https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104949
Bug ID: 104949
Summary: [OpenMP] omp target: firstprivate of allocatable array
– only descriptor firstprivatized
Product: gcc
Version: 12.0
Status: UNCONFIRMED
Keywords: openmp, wrong-code
Severity: normal
Priority: P3
Component: fortran
Assignee: unassigned at gcc dot gnu.org
Reporter: burnus at gcc dot gnu.org
Target Milestone: ---
Found via
https://github.com/SOLLVE/sollve_vv/blob/master/tests/5.0/target/test_target_defaultmap_firstprivate.F90
The line:
!$omp target firstprivate(A)
is translated as
.omp_data_arr.19.a = &a;
#pragma omp target num_teams(1) thread_limit(0) firstprivate(a)
[child fn: MAIN__._omp_fn.1 (.omp_data_arr.19,
.omp_data_sizes.20,
.omp_data_kinds.21)]
Thus, it does not handle the descriptor. See also PR 90742.
* * *
implicit none (type,external)
integer, allocatable :: A(:)
A = [1,2,3,4,5,6]
!$omp parallel firstprivate(A)
!$omp master
if (any (A /= [1,2,3,4,5])) error stop
A(:) = [99,88,77,66,55]
!$omp end master
!$omp end parallel
!$omp target firstprivate(A)
if (any (A /= [1,2,3,4,5])) error stop
A(:) = [99,88,77,66,55]
!$omp end target
if (any (A /= [1,2,3,4,5])) error stop
end
