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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Should clang warn when modifying a sub-field of a constant sub-object?"
href="https://bugs.llvm.org/show_bug.cgi?id=37201">37201</a>
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<th>Summary</th>
<td>Should clang warn when modifying a sub-field of a constant sub-object?
</td>
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<th>Product</th>
<td>clang
</td>
</tr>
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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>Linux
</td>
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<th>Status</th>
<td>NEW
</td>
</tr>
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<th>Severity</th>
<td>enhancement
</td>
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<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>Frontend
</td>
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
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<th>Reporter</th>
<td>lebedev.ri@gmail.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
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<pre><a href="https://godbolt.org/g/t5Z2Rp">https://godbolt.org/g/t5Z2Rp</a>
struct A {
int v;
};
struct B {
A& a0;
A* a1;
};
struct C {
C(const B& b_) : b0(b_), b1(&b_) {
const B b(b_);
b.a0.v = 0; b.a1->v = 0;
}
~C() {
b0.a0.v = 0; b0.a1->v = 0;
b1->a0.v = 0; b1->a1->v = 0;
}
const B& b0;
const B* b1;
};
I was surprised not to see a warning per each ".v = 0".</pre>
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