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[flang][OpenMP] Add semantics test: named COMMON + member with firstprivate+lastprivate is valid #162234

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tblah merged 1 commit into from
Oct 16, 2025
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[flang][OpenMP] Add semantics test: named COMMON + member with firstprivate+lastprivate is valid #162234

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20 changes: 20 additions & 0 deletions flang/test/Semantics/OpenMP/omp-common-fp-lp.f90
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! RUN: %flang_fc1 -fopenmp -fopenmp-version=51 -fsyntax-only %s 2>&1 | FileCheck %s --allow-empty
! CHECK-NOT: error:

! Regression test for issue #162033.
! Verify that a named COMMON block can appear in a data-sharing clause together
! with one of its members in another clause on the same construct. This is valid
! in OpenMP >= 5.1 because:
! - A named COMMON in a clause is equivalent to listing all its explicit members
! - A list item may appear in both FIRSTPRIVATE and LASTPRIVATE on the same directive
! OpenMP 5.0 explicitly forbade this combination.

subroutine sub1()
common /com/ j
j = 10
!$omp parallel do firstprivate(j) lastprivate(/com/)
do i = 1, 10
j = j + 1
end do
!$omp end parallel do
end