<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/137762>137762</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            Clang 20.1.3 UBSAN link on Windows fails on LLVM version update
        </td>
    </tr>

    <tr>
      <th>Labels</th>
      <td>
            clang
      </td>
    </tr>

    <tr>
      <th>Assignees</th>
      <td>
      </td>
    </tr>

    <tr>
      <th>Reporter</th>
      <td>
          MisterBMisterB
      </td>
    </tr>
</table>

<pre>
    Dear all,

first of all, I appreciate your great work in the LLVM project. I'm using LLVM 19.1.2 for compiling C code on Windows. I created successfully debug, release, coverage, ASAN and UBSAN builds. Everything went fine.

When I upgrade to LLVM clang 20.1.3 the targets debug, release, coverage, ASAN build OK. When I try to build the  UBSAN target I get the following link error:


If I copy the LLVM 19.1.2 clang_rt.ubsan_standalone-x86_64.lib library to LLVM 20.1.3 installation everything build and run OK again.

Linking against a newer Windows SDK version also does not help.

What do I wrong? Has there anything changed inside the build philosophy for UBSAN? Has there anything accidential changed in clang_rt.ubsan_standalone-x86_64.lib?

Best regards

Michael
</pre>
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