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! { dg-do run }
! { dg-options "-fcheck=bits -fdump-tree-original" }
! { dg-shouldfail "Fortran runtime error: FROMPOS(64)+LEN(1)>BIT_SIZE(64) in intrinsic MVBITS" }
! { dg-output "At line 33 .*" }
!
! Verify that the runtime checks for the MVBITS intrinsic functions
! do not generate false-positives
program check
implicit none
integer, parameter :: bs4 = bit_size (1_4)
integer, parameter :: bs8 = bit_size (1_8)
integer(4), dimension(0:bs4) :: from4, frompos4, len4, to4, topos4
integer(8), dimension(0:bs8) :: from8, frompos8, len8, to8, topos8
integer :: i
from4 = -1
to4 = -1
len4 = [ (i, i=0,bs4) ]
frompos4 = bs4 - len4
topos4 = frompos4
call mvbits (from4, frompos4, len4, to4, topos4)
if (any (to4 /= -1)) stop 1
from8 = -1
to8 = -1
len8 = [ (i, i=0,bs8) ]
frompos8 = bs8 - len8
topos8 = frompos8
call mvbits (from8, frompos8, len8, to8, topos8)
if (any (to8 /= -1)) stop 2
from8 = -1
to8 = -1
len8(0) = 1
! The following line should fail with a runtime error:
call mvbits (from8, frompos8, len8, to8, topos8)
! Should never get here with -fcheck=bits
stop 3
end
! { dg-final { scan-tree-dump-times "_gfortran_runtime_error_at" 15 "original" } }
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