ece2c25ab9
I noticed a failure of [running LLDB test suites on Windows AArch64](https://lab.llvm.org/buildbot/#/builders/219/builds/9849). The failed test case is about checking output of command `breakpoint list -v -L c++`, and an mismatch on the demangled name of a function occurred. The test case expects `ns::func(void)`, but on Windows it is `int ns::func(void)`. It results from the different mangling scheme used by MSVC, and the comparison is as follows: | Scheme | Mangled | Demangled (fully) | Note | | --- | --- | --- | --- | | MSVC | `?func@ns@@YAHXZ` | `int __cdecl ns::func(void)` | [Godbolt](https://godbolt.org/z/5ns8c7xW3) (I have no available Windows device) | | Itanium | `_ZN2ns4funcEv` | `ns::func()` | | According to the current use of MSVC demangling,8f68022f8e/lldb/source/Core/Mangled.cpp (L128-L143)the `__cdecl` specifier is not part of the name. However, the function's parameter types should be present as ` llvm::MSDF_NoVariableType` [does not affect a symbol for functions](8f68022f8e/llvm/lib/Demangle/MicrosoftDemangleNodes.cpp (L417-L453)). Therefore, it is inappropriate to assume the demangled name are the same on all platforms. Instead of tweaking the existing code of demangling to get the same (demangled) name, I think it is more reasonable to modify the test case.
138 lines
4.3 KiB
Python
138 lines
4.3 KiB
Python
"""
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Test breakpoint command for different options.
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"""
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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 BreakpointOptionsTestCase(TestBase):
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def test(self):
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"""Test breakpoint command for different options."""
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self.build()
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self.breakpoint_options_test()
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self.breakpoint_options_language_test()
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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 number to break inside main().
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self.line = line_number("main.cpp", "// Set break point at this line.")
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def breakpoint_options_test(self):
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"""Test breakpoint command for different options."""
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exe = self.getBuildArtifact("a.out")
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self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET)
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# This should create a breakpoint with 1 locations.
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lldbutil.run_break_set_by_file_and_line(
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self, "main.cpp", self.line, extra_options="-K 1", num_expected_locations=1
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)
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lldbutil.run_break_set_by_file_and_line(
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self, "main.cpp", self.line, extra_options="-K 0", num_expected_locations=1
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)
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# Run the program.
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self.runCmd("run", RUN_SUCCEEDED)
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# Stopped once.
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self.expect(
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"thread backtrace",
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STOPPED_DUE_TO_BREAKPOINT,
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substrs=["stop reason = breakpoint 2."],
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)
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# Check the list of breakpoint.
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self.expect(
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"breakpoint list -f",
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"Breakpoint locations shown correctly",
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substrs=[
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"1: file = 'main.cpp', line = %d, exact_match = 0, locations = 1"
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% self.line,
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"2: file = 'main.cpp', line = %d, exact_match = 0, locations = 1"
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% self.line,
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],
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)
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# Continue the program, there should be another stop.
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self.runCmd("process continue")
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# Stopped again.
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self.expect(
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"thread backtrace",
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STOPPED_DUE_TO_BREAKPOINT,
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substrs=["stop reason = breakpoint 1."],
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)
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# Continue the program, we should exit.
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self.runCmd("process continue")
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# We should exit.
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self.expect(
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"process status",
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"Process exited successfully",
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patterns=["^Process [0-9]+ exited with status = 0"],
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)
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def breakpoint_options_language_test(self):
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"""Test breakpoint command for language option."""
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exe = self.getBuildArtifact("a.out")
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self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET)
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# This should create a breakpoint with 1 locations.
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bp_id = lldbutil.run_break_set_by_symbol(
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self,
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"ns::func",
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sym_exact=False,
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extra_options="-L c++",
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num_expected_locations=1,
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)
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location = self.target().FindBreakpointByID(bp_id).GetLocationAtIndex(0)
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function = location.GetAddress().GetFunction()
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self.expect(
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"breakpoint list -v",
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"Verbose breakpoint list contains mangled names",
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# The demangled function name is system-dependent, e.g.
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# 'int ns::func(void)' on Windows and 'ns::func()' on Linux.
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substrs=[
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f"function = {function.GetName()}",
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f"mangled function = {function.GetMangledName()}",
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],
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)
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# This should create a breakpoint with 0 locations.
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lldbutil.run_break_set_by_symbol(
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self,
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"ns::func",
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sym_exact=False,
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extra_options="-L c",
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num_expected_locations=0,
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)
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self.runCmd("settings set target.language c")
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lldbutil.run_break_set_by_symbol(
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self, "ns::func", sym_exact=False, num_expected_locations=0
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)
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# Run the program.
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self.runCmd("run", RUN_SUCCEEDED)
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# Stopped once.
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self.expect(
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"thread backtrace",
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STOPPED_DUE_TO_BREAKPOINT,
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substrs=["stop reason = breakpoint 1."],
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)
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# Continue the program, we should exit.
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self.runCmd("process continue")
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# We should exit.
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self.expect(
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"process status",
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"Process exited successfully",
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patterns=["^Process [0-9]+ exited with status = 0"],
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)
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