> On Oct 15, 2018, at 4:40 PM, Vedant Kumar <v...@apple.com> wrote:
> 
> 
> 
>> On Oct 15, 2018, at 3:47 PM, Stella Stamenova via Phabricator 
>> <revi...@reviews.llvm.org> wrote:
>> 
>> stella.stamenova added a comment.
>> 
>> In https://reviews.llvm.org/D50478#1262717, @vsk wrote:
>> 
>>> In https://reviews.llvm.org/D50478#1262710, @stella.stamenova wrote:
>>> 
>>>> Unfortunately, the bots are broken because of the FileCheck issue, so I 
>>>> can't confirm with them, but I see a number of these tests fail in our 
>>>> local testing. Some fail on both Windows and Linux and some just fail on 
>>>> Linux. Here are the failing tests:
>>>> 
>>>> Linux:
>>>> lldb-Suite :: 
>>>> functionalities/tail_call_frames/disambiguate_call_site/TestDisambiguateCallSite.py
>>>> lldb-Suite :: 
>>>> functionalities/tail_call_frames/disambiguate_paths_to_common_sink/TestDisambiguatePathsToCommonSink.py
>>>> lldb-Suite :: 
>>>> functionalities/tail_call_frames/disambiguate_tail_call_seq/TestDisambiguateTailCallSeq.py
>>>> lldb-Suite :: 
>>>> functionalities/tail_call_frames/inlining_and_tail_calls/TestInliningAndTailCalls.py
>>>> lldb-Suite :: 
>>>> functionalities/tail_call_frames/sbapi_support/TestTailCallFrameSBAPI.py
>>>> lldb-Suite :: 
>>>> functionalities/tail_call_frames/thread_step_out_message/TestArtificialFrameStepOutMessage.py
>>>> lldb-Suite :: 
>>>> functionalities/tail_call_frames/unambiguous_sequence/TestUnambiguousTailCalls.py
>>>> 
>>>> Windows:
>>>> lldb-Suite :: 
>>>> functionalities/tail_call_frames/sbapi_support/TestTailCallFrameSBAPI.py
>>>> lldb-Suite :: 
>>>> functionalities/tail_call_frames/thread_step_out_or_return/TestSteppingOutWithArtificialFrames.py
>>>> 
>>>> 
>>>> Let me know what you need to investigate.
>>> 
>>> 
>>> Strange, I didn't get any bot failure notifications in the days after this 
>>> landed. Could you share the output from the failing tests?
>> 
>> 
>> All the failures on Windows are happening when validating the function name. 
>> For example:
>> 
>> ======================================================================
>> 
>> FAIL: test_tail_call_frame_sbapi 
>> (TestTailCallFrameSBAPI.TestTailCallFrameSBAPI)
>> 
>> ----------------------------------------------------------------------
>> 
>> Traceback (most recent call last):
>> 
>>   File 
>> "E:\_work\55\s\llvm\tools\lldb\packages\Python\lldbsuite\test\functionalities\tail_call_frames\sbapi_support\TestTailCallFrameSBAPI.py",
>>  line 19, in test_tail_call_frame_sbapi
>> 
>>     self.do_test()
>> 
>>   File 
>> "E:\_work\55\s\llvm\tools\lldb\packages\Python\lldbsuite\test\functionalities\tail_call_frames\sbapi_support\TestTailCallFrameSBAPI.py",
>>  line 64, in do_test
>> 
>>     self.assertTrue(frame.GetDisplayFunctionName() == name)
> 
> It could be that the display name of a function is formatted differently on 
> Windows. Do you have an easy way of determining what 
> frame.GetDisplayFunctionName() is?

If you use assertEqual(a,b) instead of assertTrue, it will print out the values 
and make it easier to debug.

Fred 

> 
>> 
>> AssertionError: False is not True
>> 
>> Config=x86_64-E:\_work\55\b\LLVMBuild\Release\bin\clang.exe
>> 
>> ----------------------------------------------------------------------
>> 
>> There are several different failures on Linux. Here's the first one:
>> 
>> FAIL: LLDB (/vstsdrive/_work/38/b/LLVMBuild/bin/clang-8-x86_64) :: 
>> test_dwarf (lldbsuite.test.lldbtest.TestDisambiguateCallSite)
>> 
>> --- FileCheck trace (code=1) ---
>> /vstsdrive/_work/38/b/LLVMBuild/bin/FileCheck 
>> /vstsdrive/_work/38/s/llvm/tools/lldb/packages/Python/lldbsuite/test/functionalities/tail_call_frames/disambiguate_call_site/main.cpp
>>  -implicit-check-not=artificial
>> 
>> FileCheck input:
>> * thread #1, name = 'a.out', stop reason = breakpoint 1.1
>>   * frame #0: 0x0000000000400580 a.out`sink() at main.cpp:13:4 [opt]
>>     frame #1: 0x00000000004005b8 a.out`main(argc=1, (null)=<unavailable>) at 
>> main.cpp:28:3 [opt]
>>     frame #2: 0x00007f980aff7830 libc.so.6`__libc_start_main + 240
>>     frame #3: 0x00000000004004a9 a.out`_start + 41
> 
> It looks like we're not generating tail call frames on Linux at all. It would 
> help to have logs from "log enable -f /tmp/linux-stepping.log lldb step".
> 
> I'm headed out of the office now, but If you need to disable the tests on 
> Windows/Linux , the fastest way to do that would be to add a platform check 
> to skipUnlessHasCallSiteInfo in decorators.py.
> 
> vedant
> 
> 
>> 
>> 
>> FileCheck output:
>> 
>> /vstsdrive/_work/38/s/llvm/tools/lldb/packages/Python/lldbsuite/test/functionalities/tail_call_frames/disambiguate_call_site/main.cpp:15:17:
>>  error: CHECK-NEXT: expected string not found in input
>>  // CHECK-NEXT: func2{{.*}} [opt] [artificial]
>>                 ^
>> <stdin>:3:2: note: scanning from here
>>  frame #1: 0x00000000004005b8 a.out`main(argc=1, (null)=<unavailable>) at 
>> main.cpp:28:3 [opt]
>>  ^
>> <stdin>:3:80: note: possible intended match here
>>  frame #1: 0x00000000004005b8 a.out`main(argc=1, (null)=<unavailable>) at 
>> main.cpp:28:3 [opt]
>>                                                                              
>>  ^
>> 
>> Let me know if you need more logs.
>> 
>> 
>> Repository:
>> rLLDB LLDB
>> 
>> https://reviews.llvm.org/D50478

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