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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Subprocesses cannot open input files created by bugpoint"
href="https://bugs.llvm.org/show_bug.cgi?id=38390">38390</a>
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<tr>
<th>Summary</th>
<td>Subprocesses cannot open input files created by bugpoint
</td>
</tr>
<tr>
<th>Product</th>
<td>tools
</td>
</tr>
<tr>
<th>Version</th>
<td>trunk
</td>
</tr>
<tr>
<th>Hardware</th>
<td>PC
</td>
</tr>
<tr>
<th>OS</th>
<td>Windows NT
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>enhancement
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
<tr>
<th>Component</th>
<td>bugpoint
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>llvm@meinersbur.de
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
</tr></table>
<p>
<div>
<pre>Commit r334630 ("LTO: Keep file handles open for memory mapped files.") broke
bugpoint on Windows. The launched opt process cannot access the input file
created by bugpoint:
$ (cd 'C:\Users\MEINER~1\AppData\Local\Temp\reproduce-bruxta1h' &&
'C:\Users\meinersbur\build\llvm\release\bin\bugpoint.exe'
'-opt-command=C:\Users\meinersbur\build\llvm\release\bin\opt.exe'
'C:\Users\MEINER~1\AppData\Local\Temp\reproduce-bruxta1h\pr3821817-precompute.ll'
-scoped-noalias -polly-codegen)
C:\Users\meinersbur\build\llvm\release\bin\opt.exe:
bugpoint-input-b43aded.bc: error: Could not open input file:
permission denied
C:\Users\meinersbur\build\llvm\release\bin\opt.exe:
bugpoint-input-6517e54.bc: error: Could not open input file:
permission denied
C:\Users\meinersbur\build\llvm\release\bin\opt.exe:
bugpoint-input-6575634.bc: error: Could not open input file:
permission denied
C:\Users\meinersbur\build\llvm\release\bin\opt.exe:
bugpoint-input-7dad9ae.bc: error: Could not open input file:
permission denied
C:\Users\meinersbur\build\llvm\release\bin\opt.exe:
bugpoint-input-81165ee.bc: error: Could not open input file:
permission denied
C:\Users\meinersbur\build\llvm\release\bin\opt.exe:
bugpoint-input-018d544.bc: error: Could not open input file:
permission denied
C:\Users\meinersbur\build\llvm\release\bin\opt.exe:
bugpoint-input-e88e95a.bc: error: Could not open input file:
permission denied
C:\Users\meinersbur\build\llvm\release\bin\opt.exe:
bugpoint-input-d37f5e8.bc: error: Could not open input file:
permission denied
C:\Users\meinersbur\build\llvm\release\bin\opt.exe:
bugpoint-input-29843f5.bc: error: Could not open input file:
permission denied
C:\Users\meinersbur\build\llvm\release\bin\opt.exe:
bugpoint-input-26d3c62.bc: error: Could not open input file:
permission denied
C:\Users\meinersbur\build\llvm\release\bin\opt.exe:
bugpoint-input-dc3b1bc.bc: error: Could not open input file:
permission denied
verify failed!
bugpoint-input-b43aded.bc is a strange file. I can see it in explorer,
but when trying to open it, Notepad claims it doesn't exist and offers
to create it (which will then fail).
Also see
<a href="https://lists.llvm.org/pipermail/llvm-commits/Week-of-Mon-20180723/573040.html">https://lists.llvm.org/pipermail/llvm-commits/Week-of-Mon-20180723/573040.html</a></pre>
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