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TheRock/compiler/amd-llvm/flang/test/Semantics/dosemantics02.f90
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Flatten subprojects into a single base monorepo
2026-09-02 16:34:47 -07:00

45 lines
1.3 KiB
Fortran

! RUN: %python %S/test_errors.py %s %flang_fc1
! C1121 -- any procedure referenced in a concurrent header must be pure
! Also, check that the step expressions are not zero. This is prohibited by
! Section 11.1.7.4.1, paragraph 1.
SUBROUTINE do_concurrent_c1121(i,n)
IMPLICIT NONE
INTEGER :: i, n, flag
!ERROR: DO CONCURRENT mask expression may not reference impure procedure 'random'
DO CONCURRENT (i = 1:n, random() < 3)
flag = 3
END DO
CONTAINS
IMPURE FUNCTION random() RESULT(i)
INTEGER :: i
i = 35
END FUNCTION random
END SUBROUTINE do_concurrent_c1121
SUBROUTINE s1()
INTEGER, PARAMETER :: constInt = 0
! Warn on this one for backwards compatibility
!WARNING: DO step expression should not be zero [-Wzero-do-step]
DO 10 I = 1, 10, 0
10 CONTINUE
! Warn on this one for backwards compatibility
!WARNING: DO step expression should not be zero [-Wzero-do-step]
DO 20 I = 1, 10, 5 - 5
20 CONTINUE
! Error, no compatibility requirement for DO CONCURRENT
!ERROR: DO CONCURRENT step expression may not be zero
DO CONCURRENT (I = 1 : 10 : 0)
END DO
! Error, this time with an integer constant
!ERROR: DO CONCURRENT step expression may not be zero
DO CONCURRENT (I = 1 : 10 : constInt)
END DO
end subroutine s1