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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - diagnose_if attribute cannot be used on constructors"
href="https://llvm.org/bugs/show_bug.cgi?id=31637">31637</a>
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<th>Summary</th>
<td>diagnose_if attribute cannot be used on constructors
</td>
</tr>
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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>All
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>normal
</td>
</tr>
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<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>C++
</td>
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
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<tr>
<th>Reporter</th>
<td>eric@efcs.ca
</td>
</tr>
<tr>
<th>CC</th>
<td>dgregor@apple.com, llvm-bugs@lists.llvm.org
</td>
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<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>When placed at the end of a constructor declaration the diagnose_if attribute
doesn't correctly parse the arguments. Additionally if an initializer list is
present the diagnose_if attribute will cause Clang to segfault.
Example:
// clang++ -std=c++1z test.cpp
struct Foo {
int II = 42;
Foo(int I) __attribute__((diagnose_if(I, "oh no", "error")))
// expected-error@-1 {{use of undeclared identifier 'I'}}
{}
Foo(int I, int J) __attribute__((diagnose_if(I, "oh no", "error")))
: II(I) {} // ICE's clang
};
int main() {
Foo f(1);
Foo ff(1, 1);
}</pre>
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