<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/66539>66539</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            Error on accessing struct members after atomic load
        </td>
    </tr>

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

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

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

<pre>
    The following code (compiled with clang version 16.0.6 (Fedora 16.0.6-3.fc38)) produces the error "cannot compile this l-value expression yet". GCC (13.2.1) does not complain and compiles this successfully.

I found other issues with this error message, but they did not seem to be related (from what I understand) and most focus on C++.

```sh
clang test.c -o test
gcc test.c -o test
```

```c
#include <stdatomic.h>
#include <stdio.h>

struct data {
  int inner;
};

int main() {
  _Atomic(struct data) data = (struct data){0};

  printf("%d", atomic_load(&data).inner);
}
```

Full error message:
```
test.c:11:16: error: cannot compile this l-value expression yet
  printf("%d", atomic_load(&data).inner);
 ^~~~~~~~~~~~~~~~~~
/usr/lib64/clang/16/include/stdatomic.h:133:29: note: expanded from macro 'atomic_load'
#define atomic_load(object) __c11_atomic_load(object, __ATOMIC_SEQ_CST)
 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1 error generated.
```
</pre>
<img width="1px" height="1px" alt="" src="http://email.email.llvm.org/o/eJysVE9vozgU_zTO5SkI7EDCgUOSllUPq9Vqeo-M_QCvjB3Zpp1e9rOvbMhMm2kPKw1Cxvj5_d7v_eXeq8EgNqQ8kfJhw-cwWte8OjQDuk1n5VvzPCL0Vmv7qswAwkoEQg_CTlelUcKrCiMIzc0AL-i8sgaKKsuzKt5qUVrH14Mty3rBDoTWhNZwdVbOAj2EEQGdsw4IpYIbYwOs6BBG5UFvX7ieEfD71aFPFt4wEEoz-ON8jmYKltGsiKjSoocbgubKADfyBucXPD8Lgd73s9ZvGckfSH5c1ifo7Wwk2DCiA-X9jH7xL-ktJCf0ng9I6Bm6OUT2byCVTEY94gTBQofgUPOAMrLrnZ3gdeQBnmA2Ep0P3MjINnKbrA_QWzF7sAbOhJ4IPX2gRap8ef24HCzRDuhDJmBr026RDEJ8ev4D4lNcsf5TpozQc0wwO_sgebCTEtlI2OMXN5R9L02rD24WASQPHMj-tBwCKBNAGYOOsPWM7B9-7tMa70xcGUJjkbzXvhwTFUIP7-BTvpMZ9gC_iMj-lP9qAuDqlAl9MkEJLWX6nGHx9aItl0lWrTDZQprWH3h_HdR21vquUth9vJffJU-EHYsiLhVhx0Uxbv5HH_wuv4CUj__eP7e8t7N3hLZaddWO0DZVIKFtURHariVBaPuhZo4FY4Qdo4Vj7A5MDn6_ciNRQmqKiQtngdD9B5b7H8UmsVcG73yw3T8oQkz-5SKK4vK59AyXy_H5rz-fzpdvj39fzt-eo69fO_rls-gUa04HNOhiY2d3Od3Ihsma1XyDTVHVu0Ne1rv9Zmwq1h9ouRN1IctdxUrGqr6o-rKQfdGVdb5RDc0py-uiLGpa7vZZV3LRY93vUYhSyJLscpy40pnWL1Nm3bBJo6mpqpLVG8071P42wF0TL227efBkl2vlg_-pFlTQ2DwmR6wBnsZgHOpr50w4deg88D6gW6MOMa6b2elmDOHqYzHTltB2UGGcu0zYKZaFfrl9tldnlwy0ywAltE1E_wsAAP__viv9Zw">