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https://github.com/Gericom/teak-llvm.git
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48ef8d4c37
This patch fixes two issues: 1) Popen needs to be used with universal_newlines=True by default. This elicits automatic decoding from bytes -> string in Py3, and has no negative effects in other Py versions. 2) The swig typemaps for converting between string and (char*, int) did not work correctly when the length of the string was 0, indicating an error. In this case we would try to construct a string from uninitialized data. 3) Ironically, the bug mentioned in #2 led to a test passing on Windows that was actually broken, because the test was written such that the assertion was never even getting checked, so it passed by default. So we additionally fix this test to also fail if the method errors. By fixing this test it's now broken on Windows, so we also xfail it. llvm-svn: 253487
91 lines
3.3 KiB
Python
91 lines
3.3 KiB
Python
"""
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Test C++ virtual function and virtual inheritance.
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"""
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from __future__ import print_function
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import os, time
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import re
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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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def Msg(expr, val):
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return "'expression %s' matches the output (from compiled code): %s" % (expr, val)
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class CppVirtualMadness(TestBase):
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mydir = TestBase.compute_mydir(__file__)
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# This is the pattern by design to match the "my_expr = 'value'" output from
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# printf() stmts (see main.cpp).
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pattern = re.compile("^([^=]*) = '([^=]*)'$")
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# Assert message.
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PRINTF_OUTPUT_GROKKED = "The printf output from compiled code is parsed correctly"
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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 for main.cpp.
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self.source = 'main.cpp'
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self.line = line_number(self.source, '// Set first breakpoint here.')
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@expectedFailureIcc('llvm.org/pr16808') # lldb does not call the correct virtual function with icc
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@expectedFailureAll(oslist=['windows'])
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def test_virtual_madness(self):
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"""Test that expression works correctly with virtual inheritance as well as virtual function."""
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self.build()
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# Bring the program to the point where we can issue a series of
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# 'expression' command to compare against the golden output.
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self.dbg.SetAsync(False)
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# Create a target by the debugger.
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target = self.dbg.CreateTarget("a.out")
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self.assertTrue(target, VALID_TARGET)
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# Create the breakpoint inside function 'main'.
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breakpoint = target.BreakpointCreateByLocation(self.source, self.line)
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self.assertTrue(breakpoint, VALID_BREAKPOINT)
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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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self.assertTrue(process.GetState() == lldb.eStateStopped)
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thread = lldbutil.get_stopped_thread(process, lldb.eStopReasonBreakpoint)
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self.assertTrue(thread.IsValid(), "There should be a thread stopped due to breakpoint condition")
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# First, capture the golden output from the program itself from the
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# series of printf statements.
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stdout = process.GetSTDOUT(1024)
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self.assertIsNotNone(stdout, "Encountered an error reading the process's output")
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# This golden list contains a list of "my_expr = 'value' pairs extracted
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# from the golden output.
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gl = []
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# Scan the golden output line by line, looking for the pattern:
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#
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# my_expr = 'value'
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#
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for line in stdout.split(os.linesep):
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match = self.pattern.search(line)
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if match:
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my_expr, val = match.group(1), match.group(2)
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gl.append((my_expr, val))
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#print("golden list:", gl)
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# Now iterate through the golden list, comparing against the output from
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# 'expression var'.
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for my_expr, val in gl:
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self.runCmd("expression %s" % my_expr)
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output = self.res.GetOutput()
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# The expression output must match the oracle.
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self.expect(output, Msg(my_expr, val), exe=False,
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substrs = [val])
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