The windows error is because the names are different, as you expected:

AssertionError: 'void sink(void)' != 'sink()'

You can probably update the test to look for a different name on Windows 
(though if I recall correctly, different versions of the DIA sdk provide 
different detail on the names, so that might not be robust either) or look for 
a substring in the full name.

I’ll look into the Linux error as well and let you know what I find.


From: v...@apple.com <v...@apple.com>
Sent: Monday, October 15, 2018 8:34 PM
To: Frédéric Riss <fr...@apple.com>
Cc: reviews+d50478+public+7e86b794a0909...@reviews.llvm.org; Adrian Prantl 
<apra...@apple.com>; paul.robin...@sony.com; jdevliegh...@apple.com; Jim Ingham 
<jing...@apple.com>; ztur...@google.com; Stella Stamenova 
<sti...@microsoft.com>; abidh....@gmail.com; teempe...@gmail.com; 
sgraen...@apple.com; mgr...@codeaurora.org; dblai...@gmail.com; 
lldb-commits@lists.llvm.org
Subject: Re: [PATCH] D50478: Add support for artificial tail call frames




On Oct 15, 2018, at 4:46 PM, Frédéric Riss 
<fr...@apple.com<mailto:fr...@apple.com>> wrote:




On Oct 15, 2018, at 4:40 PM, Vedant Kumar 
<v...@apple.com<mailto:v...@apple.com>> wrote:




On Oct 15, 2018, at 3:47 PM, Stella Stamenova via Phabricator 
<revi...@reviews.llvm.org<mailto:revi...@reviews.llvm.org>> wrote:

stella.stamenova added a comment.

In 
https://reviews.llvm.org/D50478#1262717<https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Freviews.llvm.org%2FD50478%231262717&data=02%7C01%7CSTILIS%40microsoft.com%7C9ce5a5c509814cfbe40c08d633183492%7C72f988bf86f141af91ab2d7cd011db47%7C1%7C0%7C636752576410558617&sdata=FAl5MxKngJHYaphvhHxwZmkM%2FYzOFNN%2F1tc%2B9tn%2B9a4%3D&reserved=0>,
 @vsk wrote:


In 
https://reviews.llvm.org/D50478#1262710<https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Freviews.llvm.org%2FD50478%231262710&data=02%7C01%7CSTILIS%40microsoft.com%7C9ce5a5c509814cfbe40c08d633183492%7C72f988bf86f141af91ab2d7cd011db47%7C1%7C0%7C636752576410558617&sdata=QxwDMhgyu1zOnJjSMtG2QzOmhwBtOiRGRKHuyU0gJoU%3D&reserved=0>,
 @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.

Thanks, done in r344581.

vedant



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<https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Freviews.llvm.org%2FD50478&data=02%7C01%7CSTILIS%40microsoft.com%7C9ce5a5c509814cfbe40c08d633183492%7C72f988bf86f141af91ab2d7cd011db47%7C1%7C0%7C636752576410558617&sdata=LikQhFyzQHlkQnx39JzJileqEWz4i9BLZe3nRmNeYSM%3D&reserved=0>

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