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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - QMap C++ initializer list slow"
href="https://bugs.llvm.org/show_bug.cgi?id=42515">42515</a>
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<th>Summary</th>
<td>QMap C++ initializer list slow
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<th>Product</th>
<td>clang
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<th>Version</th>
<td>8.0
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<th>Hardware</th>
<td>PC
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<th>OS</th>
<td>MacOS X
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<th>Status</th>
<td>NEW
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<th>Severity</th>
<td>normal
</td>
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<th>Priority</th>
<td>P
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<th>Component</th>
<td>C++
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
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<th>Reporter</th>
<td>matthias@opengis.ch
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<th>CC</th>
<td>blitzrakete@gmail.com, dgregor@apple.com, erik.pilkington@gmail.com, llvm-bugs@lists.llvm.org, richard-llvm@metafoo.co.uk
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<p>
<div>
<pre>Compiling QMap with large initializer lists (a couple of 100 entries) takes
very long.
For a code example see here:
<a href="https://github.com/qgis/QGIS/blob/master/src/core/qgscoordinatereferencesystem_legacy.h#L23">https://github.com/qgis/QGIS/blob/master/src/core/qgscoordinatereferencesystem_legacy.h#L23</a>
With this discussion concerning build times on BSD
<a href="http://osgeo-org.1560.x6.nabble.com/QGIS-Developer-QGIS-3-8-0-on-FreeBSD-build-takes-several-hours-td5408676.html">http://osgeo-org.1560.x6.nabble.com/QGIS-Developer-QGIS-3-8-0-on-FreeBSD-build-takes-several-hours-td5408676.html</a>
An issue on Qt side (for MacOS) has been closed and an upstream bug recommended
<a href="https://bugreports.qt.io/browse/QTBUG-57672">https://bugreports.qt.io/browse/QTBUG-57672</a></pre>
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