| Issue |
71370
|
| Summary |
[Flang][OpenMP]Incorrect execution result when reduction-identifier(+) is used in REDUCTION clause
|
| Labels |
flang:frontend,
flang:openmp
|
| Assignees |
|
| Reporter |
ohno-fj
|
```
Version of flang-new : 18.0.0(1c876ff5155c4feeb2b2885eb3e6abda17c4b7f4)
```
Using `reduction-identifier(+)` in `REDUCTION` clause results in incorrect execution.
The program is executed on 1 thread and expects a value of 11 for a.
The following are the test program, Flang-new, Gfortran and ifort compilation result.
ompds111_2.f90:
```fortran
program main
integer :: a
call OMP_SET_NUM_THREADS(1)
a=1
!$omp parallel reduction(+:a)
a=10
!$omp end parallel
print *,a
end program main
```
```
$ flang-new ompds111_2.f90 -fopenmp; ./a.out
10
$
```
```
$ gfortran ompds111_2.f90 -fopenmp; ./a.out
11
$
```
```
$ ifort ompds111_2.f90 -qopenmp; ./a.out
11
$
```
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