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<base href="http://llvm.org/bugs/" />
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - invalid prompt in AbbreviationsTestCase.test_nonrunning_command_abbreviations test - apparent thread race condition"
href="http://llvm.org/bugs/show_bug.cgi?id=22611">22611</a>
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<th>Summary</th>
<td>invalid prompt in AbbreviationsTestCase.test_nonrunning_command_abbreviations test - apparent thread race condition
</td>
</tr>
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<th>Product</th>
<td>lldb
</td>
</tr>
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<th>Version</th>
<td>unspecified
</td>
</tr>
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<th>Hardware</th>
<td>PC
</td>
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<th>OS</th>
<td>FreeBSD
</td>
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<th>Status</th>
<td>NEW
</td>
</tr>
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<th>Severity</th>
<td>normal
</td>
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<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>All Bugs
</td>
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<th>Assignee</th>
<td>lldb-dev@cs.uiuc.edu
</td>
</tr>
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<th>Reporter</th>
<td>emaste@freebsd.org
</td>
</tr>
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<th>Classification</th>
<td>Unclassified
</td>
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<p>
<div>
<pre>Looking at test failures on FreeBSD I came across one relating to prompt
setting.
Found by:
dotest.py --executable /data/emaste/src/llvm/build/bin/lldb -C /usr/bin/clang
-v -t -f AbbreviationsTestCase.test_nonrunning_command_abbreviations
which produced the following:
...
(lldb) settings set prompt "[with-three-trailing-spaces] "
runCmd: com sou ./change_prompt.lldb
output:
runCmd: settings show prompt
output: prompt (string) =
"\037777777645\037777777645\037777777645\037777777645\037777777645\037777777645\037777777645\037777777645\037777777645\037777777645\037777777645\037777777645\037777777645\037777777645\037777777645\037777777645\037777777645\037777777645\037777777645\037777777645\037777777645\037777777645\037777777645\037777777645\037777777645\037777777645\037777777645\037777777645\037777777645\037777777645\037777777645"
Expecting start string: prompt (string) = "[with-three-trailing-spaces] "
Not matched
While trying to reproduce this manually I found that short prompts generally
work, but longer prompts fail:
(lldb) settings set prompt "1234567890123456789012"
1234567890123456789012settings set prompt "12345678901234567890123"
¥¥¥¥¥¥¥¥¥¥¥¥¥¥¥¥¥¥¥¥¥¥¥
On FreeBSD-11 (the development branch) malloc has "opt.junk" enabled by
default, which fills uninitialized allocated memory with 0xa5 and deallocated
memory with 0x5a; the ¥ character is 0xa5.</pre>
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