[New-bugs-announce] [issue13699] test_gdb has recently started failing

[Vinay Sajip]

New submission from Vinay Sajip <vinay_sajip at yahoo.co.uk>:

test_gdb has started failing recently on my Ubuntu Natty system:

vinay at eta-natty:~/tools/cpython$ ./python Lib/test/regrtest.py -v test_gdb
== CPython 3.3.0a0 (default:3ed5a6030c9b, Jan 2 2012, 23:04:11) [GCC 4.5.2]
==   Linux-2.6.38-13-generic-i686-with-debian-squeeze-sid little-endian
==   /home/vinay/tools/cpython/build/test_python_14449
Testing with flags: sys.flags(debug=0, inspect=0, interactive=0, optimize=0, dont_write_bytecode=0, no_user_site=0, no_site=0, ignore_environment=0, verbose=0, bytes_warning=0, quiet=0)
[1/1] test_gdb

[successful tests snipped]

======================================================================
FAIL: test_print_after_up (test.test_gdb.PyPrintTests)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/home/vinay/tools/cpython/Lib/test/test_gdb.py", line 670, in test_print_after_up
    r".*\nlocal 'c' = 3\nlocal 'b' = 2\nlocal 'a' = 1\n.*")
  File "/home/vinay/tools/cpython/Lib/test/test_gdb.py", line 171, in assertMultilineMatches
    self.fail(msg='%r did not match %r' % (actual, pattern))
AssertionError: 'Breakpoint 1 at 0x80ad5c6: file Python/bltinmodule.c, line 951.\n[Thread debugging using libthread_db enabled]\n\nBreakpoint 1, builtin_id (self=<module at remote 0xb7dd012c>, v=42) at Python/bltinmodule.c:951\n951\t    return PyLong_FromVoidPtr(v);\n#6 (unable to read python frame information)\nUnable to read information on python frame\nUnable to read information on python frame\nUnable to read information on python frame\n' did not match ".*\\nlocal 'c' = 3\\nlocal 'b' = 2\\nlocal 'a' = 1\\n.*"

======================================================================
FAIL: test_locals_after_up (test.test_gdb.PyLocalsTests)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/home/vinay/tools/cpython/Lib/test/test_gdb.py", line 702, in test_locals_after_up
    r".*\na = 1\nb = 2\nc = 3\n.*")
  File "/home/vinay/tools/cpython/Lib/test/test_gdb.py", line 171, in assertMultilineMatches
    self.fail(msg='%r did not match %r' % (actual, pattern))
AssertionError: 'Breakpoint 1 at 0x80ad5c6: file Python/bltinmodule.c, line 951.\n[Thread debugging using libthread_db enabled]\n\nBreakpoint 1, builtin_id (self=<module at remote 0xb7dd012c>, v=42) at Python/bltinmodule.c:951\n951\t    return PyLong_FromVoidPtr(v);\n#6 (unable to read python frame information)\nUnable to read information on python frame\n' did not match '.*\\na = 1\\nb = 2\\nc = 3\\n.*'

----------------------------------------------------------------------
Ran 42 tests in 13.809s

FAILED (failures=2, skipped=11)
test test_gdb failed
1 test failed:
    test_gdb

vinay at eta-natty:~/tools/cpython$ ./python
Python 3.3.0a0 (default:3ed5a6030c9b, Jan  2 2012, 23:04:11) 
[GCC 4.5.2] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import sysconfig
>>> sysconfig.get_config_vars()['PY_CFLAGS']
'-Wno-unused-result -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes'
>>> 

vinay at eta-natty:~/tools/cpython$ gdb --version
GNU gdb (Ubuntu/Linaro 7.2-1ubuntu11) 7.2
Copyright (C) 2010 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
and "show warranty" for details.
This GDB was configured as "i686-linux-gnu".
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.

vinay at eta-natty:~/tools/cpython$ gcc --version
gcc (Ubuntu/Linaro 4.5.2-8ubuntu4) 4.5.2
Copyright (C) 2010 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

vinay at eta-natty:~/tools/cpython$ uname -a
Linux eta-natty 2.6.38-13-generic #53-Ubuntu SMP Mon Nov 28 19:23:39 UTC 2011 i686 i686 i386 GNU/Linux

Marking haypo as nosy since it might be related to recent changes for #13628.

In earlier tests (conducted on 12 Dec, before the #13628 fix was checked in) test_gdb did not fail on the same system.

----------
components: Library (Lib)
messages: 150484
nosy: haypo, vinay.sajip
priority: normal
severity: normal
status: open
title: test_gdb has recently started failing
type: behavior
versions: Python 3.3

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue13699>
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