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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - diagnose_if generates duplicate diagnostics"
href="https://llvm.org/bugs/show_bug.cgi?id=31638">31638</a>
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<th>Summary</th>
<td>diagnose_if generates duplicate diagnostics
</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>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
</td>
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<th>Reporter</th>
<td>eric@efcs.ca
</td>
</tr>
<tr>
<th>CC</th>
<td>dgregor@apple.com, llvm-bugs@lists.llvm.org
</td>
</tr>
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<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>In the example below 3 diagnostics are generated for each `diagnose_if` failure
when only one diagnostic should be:
Example:
// clang++ -std=c++11 test.cpp
struct String {
String(char const* __s)
__attribute__((diagnose_if(__s == nullptr, "oh no", "warning")));
// expected-warning@-1 3 {{oh no}}
String(int __s)
__attribute__((diagnose_if(__s != 0, "oh no", "warning")))
// expected-warning@-1 3 {{oh no}}
{
}
};
String::String(char const* __s) {}
int main() {
String s(nullptr);
String ss(42);
}</pre>
</div>
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