[New-bugs-announce] [issue15037] test_curses fails with OverflowError

[John Bollinger]

New submission from John Bollinger <John.Bollinger at stJude.org>:

I encountered this test failure while attempting to verify a patch for a separate issue, and I found that it occurs with the unmodified source on the default branch:

LD_LIBRARY_PATH="$PWD" ./python -bb -Wd -m test -r -w -uall -v test_curses
== CPython 3.3.0a4+ (default:4aeb5b9b62d7, Jun 8 2012, 10:23:35) [GCC 4.4.6
20110731 (Red Hat 4.4.6-3)]
==   Linux-2.6.32-220.4.1.el6.x86_64-x86_64-with-centos-6.2-Final
little-endian
==   /home/jbolling/cpython/build/test_python_26873
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=2, quiet=0, hash_randomization=1)
Using random seed 3072318
[1/1] test_curses
test test_curses crashed -- Traceback (most recent call last):
  File "/home/jbolling/cpython/Lib/test/regrtest.py", line 1237, in
runtest_inner
    test_runner()
  File "/home/jbolling/cpython/Lib/test/test_curses.py", line 338, in
test_main
    main(stdscr)
  File "/home/jbolling/cpython/Lib/test/test_curses.py", line 324, in main
    test_unget_wch(stdscr)
  File "/home/jbolling/cpython/Lib/test/test_curses.py", line 283, in
test_unget_wch
    read = chr(read)
OverflowError: signed integer is greater than maximum

1 test failed:
    test_curses
Re-running failed tests in verbose mode
Re-running test 'test_curses' in verbose mode
test test_curses crashed -- Traceback (most recent call last):
  File "/home/jbolling/cpython/Lib/test/regrtest.py", line 1237, in
runtest_inner
    test_runner()
  File "/home/jbolling/cpython/Lib/test/test_curses.py", line 338, in
test_main
    main(stdscr)
  File "/home/jbolling/cpython/Lib/test/test_curses.py", line 324, in main
    test_unget_wch(stdscr)
  File "/home/jbolling/cpython/Lib/test/test_curses.py", line 283, in
test_unget_wch
    read = chr(read)
OverflowError: signed integer is greater than maximum

[123272 refs]


Python was built and the tests run on CentOS 6.2 / x86_64, using the platform's standard tool chain, configured with "--enable-shared --with-threads --with-pydebug".

All other tests pass for me, although test_builtin failed when run as part of the whole suite but passed when run by itself.


For what it's worth, it looks like that particular message is emitted in exactly one place: Python/getargs.c:661 (function convertsimple()), which in this case I guess is being called indirectly from Python/bltinmodule.c:526 (function builtin_chr()).  It's not obvious to me why that would be failing.

----------
components: Tests
messages: 162532
nosy: jcbollinger
priority: normal
severity: normal
status: open
title: test_curses fails with OverflowError
type: behavior
versions: Python 3.3

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue15037>
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