<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/85570>85570</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            `clang++-17` crashes in `clang::CodeGen::CodeGenModule::getNaturalTypeAlignment`
        </td>
    </tr>

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

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

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

<pre>
    Hey, I'm running into an issue running clang++-17 on a `c7g.medium` AWS ARM instance with the following file as input (`test.cpp`):

```cpp
#include <arm_sve.h>
#include <stddef.h>

namespace arm_sve_edge {
__attribute__((target("+sve"))) void compress() {
    uint64_t vl = svcntb();

    svuint8_t index_reg;
    for (size_t j = 0; j < vl; j++) {
        index_reg[j] = j;
    }
}
}
```

Exact reproduction steps:

1. Start an `c7g.medium` instance with an Ubuntu 22.04.4 LTS AMI (exact AMI: `ami-02b7c7e61897b5e21` in `eu-central-1`)
2. Connect via SSH/Instance connect
3. Install clang like this (you might have to confirm some prompts):
```
cd /tmp && \
        wget https://apt.llvm.org/llvm.sh && \
        chmod +x llvm.sh && \
        sudo ./llvm.sh 17 all
```
4. Create an example file:
```
nano test.cpp
```
5. Paste file content from above, Ctrl+x to save & exit
6. Run clang (with flags as described [here](https://llvm.org/docs/HowToSubmitABug.html#crashing-bugs)):

```
LLVM_SYMBOLIZER_PATH=llvm-symbolizer-17 clang++-17 -c -emit-llvm -Xclang -disable-llvm-passes test.cpp
```

This will produce the attached trace: [clang-output.txt](https://github.com/llvm/llvm-project/files/14627731/clang-output.txt), implying that this is a front-end bug.

The requested bug report files are in this file: [bug-report.zip](https://github.com/llvm/llvm-project/files/14627736/bug-report.zip). I couldn't quite get cvise or creduce to accept these as inputs, so I couldn't create a minimized version of the file. I hope it will still be useful.

This issue might be related to #45429.
</pre>
<img width="1px" height="1px" alt="" src="http://email.email.llvm.org/o/eJysVltv4zoO_jXKC2HDlm_JQx6SdLJToN09mHavL4FsM7a6suQjUenl1y9kp5dMewZY4BSBqpj0J_IjPyrCOdlpxDUrtqy4WghPvbHrJ2GFJqO8W9SmfV5_x2fGd3DNeDWA9VpL3YHUZEBokM55fHvaKKE7xreMb6O0AqNBACuTpuriAVvpB1YmsPnnHWx-3ILUjoRuEB4l9UA9wtEoZR4D0FEqBOFA6tETML5kZULoKG7GkZUJ4yuWbVhyxZLXtUzmT3CYn_BM6kb5FoFlO2GHgzth3LPs21d2R22Lx4_madViQDeKBuEMcMC2Q2DVdrYfDoLIytoTHg4hTL4kYTukac8Z37oTTpvV_IGTkS00ZhgtOjd5rd7hAAC81FTmB4KTApZdgTs1murZk2Xbj9EFd3cKLywPBFK3-HSw2L15BfvR2MCfky94IHiYIBOWbaftDk5q2s81-xRL-HuHLbYPrLiaEB4uzmDV1Tmsz5vXunyM-9uTaAgsjta0viFpNDjC0f1U0zSGOxKWQp996qLL7hEa_l57TR44j5M8zuHm_g42t9chd5yO29xes2wTgMQgo4TXVVNhmS5XVV0gT2fMYEYfNajJChWl516bwuEx7IzW2BCcpIC7u--M769fw2hm0-yaxTAZlJolAUr-F4F66UI8z8bDILueoBcnBDLh5aO0AzgzIIzWDCO5ix6_ZLFpgfE9DSMwXjJeAit2r8StHjsk6IlmOvme8b0YKVbqNMTGdozvp63rv3q56QcTwLdP8Asv51sD8QektAKh1Jex5jHsLArCUCN8EsOocJL3HyWnhTbwpvWvPIoYfhOOZpjAHaEmOFozgKhN0NsOdmTVlAYZcIHlkAM-yXOByhh-eH0uDuPLqYmOSnQuTJ0WXWNljS2wYtujRVZcMb68JPUDoa1pHOP77-bx3tz5epC02fou7mlQjGeNFa6Xuotq37nzIPiD4TV_vbn5x-3h7t-327_dXP_n24_Db5v77yy7CgdG7nmojZIvaMOA_WneRg1EOEiKgitE_5rTi1rpRK1wehqNwjl0vyZ4Xu9Duz5KpWDWKU4zWhCJpscWyIoGJ0UV2-mgyHgaPcX0RF_x1UnqfR03ZjiTd_4XjdY8BOXwfahnIDLNS15VWcr4_hNy4G8HchjVc7goqBc0C0s6EKEJNEWoW6h9F19mg2Dxd4-OcLKG-WMsTU3kQFgM8p-Qzt0ZEqt9F81-8Ysc_5y0Ssb3P-HyVQzX0BivWs14RfC7l4QQlNycpEMwFhqLcxEMiKbBMaSN7v2WdIEXZy5xmrP0YJBaDvIFWzihdWHimuN850qF4fDejAiS5oI7CmuN4B0evYo_tcV87c9DrA7EKhFoJQOMZ3mR81W8aNdZu8pWYoHrtEqTcllWRbro10Jkdb7iKU_zAivOi-NR5EmRlMdcLIviuJBrnvA8ydIqzfOiSOPjcsmbsuXHqlo1oq5YnuAgpHobaospnvWyKKpkoUSNyk0_ajg_K4SH3zd2PRVmkmGeKOnIvSOQJIXrcM1caCpcC5OA0Z2vh9mebVi22ZkW_4L64sutaf083LJNh_RXQd4Kdf884kbJTg-oiZXJwlu1_r8bacoydNKU6P8CAAD__42D9L4">