c8fd130a2c
Currently most of the test files have a separate dwarf and a separate dsym test with almost identical content (only the build step is different). With adding dwo symbol file handling to the test suit it would increase this to a 3-way duplication. The purpose of this change is to eliminate this redundancy with generating 2 test case (one dwarf and one dsym) for each test function specified (dwo handling will be added at a later commit). Main design goals: * There should be no boilerplate code in each test file to support the multiple debug info in most of the tests (custom scenarios are acceptable in special cases) so adding a new test case is easier and we can't miss one of the debug info type. * In case of a test failure, the debug symbols used during the test run have to be cleanly visible from the output of dotest.py to make debugging easier both from build bot logs and from local test runs * Each test case should have a unique, fully qualified name so we can run exactly 1 test with "-f <test-case>.<test-function>" syntax * Test output should be grouped based on test files the same way as it happens now (displaying dwarf/dsym results separately isn't preferable) Proposed solution (main logic in lldbtest.py, rest of them are test cases fixed up for the new style): * Have only 1 test fuction in the test files what will run for all debug info separately and this test function should call just "self.build(...)" to build an inferior with the right debug info * When a class is created by python (the class object, not the class instance), we will generate a new test method for each debug info format in the test class with the name "<test-function>_<debug-info>" and remove the original test method. This way unittest2 see multiple test methods (1 for each debug info, pretty much as of now) and will handle the test selection and the failure reporting correctly (the debug info will be visible from the end of the test name) * Add new annotation @no_debug_info_test to disable the generation of multiple tests for each debug info format when the test don't have an inferior Differential revision: http://reviews.llvm.org/D13028 llvm-svn: 248883
111 lines
4.5 KiB
Python
111 lines
4.5 KiB
Python
"""
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Test that ASan memory history provider returns correct stack traces
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"""
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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 AsanTestCase(TestBase):
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mydir = TestBase.compute_mydir(__file__)
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# The default compiler ("clang") may not support Address Sanitizer or it
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# may not have the debugging API which was recently added, so we're calling
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# self.useBuiltClang() to use clang from the llvm-build directory instead
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@expectedFailureLinux # non-core functionality, need to reenable and fix later (DES 2014.11.07)
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@skipIfFreeBSD # llvm.org/pr21136 runtimes not yet available by default
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@skipIfRemote
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@skipUnlessCompilerRt
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def test (self):
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compiler = self.findBuiltClang ()
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self.build (None, compiler)
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self.asan_tests ()
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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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self.line_malloc = line_number('main.c', '// malloc line')
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self.line_malloc2 = line_number('main.c', '// malloc2 line')
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self.line_free = line_number('main.c', '// free line')
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self.line_breakpoint = line_number('main.c', '// break line')
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def asan_tests (self):
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exe = os.path.join (os.getcwd(), "a.out")
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self.expect("file " + exe, patterns = [ "Current executable set to .*a.out" ])
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self.runCmd("breakpoint set -f main.c -l %d" % self.line_breakpoint)
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# "memory history" command should not work without a process
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self.expect("memory history 0",
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error = True,
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substrs = ["invalid process"])
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self.runCmd("run")
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# ASan will relaunch the process to insert its library.
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self.expect("thread list", "Process should be stopped due to exec.",
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substrs = ['stopped', 'stop reason = exec'])
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self.runCmd("continue")
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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', 'stop reason = breakpoint'])
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# test that the ASan dylib is present
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self.expect("image lookup -n __asan_describe_address", "__asan_describe_address should be present",
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substrs = ['1 match found'])
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# test the 'memory history' command
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self.expect("memory history 'pointer'",
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substrs = [
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'Memory allocated at', 'a.out`f1', 'main.c:%d' % self.line_malloc,
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'Memory deallocated at', 'a.out`f2', 'main.c:%d' % self.line_free])
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# do the same using SB API
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process = self.dbg.GetSelectedTarget().process
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val = process.GetSelectedThread().GetSelectedFrame().EvaluateExpression("pointer")
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addr = val.GetValueAsUnsigned()
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threads = process.GetHistoryThreads(addr);
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self.assertEqual(threads.GetSize(), 2)
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history_thread = threads.GetThreadAtIndex(0)
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self.assertTrue(history_thread.num_frames >= 2)
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self.assertEqual(history_thread.frames[1].GetLineEntry().GetFileSpec().GetFilename(), "main.c")
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self.assertEqual(history_thread.frames[1].GetLineEntry().GetLine(), self.line_free)
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history_thread = threads.GetThreadAtIndex(1)
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self.assertTrue(history_thread.num_frames >= 2)
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self.assertEqual(history_thread.frames[1].GetLineEntry().GetFileSpec().GetFilename(), "main.c")
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self.assertEqual(history_thread.frames[1].GetLineEntry().GetLine(), self.line_malloc)
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# let's free the container (SBThreadCollection) and see if the SBThreads still live
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threads = None
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self.assertTrue(history_thread.num_frames >= 2)
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self.assertEqual(history_thread.frames[1].GetLineEntry().GetFileSpec().GetFilename(), "main.c")
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self.assertEqual(history_thread.frames[1].GetLineEntry().GetLine(), self.line_malloc)
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# now let's break when an ASan report occurs and try the API then
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self.runCmd("breakpoint set -n __asan_report_error")
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self.runCmd("continue")
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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', 'stop reason = breakpoint'])
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# make sure the 'memory history' command still works even when we're generating a report now
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self.expect("memory history 'another_pointer'",
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substrs = [
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'Memory allocated at', 'a.out`f1', 'main.c:%d' % self.line_malloc2])
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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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