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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Unused function parameters not reported by -Wunused-parameter when only used recursively."
href="https://llvm.org/bugs/show_bug.cgi?id=25425">25425</a>
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<th>Summary</th>
<td>Unused function parameters not reported by -Wunused-parameter when only used recursively.
</td>
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<th>Product</th>
<td>clang
</td>
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<th>Version</th>
<td>3.7
</td>
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<th>Hardware</th>
<td>PC
</td>
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<th>OS</th>
<td>All
</td>
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>normal
</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>
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<th>Reporter</th>
<td>j.fisher@digipen.edu
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
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<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>The code below does not produce a warning when -Wunused-parameter is turned on.
It would be fantastic if it did, as fundamentally, the variable notUsed is
still not actually being used. As far as I can tell, neither GCC, nor MSVC
notice this issue either.
#include <iostream>
using namespace std;
int Recursive(int num, const char *notUsed);
int main() {
const char *notUsedLocal = "Not used";
cout << "Test: " << Recursive(1, notUsedLocal) << endl;
return 0;
}
int Recursive(int num, const char *notUsed) {
if (num > 5)
return num;
else
return Recursive(++num, notUsed);
}</pre>
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