<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/61992>61992</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
             libomptarget.so.15`target OpenMP device offload Assertion '__n < this->size()' failed
        </td>
    </tr>

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

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

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

<pre>
    With llvm project updated Apr 8 2023 on a system with NVIDIA QuadroRTX 4000 GPU (compute 7.5). I'm using CUDA 12 because that's the only version nvidia provide for my OS (Fedora 37).
```
clang version 17.0.0 (https://github.com/llvm/llvm-project.git b206cde3504c0078469f02bd74aeb5eb5ab875f5)
Target: x86_64-unknown-linux-gnu
Thread model: posix
InstalledDir: /home/bloring/work/llvm/llvm-install/bin
```
The following code crashes inside of the target region inside openmp itself.
```C++
#include <stdio.h> 
#include <omp.h>
int main() 
{
  int num_devices = omp_get_num_devices();
  printf("Number of available devices %d\n", num_devices);
  #pragma omp target 
  {
      if (omp_is_initial_device()) {
        printf("Running on host\n"); 
      } else {
        int nteams= omp_get_num_teams(); 
 int nthreads= omp_get_num_threads();
        printf("Running on device with %d teams in total and %d threads in each team\n",nteams,nthreads);
 }   
  }
  return 0;  
}
```
Full output of compilation, run, crash, and stack.
```
smic:/work/SENSEI/omp_do$clang++ -g -stdlib=libstdc++ -fopenmp -fopenmp-targets=nvptx64 -Xopenmp-target=nvptx64 --offload-arch=sm_75  test.cpp 
clang++: warning: CUDA version is newer than the latest partially supported version 11.8 [-Wunknown-cuda-version]
clang: warning: CUDA version is newer than the latest partially supported version 11.8 [-Wunknown-cuda-version]
smic:/work/SENSEI/omp_do$./a.out 
Number of available devices 1
/usr/bin/../lib/gcc/x86_64-redhat-linux/12/../../../../include/c++/12/bits/stl_vector.h:1123: std::vector::reference std::vector<void *>::operator[](std::vector::size_type) [_Tp = void *, _Alloc = std::allocator<void *>]: Assertion '__n < this->size()' failed.
Aborted (core dumped)
smic:/work/SENSEI/omp_do$lldb ./a.out 
(lldb) target create "./a.out"
Current executable set to '/work/SENSEI/omp_do/a.out' (x86_64).
(lldb) run
Process 1339982 launched: '/work/SENSEI/omp_do/a.out' (x86_64)
Number of available devices 1
/usr/bin/../lib/gcc/x86_64-redhat-linux/12/../../../../include/c++/12/bits/stl_vector.h:1123: std::vector::reference std::vector<void *>::operator[](std::vector::size_type) [_Tp = void *, _Alloc = std::allocator<void *>]: Assertion '__n < this->size()' failed.
Process 1339982 stopped
* thread #1, name = 'a.out', stop reason = signal SIGABRT
    frame #0: 0x00007ffff7998e5c libc.so.6`__pthread_kill_implementation + 268
libc.so.6`__pthread_kill_implementation:
->  0x7ffff7998e5c <+268>: movl   %eax, %ebp
    0x7ffff7998e5e <+270>: negl   %ebp
 0x7ffff7998e60 <+272>: cmpl   $0xfffff000, %eax         ; imm = 0xFFFFF000 
    0x7ffff7998e65 <+277>: movl   $0x0, %eax
(lldb) bt
* thread #1, name = 'a.out', stop reason = signal SIGABRT
  * frame #0: 0x00007ffff7998e5c libc.so.6`__pthread_kill_implementation + 268
    frame #1: 0x00007ffff7948a76 libc.so.6`raise + 22
    frame #2: 0x00007ffff79327fc libc.so.6`abort + 215
    frame #3: 0x00007ffff7cd7e80 libstdc++.so.6`std::__glibcxx_assert_fail(char const*, int, char const*, char const*) + 96
    frame #4: 0x00007ffff7eaca0d libomptarget.so.15`target(ident_t*, DeviceTy&, void*, int, void**, void**, long*, long*, void**, void**, int, int, unsigned long, int, AsyncInfoTy&) + 5933
    frame #5: 0x00007ffff7ea929f libomptarget.so.15`__tgt_target_kernel + 591
    frame #6: 0x00005555555552cc a.out`main at test.cpp:6:3
    frame #7: 0x00007ffff7933510 libc.so.6`__libc_start_call_main + 128
    frame #8: 0x00007ffff79335c9 libc.so.6`__libc_start_main@@GLIBC_2.34 + 137
    frame #9: 0x0000555555555135 a.out`_start + 37
(lldb) 
```
</pre>
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