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<base href="https://bugs.llvm.org/">
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - LLDB build fails when done with GCC 8.1 against Python 3"
href="https://bugs.llvm.org/show_bug.cgi?id=38233">38233</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>LLDB build fails when done with GCC 8.1 against Python 3
</td>
</tr>
<tr>
<th>Product</th>
<td>lldb
</td>
</tr>
<tr>
<th>Version</th>
<td>6.0
</td>
</tr>
<tr>
<th>Hardware</th>
<td>PC
</td>
</tr>
<tr>
<th>OS</th>
<td>Linux
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
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<th>Component</th>
<td>All Bugs
</td>
</tr>
<tr>
<th>Assignee</th>
<td>lldb-dev@lists.llvm.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>bneumeier@gmail.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
</tr></table>
<p>
<div>
<pre>I don't know whether the issue is triggered by doing the build with GCC 8.1, or
by building on a system with only Python 3, or both, but the build of LLDB
crashes with:
------
[ 89%] Building CXX object
tools/lldb/source/Plugins/ScriptInterpreter/Python/CMakeFiles/lldbPluginScriptInterpreterPython.dir/PythonDataObjects.cpp.o
/usr/src/llvm/llvm-6.0.0/tools/lldb/source/Plugins/ScriptInterpreter/Python/PythonDataObjects.cpp:
In member function 'llvm::StringRef lldb_private::PythonString::GetString()
const':
/usr/src/llvm/llvm-6.0.0/tools/lldb/source/Plugins/ScriptInterpreter/Python/PythonDataObjects.cpp:410:30:
error: invalid conversion
from 'const char*' to 'char*' [-fpermissive]
c = PyUnicode_AsUTF8AndSize(m_py_obj, &size);
~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~
At global scope:
cc1plus: warning: unrecognized command line option '-Wno-vla-extension'
cc1plus: warning: unrecognized command line option '-Wno-deprecated-register'
make[2]: ***
[tools/lldb/source/Plugins/ScriptInterpreter/Python/CMakeFiles/lldbPluginScriptInterpreterPython.dir/build.make:63:
tools/lldb/source/Plugins/ScriptInterpreter/Python/CMakeFiles/lldbPluginScriptInterpreterPython.dir/PythonDataObjects.cpp.o]
Error 1
make[1]: *** [CMakeFiles/Makefile2:80120:
tools/lldb/source/Plugins/ScriptInterpreter/Python/CMakeFiles/lldbPluginScriptInterpreterPython.dir/all]
Error 2
make: *** [Makefile:152: all] Error 2
-------------
I was able to work around the problem by removing the Python 2 part of
the conditional and replacing:
char *c;
c = PyUnicode_AsUTF8AndSize(m_py_obj, &size);
with:
const char *c = PyUnicode_AsUTF8AndSize(m_py_obj, &size);
That's obviously not ideal, but is a tolerable workaround for my purposes and I
don't have ready access to Python 2 on this system so I'm not sure how to
reconcile 2 and 3 properly.</pre>
</div>
</p>
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