gcc/testsuite/gfortran.dg/do_2.f90

   1 ! { dg-do compile }
   2 ! Check the fix for PR20839, which concerned non-compliance with one of the
   3 ! constraints for block-do-constructs (8.1.4.1.1):
   4 ! Constraint: If the do-stmt of a block-do-construct is identified by a
   5 ! do-construct-name, the corresponding end-do shall be an end-do-stmt
   6 ! specifying the same do-construct-name. (Tests a & b)
   7 ! If the do-stmt of a block-do-construct is not identified by a
   8 ! do-construct-name, the corresponding end-do shall not specify a
   9 ! do-construct-name. (Tests c & d)
  10 ! Constraint: If the do-stmt is a nonlabel-do-stmt, the corresponding end-do
  11 ! shall be an end-do-stmt.
  12 ! Constraint: If the do-stmt is a label-do-stmt, the corresponding end-do shall
  13 ! be identified with the same label.
  14 !
  15 ! Test a - this was the PR
  16   doi: DO 111 i=1,3 ! { dg-error "requires matching ENDDO name" }
  17 111 continue
  18 ! Test b
  19   doii: DO 112 ij=1,3
  20 112 enddo doij      ! { dg-error "Expected label" }
  21 ! Test c
  22   DO 113 ik=1,3
  23 113 enddo doik      ! { dg-error "Syntax error" }
  24 ! Test d
  25   DO il=1,3
  26   enddo doil        ! { dg-error "Syntax error" }
  27 ! Test e
  28   doj: DO 114 j=1,3
  29   enddo doj         ! { dg-error "doesn't match DO label" }
  30
  31 ! Correct block do constructs
  32 dok: DO 115 k=1,3
  33     dokk: do kk=1,3
  34         dokkk: DO
  35                    do kkkk=1,3
  36                        do
  37                        enddo
  38                    enddo
  39                enddo dokkk
  40           enddo dokk
  41 115  enddo dok
  42 ! Correct non-block do constructs
  43   do 117 l=1,3
  44       do ll=1,3
  45           do 116 lll=1,3
  46 116       continue
  47       enddo
  48 117 enddo
  49 ! These prevent an EOF error, arising from the previous errors.
  50 end do
  51 113 end do
  52 112 end do doii
  53 END
  54