re PR libfortran/34974 (null bytes when reverse-tabbing long records (regression vs. g77))

2008-02-20  Jerry DeLisle  <jvdelisle@gcc.gnu.org>

	PR libfortran/34974
	* gfortran.dg/fmt_t_7.f: New test.

	PR libfortran/35132
	* gfortran.dg/streamio_15.f90: New test.

From-SVN: r132513

gcc/testsuite/ChangeLog

 2008-02-20  Jerry DeLisle  <jvdelisle@gcc.gnu.org>
 
+	PR libfortran/34974
+	* gfortran.dg/fmt_t_7.f: New test.
+
+	PR libfortran/35132
+	* gfortran.dg/streamio_15.f90: New test.
+	
+2008-02-20  Jerry DeLisle  <jvdelisle@gcc.gnu.org>
+
 	PR libfortran/35036
 	* gfortran.dg/fmt_zero_digits.f90: Revise test.
 

gcc/testsuite/gfortran.dg/fmt_t_7.f

+! { dg-do run }
+! PR34974 null bytes when reverse-tabbing long records
+! Test case prpared by Jerry DeLisle <jvdelisle@gcc.gnu.org>
+       program test
+       character(1) :: a, b, c
+       write (10,'(t50000,a,t1,a)') 'b', 'a'
+       close (10)
+       open (10, access="stream")
+       read (10, pos=1) a
+       read (10, pos=50000) b
+       read (10, pos=25474) c
+       close (10, status="delete")
+       if (a /= "a") call abort
+       if (b /= "b") call abort
+       if (c /= " ") call abort
+       end

gcc/testsuite/gfortran.dg/streamio_15.f90

+! { dg-do run }
+! PR35132 Formatted stream I/O write should truncate.
+! Test case adapted from PR by Jerry DeLisle  <jvdelisle@gcc.gnu.org>
+program main
+  implicit none
+  character(len=6) :: c
+  integer :: i
+  open(20,file="foo.txt",form="formatted",access="stream")
+  write(20,'(A)') '123456'
+  write(20,'(A)') 'abcdef'
+  write(20,'(A)') 'qwerty'
+  rewind 20
+  ! Skip over the first line
+  read(20,'(A)') c
+  if (c.ne.'123456') call abort
+  ! Save the position
+  inquire(20,pos=i)
+  if (i.ne.8) call abort
+  ! Read in the complete line...
+  read(20,'(A)') c
+  if (c.ne.'abcdef') call abort
+  ! Write out the first four characters
+  write(20,'(A)',pos=i,advance="no") 'ASDF'
+  ! Fill up the rest of the line.  Here, we know the length.  If we
+  ! don't, things will be a bit more complicated.
+  write(20,'(A)') c(5:6)
+  ! Copy the file to standard output
+  rewind 20
+  c = ""
+  read(20,'(A)') c
+  if (c.ne.'123456') call abort
+  read(20,'(A)') c
+  if (c.ne.'ASDFef') call abort
+  read(20,'(A)', iostat=i) c
+  if (i /= -1) call abort
+  close (20, status="delete")
+end program main