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! { dg-do run }
! Torture-test TRIM and LEN_TRIM for correctness.
! Given a total string length and a trimmed length, construct an
! appropriate string and check gfortran gets it right.
SUBROUTINE check_trim (full_len, trimmed_len)
IMPLICIT NONE
INTEGER, INTENT(IN) :: full_len, trimmed_len
CHARACTER(LEN=full_len) :: string
string = ""
IF (trimmed_len > 0) THEN
string(trimmed_len:trimmed_len) = "x"
END IF
IF (LEN (string) /= full_len &
.OR. LEN_TRIM (string) /= trimmed_len &
.OR. LEN (TRIM (string)) /= trimmed_len &
.OR. TRIM (string) /= string (1:trimmed_len)) THEN
PRINT *, full_len, trimmed_len
PRINT *, LEN (string), LEN_TRIM (string)
CALL abort ()
END IF
END SUBROUTINE check_trim
! The main program, check with various combinations.
PROGRAM main
IMPLICIT NONE
INTEGER :: i, j
DO i = 0, 20
DO j = 0, i
CALL check_trim (i, j)
END DO
END DO
END PROGRAM main
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