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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - function-attrs derives mustprogress and willreturn for non-exact definitions"
href="https://bugs.llvm.org/show_bug.cgi?id=50047">50047</a>
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<th>Summary</th>
<td>function-attrs derives mustprogress and willreturn for non-exact definitions
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<th>Product</th>
<td>libraries
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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
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<th>Status</th>
<td>NEW
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<th>Severity</th>
<td>enhancement
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<th>Priority</th>
<td>P
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<th>Component</th>
<td>Interprocedural Optimizations
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
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<th>Reporter</th>
<td>jdoerfert@anl.gov
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<th>CC</th>
<td>florian_hahn@apple.com, listmail@philipreames.com, llvm-bugs@lists.llvm.org
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<pre>For the non-exact definition below we should not derive attributes
(<a href="https://clang.godbolt.org/z/7WGnh9s8v">https://clang.godbolt.org/z/7WGnh9s8v</a>):
```
define linkonce i32 @square(i32) {
%2 = mul nsw i32 %0, %0
ret i32 %2
}
```
Rational why we should not derive attributes is also contained in this thread:
<a href="https://lists.llvm.org/pipermail/llvm-dev/2021-April/149960.html">https://lists.llvm.org/pipermail/llvm-dev/2021-April/149960.html</a></pre>
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