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@unittest.expectedFailure # lldb scope lookup of functions bugs
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def test_function_scope_lookup_with_run_command(self):
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"""Test scope lookup of functions in lldb."""
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self.build()
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self.runCmd("file " + self.getBuildArtifact("a.out"), CURRENT_EXECUTABLE_SET)
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lldbutil.run_break_set_by_file_and_line(
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self,
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"ns.cpp",
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self.line_break_global_scope,
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num_expected_locations=1,
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loc_exact=False,
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)
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lldbutil.run_break_set_by_file_and_line(
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self,
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"ns2.cpp",
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self.line_break_ns_scope,
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num_expected_locations=1,
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loc_exact=False,
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)
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# Run to BP_global_scope at global scope
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self.runToBkpt("run")
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# Evaluate foo() - should call ::foo()
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# FIXME: lldb finds Y::foo because lookup for variables is done
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# before functions.
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self.expect_expr("foo()", result_type="int", result_value="42")
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# Evaluate ::foo() - should call ::foo()
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# FIXME: lldb finds Y::foo because lookup for variables is done
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# before functions and :: is ignored.
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self.expect_expr("::foo()", result_type="int", result_value="42")
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# Continue to BP_ns_scope at ns scope
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self.runToBkpt("continue")
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# Evaluate foo() - should call A::foo()
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# FIXME: lldb finds Y::foo because lookup for variables is done
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# before functions.
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self.expect_expr("foo()", result_type="int", result_value="42")
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# NOTE: this test may fail on older systems that don't emit import
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# entries in DWARF - may need to add checks for compiler versions here.
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@skipIf(compiler="gcc", oslist=["linux"], debug_info=["dwo"]) # Skip to avoid crash
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def test_scope_after_using_directive_lookup_with_run_command(self):
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"""Test scope lookup after using directive in lldb."""
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self.build()
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self.runCmd("file " + self.getBuildArtifact("a.out"), CURRENT_EXECUTABLE_SET)
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lldbutil.run_break_set_by_file_and_line(
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self,
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"ns3.cpp",
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self.line_break_after_using_directive,
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num_expected_locations=1,
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loc_exact=False,
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)
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# Run to BP_after_using_directive at global scope after using
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# declaration
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self.runToBkpt("run")
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# Evaluate func2() - should call A::func2()
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self.expect_expr("func2()", result_type="int", result_value="3")
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@unittest.expectedFailure # lldb scope lookup after using declaration bugs
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# NOTE: this test may fail on older systems that don't emit import
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# emtries in DWARF - may need to add checks for compiler versions here.
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def test_scope_after_using_declaration_lookup_with_run_command(self):
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"""Test scope lookup after using declaration in lldb."""
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self.build()
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self.runCmd("file " + self.getBuildArtifact("a.out"), CURRENT_EXECUTABLE_SET)
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lldbutil.run_break_set_by_file_and_line(
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self,
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"ns2.cpp",
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self.line_break_nested_ns_scope_after_using,
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num_expected_locations=1,
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loc_exact=False,
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)
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# Run to BP_nested_ns_scope_after_using at nested ns scope after using
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# declaration
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self.runToBkpt("run")
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# Evaluate func() - should call A::func()
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self.expect_expr("func()", result_type="int", result_value="3")
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@unittest.expectedFailure # lldb scope lookup ambiguity after using bugs
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def test_scope_ambiguity_after_using_lookup_with_run_command(self):
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"""Test scope lookup ambiguity after using in lldb."""
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self.build()
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self.runCmd("file " + self.getBuildArtifact("a.out"), CURRENT_EXECUTABLE_SET)
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lldbutil.run_break_set_by_file_and_line(
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self,
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"ns3.cpp",
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self.line_break_after_using_directive,
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num_expected_locations=1,
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loc_exact=False,
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)
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# Run to BP_after_using_directive at global scope after using
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# declaration
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self.runToBkpt("run")
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# Evaluate func() - should get error: ambiguous
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# FIXME: This test fails because lldb removes duplicates if they have
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# the same type.
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self.expect("expr -- func()", startstr="error")
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def test_scope_lookup_shadowed_by_using_with_run_command(self):
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"""Test scope lookup shadowed by using in lldb."""
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self.build()
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self.runCmd("file " + self.getBuildArtifact("a.out"), CURRENT_EXECUTABLE_SET)
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lldbutil.run_break_set_by_file_and_line(
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self,
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"ns2.cpp",
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self.line_break_nested_ns_scope,
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num_expected_locations=1,
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loc_exact=False,
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)
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# Run to BP_nested_ns_scope at nested ns scope
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self.runToBkpt("run")
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# Evaluate func(10) - should call A::func(10)
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# NOTE: Under the rules of C++, this test would normally get an error
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# because A::B::func() shadows A::func(), but lldb intentionally
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# disobeys these rules so that the intended overload can be found
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# by only removing duplicates if they have the same type.
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self.expect_expr("func(10)", result_type="int", result_value="13")
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