88ac9138f4
The test was checking that we can print an error message when a variable is optimized away, but the optimizer got smarter (D140404) in tracking the variable's value (so that we were not able to recover its value). Using a value in an argument registers (argc) makes it more likely to be overwritten by subsequent function calls (and permanently lost).
51 lines
1.9 KiB
Python
51 lines
1.9 KiB
Python
"""
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Test lldb-vscode variables/stackTrace request for optimized code
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"""
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import vscode
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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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import lldbvscode_testcase
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class TestVSCode_optimized(lldbvscode_testcase.VSCodeTestCaseBase):
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@skipIfWindows
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@skipIfRemote
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def test_stack_frame_name(self):
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''' Test optimized frame has special name suffix.
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'''
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program = self.getBuildArtifact("a.out")
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self.build_and_launch(program)
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source = 'main.cpp'
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breakpoint_line = line_number(source, '// breakpoint 1')
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lines = [breakpoint_line]
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breakpoint_ids = self.set_source_breakpoints(source, lines)
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self.assertEqual(len(breakpoint_ids), len(lines),
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"expect correct number of breakpoints")
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self.continue_to_breakpoints(breakpoint_ids)
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leaf_frame = self.vscode.get_stackFrame(frameIndex=0)
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self.assertTrue(leaf_frame['name'].endswith(' [opt]'))
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parent_frame = self.vscode.get_stackFrame(frameIndex=1)
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self.assertTrue(parent_frame['name'].endswith(' [opt]'))
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@skipIfWindows
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@skipIfRemote
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def test_optimized_variable(self):
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''' Test optimized variable value contains error.
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'''
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program = self.getBuildArtifact("a.out")
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self.build_and_launch(program)
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source = 'main.cpp'
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breakpoint_line = line_number(source, '// breakpoint 2')
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lines = [breakpoint_line]
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# Set breakpoint in the thread function so we can step the threads
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breakpoint_ids = self.set_source_breakpoints(source, lines)
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self.assertEqual(len(breakpoint_ids), len(lines),
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"expect correct number of breakpoints")
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self.continue_to_breakpoints(breakpoint_ids)
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optimized_variable = self.vscode.get_local_variable('argc')
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self.assertTrue(optimized_variable['value'].startswith('<error:'))
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