<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/163284>163284</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            clang frontend command failed with exit code 135
        </td>
    </tr>

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

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

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

<pre>
    For our project AVM (https://gitlab.com/AOMediaCodec/avm),  we build using `clang` with different  sanitizers enabled as part of the Gitlab CI.

Recently, we have noticed that `clang` occasionally crashes with this type of error message:

```
clang: error: clang frontend command failed with exit code 135 (use -v to see invocation)
clang version 18.1.8 (https://github.com/llvm/llvm-project 3b5b5c1ec4a3095ab096dd780e84d7ab81f3d7ff)
Target: x86_64-unknown-linux-gnu
Thread model: posix
InstalledDir: /usr/lib/llvm-18/bin
clang: note: diagnostic msg: 
********************
PLEASE ATTACH THE FOLLOWING FILES TO THE BUG REPORT:
Preprocessed source(s) and associated run script(s) are located at:
clang: note: diagnostic msg: /tmp/av1_config-260c0e.c
clang: note: diagnostic msg: /tmp/av1_config-260c0e.sh
clang: note: diagnostic msg: 
********************
```

Example log: https://gitlab.com/AOMediaCodec/avm/-/jobs/11702400258
(The compilation enabled `Thread` sanitizer in this case -- but transient errors have occurred for other sanitizers like `address` or `undefined` as well).

Attaching:
- The 2 diagnostic files generated by clang.
- The full log from the link above (in case link is not accessible / expires).

Pls let me know if any additional information will help.

[clang_crash_artifacts.zip](https://github.com/user-attachments/files/22893797/clang_crash_artifacts.zip)

[clang_crash.log.txt](https://github.com/user-attachments/files/22893799/clang_crash.log.txt)
</pre>
<img width="1" height="1" alt="" src="http://email.email.llvm.org/o/eJy8VV1v2zgQ_DX0y8IGRVm29OAHNY3aAOklaH13jwFFriS2FCmQlGP31x9IJWmK-8AVPRxAwAa93hnOcobce9UbxAMp3pDi7YrPYbDuMLsTN_1n6we1aq28HBrrwM4OJmc_owhQ__YBCCuHECZP8pqwhrCmV0HzdiPsSFhT331AqfiVlSgIa_hpJKwi7ArgEaGdlZYwe2V6IDsqNDc92VF4VGEAqboOHZoA4LlRQX1F5wENbzVK4B4m7gLYDsKA8C5hwtXNhtCa0PojCjRBXyLSI8LATwjGBiVQQhh4-A7OCsG9soZrfQHhuB_QLxzCoDyEy4QRB52zDkb0nvcYT5uQyI4-LVovHfN6KY1f0g50zpqARoKw48iNhI6reIiEgWcVQFiJkOVFVHP2COsTBAseEZQ5WcGDsiYK94QBJ3SRMWTlJtuUfzmDYX6egdan54_18-TytmgLkaHY8pxWBW9ptZNyX1Ist3LP2zLrcrnvugX0yF2PIR7oXO4edtv1bL4Y-2jWWpn5vO7NHIsGh1zCaCXqWDpZr86E1jfGB641yrcqaUJYM3sXCan2mVZWEta0yrwW0dgQZQapeG-sD0rA6NMvUXb2E4vW97fX9adrqI_H-uo9HN9fQ3N3e3v3-80v76C5ub3-BMe7tP3m13fw8fr-7uNxmfi9w8lZgd6jBG9nJ5Cw0hNWQRws994KxQNKcLMBL5yawkuBQ9BxmPH-hqXfvzkta8I4JfNkD8KaTvVrtqOC4kb8dAc__F-SvzYKofX1mY-TjoKk_j8YIc2asOazbT1hTZbtKdtSyooysSyPA0anTUon37xkBtnR5Y5G079kCiiz-FzwaLw1tHOA4LjxKoZPsrJfEsQKMTuHErqYg2FA9zqatPqCEYNL6dD7lCwubsxGYqcMJlzu4RG1Jqx6iqo6BC4GlQZAaL2GSJ-9HkGnNHro0aBLd6e9LLmyeSnvZq2jkjFpxhSIWpkvwFt7whgOyiynS7vKxzkDF_EWq1bHigbwPCmH_huve-1BY4ARIXodVAfcXIBLqUIKS1Cms25cNH5UWsOAenr6NyneJI4PKU8fuAuq4yL4zVc1keLtPwfW7NGtedJlRBPikJMGhDWMlVW-r_aENX_fP2XWn0hstO034Rz-A_jqe_iXzqxayUMuq7ziKzxk-x3Nq2LLytVwqHbYdrQSyAtRlHnH9lWJLKtkVgjWIV-pA6OsyGiWM7bNt-WmyHmRFxy7rsrYnkqypThypTcxMTfW9Svl_YyHbJezcrvSvEXt0wvO2OJoxuJj7g4pYtu592RLtfLBf2sRVNB4-NFnajU7ffixF4ewJtFNjl0Ynw7sjwAAAP__6G-wVQ">