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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - clang-cl does not evaluate arguments left-to-right in initializer-list constructor call"
href="https://llvm.org/bugs/show_bug.cgi?id=31831">31831</a>
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<th>Summary</th>
<td>clang-cl does not evaluate arguments left-to-right in initializer-list constructor call
</td>
</tr>
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<th>Product</th>
<td>clang
</td>
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<th>Version</th>
<td>trunk
</td>
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<th>Hardware</th>
<td>PC
</td>
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<th>OS</th>
<td>Windows 2000
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
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<th>Severity</th>
<td>normal
</td>
</tr>
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<th>Priority</th>
<td>P
</td>
</tr>
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<th>Component</th>
<td>C++11
</td>
</tr>
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
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<th>Reporter</th>
<td>hans@chromium.org
</td>
</tr>
<tr>
<th>CC</th>
<td>dgregor@apple.com, llvm-bugs@lists.llvm.org
</td>
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<th>Blocks</th>
<td>13707
</td>
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<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>For example:
int f();
int g();
int h();
struct Base {
Base(int a, int b, int c);
};
struct Derived : public Base {
Derived();
};
Derived::Derived() : Base{f(), g(), h()} {}
MSVC: (<a href="https://godbolt.org/g/7T91wC">https://godbolt.org/g/7T91wC</a>)
f(), g(), h()
clang-cl: (<a href="https://godbolt.org/g/Xmb51J">https://godbolt.org/g/Xmb51J</a>)
h(), g(), f()
clang linux: (<a href="https://godbolt.org/g/5aFLCF">https://godbolt.org/g/5aFLCF</a>)
f(), g(), h()
This came up in Chromium recently, where some new code relies on using
initializer lists to force the order of evaluation.</pre>
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</p>
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