! { dg-do run }
! PR17706
! this is a libgfortran test
! output value -0.00 is not standard compliant
! derived from NIST F77 test FM406, with extra bits added.
program pr17706
implicit none
character(len=10) :: s
character(len=10), parameter :: x = "xxxxxxxxxx"
real, parameter :: small = -0.0001
s = x
write (s, '(F4.1)') small
! The plus is optional. We choose not to display it.
if (s .ne. " 0.0") call abort
s = x
write (s, '(SS,F4.1)') small
if (s .ne. " 0.0") call abort
s = x
write (s, '(SP,F4.1)') small
if (s .ne. "+0.0") call abort
end program