[lldb-dev] lldb/test/API/commands/help/TestHelp.py not running just-built lldb

David Blaikie via lldb-dev lldb-dev at lists.llvm.org
Tue Jan 19 15:56:02 PST 2021 

On Linux (Ubuntu) + cmake + ninja, it seems this test isn't testing the
checked-out lldb, but instead running the system (or user-dir, in my case)
installed lldb (see examples at the end of this email)

If I remove the user-dir installed lldb then the test fails differently -
complaining that it can't find the lldb python bindings, it seems. So it's
not even falling back to the just-built lldb, by the looks of it.

Any ideas? Anyone else come across this? Should something in the testing be
setting PYTHONPATH to include (preferentially/early) the just-built python
lldb package?

- Dave


$ ./bin/llvm-lit -v tools/lldb/test/API/commands/help/TestHelp.py

-- Testing: 1 tests, 1 workers --

FAIL: lldb-api :: commands/help/TestHelp.py (1 of 1)

******************** TEST 'lldb-api :: commands/help/TestHelp.py' FAILED
********************

Script:

--

/usr/bin/python3
/usr/local/google/home/blaikie/dev/llvm/src/lldb/test/API/dotest.py -u
CXXFLAGS -u CFLAGS --env ARCHIVER=/usr/bin/ar --env
OBJCOPY=/usr/bin/objcopy --env
LLVM_LIBS_DIR=/usr/local/google/home/blaikie/dev/llvm/build/default/./lib
--arch x86_64 --build-dir
/usr/local/google/home/blaikie/dev/llvm/build/default/lldb-test-build.noindex
--lldb-module-cache-dir
/usr/local/google/home/blaikie/dev/llvm/build/default/lldb-test-build.noindex/module-cache-lldb/lldb-api
--clang-module-cache-dir
/usr/local/google/home/blaikie/dev/llvm/build/default/lldb-test-build.noindex/module-cache-clang/lldb-api
--executable
/usr/local/google/home/blaikie/dev/llvm/build/default/./bin/lldb --compiler
/usr/local/google/home/blaikie/dev/llvm/build/default/./bin/clang
--dsymutil
/usr/local/google/home/blaikie/dev/llvm/build/default/./bin/dsymutil
--filecheck
/usr/local/google/home/blaikie/dev/llvm/build/default/./bin/FileCheck
--yaml2obj
/usr/local/google/home/blaikie/dev/llvm/build/default/./bin/yaml2obj
--lldb-libs-dir /usr/local/google/home/blaikie/dev/llvm/build/default/./lib
/usr/local/google/home/blaikie/dev/llvm/src/lldb/test/API/commands/help -p
TestHelp.py

--

Exit Code: -11


Command Output (stdout):

--

lldb version 12.0.0 (git at github.com:llvm/llvm-project.git revision
d49974f9c98ebce5a679eced9f27add138b881fa)

  clang revision d49974f9c98ebce5a679eced9f27add138b881fa

  llvm revision d49974f9c98ebce5a679eced9f27add138b881fa


--

Command Output (stderr):

--

Fatal Python error: Segmentation fault


Current thread 0x00007fe870b7d740 (most recent call first):

  File
"/usr/local/google/home/blaikie/install/lib/python3/dist-packages/lldb/__init__.py",
line 3098 in HandleCommand

  File
"/usr/local/google/home/blaikie/dev/llvm/src/lldb/packages/Python/lldbsuite/test/lldbtest.py",
line 2146 in runCmd

  File
"/usr/local/google/home/blaikie/dev/llvm/src/lldb/test/API/commands/help/TestHelp.py",
line 62 in test_help_memory_read_should_not_crash_lldb

  File
"/usr/local/google/home/blaikie/dev/llvm/src/lldb/packages/Python/lldbsuite/test/decorators.py",
line 345 in wrapper

  File
"/usr/local/google/home/blaikie/dev/llvm/src/lldb/third_party/Python/module/unittest2/unittest2/case.py",
line 413 in runMethod

  File
"/usr/local/google/home/blaikie/dev/llvm/src/lldb/third_party/Python/module/unittest2/unittest2/case.py",
line 383 in run

  File
"/usr/local/google/home/blaikie/dev/llvm/src/lldb/third_party/Python/module/unittest2/unittest2/case.py",
line 458 in __call__

  File
"/usr/local/google/home/blaikie/dev/llvm/src/lldb/third_party/Python/module/unittest2/unittest2/suite.py",
line 117 in _wrapped_run

  File
"/usr/local/google/home/blaikie/dev/llvm/src/lldb/third_party/Python/module/unittest2/unittest2/suite.py",
line 115 in _wrapped_run

