[issue8316] test_gdb is susceptible to tty width settings

Dave Malcolm report at bugs.python.org
Mon Apr 5 18:10:34 CEST 2010


New submission from Dave Malcolm <dmalcolm at redhat.com>:

test_gdb's get_gdb_repr carves up a gdb backtrace to try to extract how gdb representated the data.

When connected to a tty, gdb will insert additional newlines and spaces based on the width of the tty (internally it has a wrap_here() function to do this), so the test turned out to be somewhat susceptible to whitespace and tty configuration.

I'm attaching a patch against trunk which I believe fixes this.  I've tested it with various tty widths (from 5 columns wide through to 235 columns wide), and redirecting to a file, and all tests pass.

[Seen on buildbot on this run:
http://www.python.org/dev/buildbot/builders/sparc%20Ubuntu%20trunk/builds/37/steps/test/logs/stdio
and I believe this was the cause of all of four of the five failures there.

The remaining one "test_corrupt_tp_name" seems to be a different issue]

----------
assignee: r.david.murray
files: fix-test_gdb-whitespace-issues.txt
keywords: buildbot
messages: 102383
nosy: dmalcolm, r.david.murray
severity: normal
stage: patch review
status: open
title: test_gdb is susceptible to tty width settings
versions: Python 2.7
Added file: http://bugs.python.org/file16766/fix-test_gdb-whitespace-issues.txt

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