<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/145129>145129</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            llvm-objcopy is deleting a file when overwriting a file mounted in Docker
        </td>
    </tr>

    <tr>
      <th>Labels</th>
      <td>
            new issue
      </td>
    </tr>

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

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

<pre>
    Here's the discovery process
https://github.com/emscripten-core/emsdk/issues/1568

Given `file.wasm` mounted in a Docker volume in windows
Running
`/emsdk/upstream/bin/llvm-objcopy file.wasm file.wasm`
causes: `/emsdk/upstream/bin/llvm-objcopy: error: No such file or directory`
and it also deletes the original file

Providing a different name to the output file allows the process to complete successfully. This works:
/emsdk/upstream/bin/llvm-objcopy file.wasm file2.wasm 

Copying the file to /tmp allows llvm-objcopy to process the file without changing its name. This may mean that this is a filesystem race condition due to working in a mounted Docker directory. Perhaps llvm-objcopy should wait for the file deleting operation to complete before writing the modified version.

This happens in multiple versions. I.e. version 17
```
root@273b84dcb718:/code/builds# /emsdk/upstream/bin/llvm-objcopy --version
llvm-objcopy, compatible with GNU objcopy
LLVM (http://llvm.org/):
  LLVM version 17.0.0git
  Optimized build.
```
also tested in version 19
</pre>
<img width="1" height="1" alt="" src="http://email.email.llvm.org/o/eJycVE2P4zYM_TXKhRhDUb4PPqS7yLbAdDso2r3LEh1zRxYNSU6Q_vpCcjyZ2UPRFvDBoqTHR_Lp6Rjp7BFrsflJbD4v9Jg6DvXnb88vi4btrf4ZAwq1i5A6BEvR8AXDDYbABmMU8tilNESxOgp1Eup0ptSNTWW4F-qEfTSBhoT-yXCGyRH7KtSJYhwxCnVabrZ7IY9CHr_QBT2IrWzJYXXVsRdbCT2PPqEF8qDhM5tXDHBhN_aYQ1fylq-Zxe-j9-TPGWor3yUah5gC6symIS_UyblL_8TNd8PDDd5SwfukQh6NHiPmquA_wOXjGAKH_POVIY6mK8DAASwFNInDbUqgvQVKoF1ksOgw4dRhDnQmr125NzXmJfCFLPkzaLDUthjQJ_C6R0g8XRrTMKYplXaOrxPWfUb5lOF-yEkypxxrR-duFfzRUYQrh9cyQHn8n41T0-9E9xMPt0w2MyiMEoNQp9QPM7cPSIkfPOcbV0odjwlMp_05Y1GKpeA7417foEftIXU6QcohiqDL5XiLCXsI2iAY9pYSsQc7Fh651IKX1TRL666qtwFV8IKh08MPRGPHo7Nw1ZSg5fBgW8aXUXnAoEu69x1vsOWAcA2U5rb0bKkltHDBEIl9NXWu1NbpYUAfM8V-dIkGh_OxWMEvFVbzEpa7u9ynTx4DcxJrqXarZr-2ptkt99PDNGzz62tGcjYKtYJ_Peinp3s2IY8ftK4-lRJ1ouY-Mfjy9U-Yt-Xx-fnbryDUPvvDmz1kiIrDuawOk-gAytFHVZWs5JlS2fptSNTTX2ihkK9-qLi8n4TxbhFvGIeFrVf2sDroBdbL3Uaut4e1Uouu1rudtbLV0jZ6v2o3eyW1NXaDWh7UZrVaUK2k2sitWsrlSipVmfVKLRF3sm32BrUSa4m9JlfNxSyKm9XL9WapDgunG3Sx-KlSHq9QdoVS2V5DXZrYjOco1tJRTPEBkyg5rD-0n-JDXvr-ODr0kE14VtQ9_s4pJ0UvxuDqf3DnnGge9xD4O5r0wZmnci61-jsAAP__OlwT9Q">