  File
"/usr/local/google/home/blaikie/dev/llvm/src/lldb/third_party/Python/module/unittest2/unittest2/suite.py",
line 85 in run

  File
"/usr/local/google/home/blaikie/dev/llvm/src/lldb/third_party/Python/module/unittest2/unittest2/suite.py",
line 66 in __call__

  File
"/usr/local/google/home/blaikie/dev/llvm/src/lldb/third_party/Python/module/unittest2/unittest2/runner.py",
line 165 in run

  File
"/usr/local/google/home/blaikie/dev/llvm/src/lldb/packages/Python/lldbsuite/test/dotest.py",
line 1008 in run_suite

  File
"/usr/local/google/home/blaikie/dev/llvm/src/lldb/test/API/dotest.py", line
7 in <module>


--


********************

********************

Failed Tests (1):

  lldb-api :: commands/help/TestHelp.py



Testing Time: 5.03s

  Failed: 1





$ ./bin/llvm-lit -v tools/lldb/test/API/commands/help/TestHelp.py

-- Testing: 1 tests, 1 workers --

FAIL: lldb-api :: commands/help/TestHelp.py (1 of 1)

******************** TEST 'lldb-api :: commands/help/TestHelp.py' FAILED
********************

Script:

--

/usr/bin/python3
/usr/local/google/home/blaikie/dev/llvm/src/lldb/test/API/dotest.py -u
CXXFLAGS -u CFLAGS --env ARCHIVER=/usr/bin/ar --env
OBJCOPY=/usr/bin/objcopy --env
LLVM_LIBS_DIR=/usr/local/google/home/blaikie/dev/llvm/build/default/./lib
--arch x86_64 --build-dir
/usr/local/google/home/blaikie/dev/llvm/build/default/lldb-test-build.noindex
--lldb-module-cache-dir
/usr/local/google/home/blaikie/dev/llvm/build/default/lldb-test-build.noindex/module-cache-lldb/lldb-api
--clang-module-cache-dir
/usr/local/google/home/blaikie/dev/llvm/build/default/lldb-test-build.noindex/module-cache-clang/lldb-api
--executable
/usr/local/google/home/blaikie/dev/llvm/build/default/./bin/lldb --compiler
/usr/local/google/home/blaikie/dev/llvm/build/default/./bin/clang
--dsymutil
/usr/local/google/home/blaikie/dev/llvm/build/default/./bin/dsymutil
--filecheck
/usr/local/google/home/blaikie/dev/llvm/build/default/./bin/FileCheck
--yaml2obj
/usr/local/google/home/blaikie/dev/llvm/build/default/./bin/yaml2obj
--lldb-libs-dir /usr/local/google/home/blaikie/dev/llvm/build/default/./lib
/usr/local/google/home/blaikie/dev/llvm/src/lldb/test/API/commands/help -p
TestHelp.py

--

Exit Code: 1


Command Output (stdout):

--

lldb version 12.0.0 (git at github.com:llvm/llvm-project.git revision
d49974f9c98ebce5a679eced9f27add138b881fa)

  clang revision d49974f9c98ebce5a679eced9f27add138b881fa

  llvm revision d49974f9c98ebce5a679eced9f27add138b881fa

Unable to load lldb extension module.  Possible reasons for this include:

  1) LLDB was built with LLDB_ENABLE_PYTHON=0

  2) PYTHONPATH and PYTHONHOME are not set correctly.  PYTHONHOME should
refer to

     the version of Python that LLDB built and linked against, and
PYTHONPATH

     should contain the Lib directory for the same python distro, as well
as the

     location of LLDB's site-packages folder.

  3) A different version of Python than that which was built against is
exported in

     the system's PATH environment variable, causing conflicts.

  4) The executable
'/usr/local/google/home/blaikie/dev/llvm/build/default/bin/lldb' could not
be found.  Please check

     that it exists and is executable.


--

Command Output (stderr):

--

Traceback (most recent call last):

  File
"/usr/local/google/home/blaikie/dev/llvm/src/lldb/test/API/dotest.py", line
7, in <module>

    lldbsuite.test.run_suite()

  File
"/usr/local/google/home/blaikie/dev/llvm/src/lldb/packages/Python/lldbsuite/test/dotest.py",
line 890, in run_suite

    import lldb

ModuleNotFoundError: No module named 'lldb'


--


********************

********************

Failed Tests (1):

  lldb-api :: commands/help/TestHelp.py



Testing Time: 0.29s

  Failed: 1
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