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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Hang when lit output redirected to file with python 3"
href="https://bugs.llvm.org/show_bug.cgi?id=43776">43776</a>
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<th>Summary</th>
<td>Hang when lit output redirected to file with python 3
</td>
</tr>
<tr>
<th>Product</th>
<td>Test Suite
</td>
</tr>
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<th>Version</th>
<td>trunk
</td>
</tr>
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<th>Hardware</th>
<td>PC
</td>
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<th>OS</th>
<td>Windows NT
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>enhancement
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>lit
</td>
</tr>
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
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<th>Reporter</th>
<td>russell_gallop@sn.scee.net
</td>
</tr>
<tr>
<th>CC</th>
<td>daniel@zuster.org, llvm-bugs@lists.llvm.org
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<pre>With python 3.6.8, lit hangs if producing output with non-ascii characters and
redirecting to a file on Windows. This can happen if a test fails and has
non-ascii in the Script: output. Below I'm using the -a option to show all
output to elicit this so it doesn't need to fail.
To reproduce (with revision 689ce810598bec7b35dd7ebe33ce5c5cce1453c7)
<span class="quote">>python --version</span >
Python 3.6.8
<span class="quote">>python build/bin/llvm-lit.py llvm/test/Other -a > afile.txt</span >
llvm-lit.py: F:/git/llvm-project/llvm\utils\lit\lit\run.py:170: warning: Failed
to raise process limit: No module named 'resource'
Exception in thread Thread-5:
Traceback (most recent call last):
File "C:\Python36\lib\threading.py", line 916, in _bootstrap_inner
self.run()
File "C:\Python36\lib\threading.py", line 864, in run
self._target(*self._args, **self._kwargs)
File "C:\Python36\lib\multiprocessing\pool.py", line 479, in _handle_results
cache[job]._set(i, obj)
File "C:\Python36\lib\multiprocessing\pool.py", line 649, in _set
self._callback(self._value)
File "F:/git/llvm-project/llvm\utils\lit\lit\run.py", line 134, in <lambda>
callback=lambda r, t=test: self._process_result(t, r))
File "F:/git/llvm-project/llvm\utils\lit\lit\run.py", line 80, in
_process_result
self.progress_callback(test)
File "F:/git/llvm-project/llvm\utils\lit\lit\main.py", line 189, in
progress_callback
display.update(test)
File "F:/git/llvm-project/llvm\utils\lit\lit\display.py", line 52, in update
self.print_result(test)
File "F:/git/llvm-project/llvm\utils\lit\lit\display.py", line 73, in
print_result
print(test.result.output)
File "C:\Python36\lib\encodings\cp1252.py", line 19, in encode
return codecs.charmap_encode(input,self.errors,encoding_table)[0]
UnicodeEncodeError: 'charmap' codec can't encode characters in position
304-305: character maps to <undefined>
This should complete in a second or two but hangs instead.
This works fine with python 2.7.15, or with one thread (-j 1), or not
outputting the script with non-ascii, or not redirecting to a file.</pre>
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