<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/65074>65074</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            [OpenMP] `#pragma omp distribute parallel for` causes segmentation fault
        </td>
    </tr>

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

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

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

<pre>
    ## Description

When using this very small test case, program execution crashes with `gdb` pointing to `kmp_sched.cpp`. Adding `teams` to the directive fixes the issue.

```c
int main(void)
{
    #pragma omp distribute parallel for
    for(int i = 0; i < 100; ++i)
    {
 }
    return 0;
}
```

```console
$ clang --version
clang version 18.0.0 (https://github.com/llvm/llvm-project.git 4b383107fa7585bb5ecd7f03cab7800b33d1585a)
Target: x86_64-unknown-linux-gnu
Thread model: posix
InstalledDir: /opt/software/software/LLVM/git/bin
$ clang -fopenmp reproducer.c
$ gdb ./a.out
[...]
(gdb) run
Starting program: /home/jreuter/tmp/Error/error_llvm_segfault_distribute/a.out 
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".

Program received signal SIGSEGV, Segmentation fault.
__kmp_for_static_init<int> (loc=<optimized out>, global_tid=0, schedtype=34, pstride=<optimized out>, chunk=1, codeptr=0x5555555551e1 <main+113>, plastiter=<optimized out>, plower=<optimized out>, pupper=<optimized out>, incr=<optimized out>) at /home/jreuter/Projects/Compilers/llvm-project/openmp/runtime/src/kmp_sched.cpp:215
215      if (team->t.t_serialized) {
```
</pre>
<img width="1px" height="1px" alt="" src="http://email.email.llvm.org/o/eJyUVV-P4ygM_zTuC2pEIEnThz5Mp5PVSru6lWZv77Ei4CbsEkBA5s99-hNpp3Oz_3Q3GjVgG2Pzs38WMerBIu6g3kN9WIk5jS7sPo_PAVe9U887YBwYJweMMmiftLNAD0Bvzr9_jWjJHLUdSBp1JA8YnkmchDEkYUxEiojAbokPbghiIviEcs5OiAwijhjJo04jgYYOqoeGEu-0TYs7l6XfJn-MckRVSO-hoQW5USqroaEJxRTzmeRIGpEoHVAm_YDkpJ8wLjId44zFvyOGhp7_5XmvbSKT0BZY--C0Ara92G325wUhhADjPohhEsRNnigdU9D9nJB4EYQxaMjJhVfzvGFt9qwJ8AOhwPfL8paUdNkA2wPb6-ttyyXXG2FzeBUHTHOwi4-XyA7fpfLz_JyNzuBFyioijbADWa8fMMQrjGfhRUTKtqAFJcDaMSUfgd8A64B1g07j3BfSTcA6Yx5ePmsf3FeUqRh0IlXPW17SzUls6rbu-xql2pwol6LftJT2nKuybmtxTfqzCAMm4DfkqW2OTbWe7TfrHu3aaDs_rQc7X-zGgEKRySk02dq7qJ_Oqvc2pgyAOuiQVcA65xOwLrpTehQB3y4_fPjy8ZwOsK7X9ofHOTmPdvIkoA9OzRJDIV-NBtWTAlgnCjeni7jeF0UB9QskrM2FzLYkzBfv90mEpaIvPXAJc3RTjuhrwDlhANalyQPr7kLIxdNh_h7zGx8jDicxm3R8rbuXGMg1iMsbKeznYci3nZvS6D4tmqPqCVrRG1TXYP9cTEYX01s7o_sgwjMBxjLOugfWXRB6RWZRXM8U0RUlMPam1T5dmj6gRP2AimSuEYbcv393f_fuS-aFexwmtEkslLBkefFwPObWP7lwjFkrj9rqBPxW2wT8LleocRL4Afit80lP-m9UJKPC77LfwbhemGPSCviBZsnCIunZI_ADrxZOyq-p8NdO5Djbb8AP5bJxCn0K2d1T_fJXYpm7-swf-7Lkl5PeiJh0xvWXzr1xj7_Vz97_Tq-t_KV2S0T6aY19OrdrBNbduslrgyF-18pLB-UeANaF2Sa9uIhBAuvesjG_YWV9RmtZbIk-ZWAyL6-B36UiHSMGLUwOLkd1ZbgrSa3Ujqst34oV7spmyzlj9aZdjTu5bVhFe0pLyTllrOKtlLzsKyEq1TbNSu8YZZy2bFvWjNV1UdJtVfHtVrVcsaoRUFGchDZFzq5wYVgtw2DX1HRTrYzo0cSXsRd2yxP08xChokbHFF-PJZ3MMiD_8Gg_foL6kKfPfxsJDSVSzBEjiT9U-moOZvf_eBZYtySRQVvy-CcAAP__hyNnEw">