Re: [PATCH, libgfortran] PR25039 Comma short circuit read field

[Jerry DeLisle <jvdelisle at verizon dot net>]

Committed to 4.2 with the following shortened test case.  Will commit to 4.1 in 
a few days.

! { dg-do run }
! PR25039 This test checks that commas in input fields for formatted sequential
! reads are interpreted as the read completion.  If no comma is encountered the
! normal field width determines the end of the read.  The test case also checks
! that default blanks are interpreted as NULL in numerics.
! Test case derived from sample provided in PR by Iwan Kawrakow.
! Contributed by Jerry DeLisle  <jvdelisle@gcc.gnu.org>
!
      program pr25039
      implicit none
      integer :: i1, i2, i3
      character(10) :: a1
      open(10, status="scratch")
      write(10,'(a)') "1, 235"
      rewind(10)
      read(10,'(3i2)') i1,i2,i3
      if(i1.ne.1) call abort()
      if(i2.ne.2) call abort()
      if(i3.ne.35) call abort()
      rewind(10)
!     Make sure commas are read in character strings.
      write(10,'(a)') "1234,6789,"
      rewind(10)
      read(10,'(a10)') a1
      if(a1.ne."1234,6789,") call abort()
      end