obtained gcc-4.6.4.tar.bz2 from upstream website;upstream

verified gcc-4.6.4.tar.bz2.sig;
imported gcc-4.6.4 source tree from verified upstream tarball.

downloading a git-generated archive based on the 'upstream' tag
should provide you with a source tree that is binary identical
to the one extracted from the above tarball.

if you have obtained the source via the command 'git clone',
however, do note that line-endings of files in your working
directory might differ from line-endings of the respective
files in the upstream repository.

1 files changed, 33 insertions, 0 deletions

diff --git a/gcc/testsuite/gfortran.dg/direct_io_12.f90 b/gcc/testsuite/gfortran.dg/direct_io_12.f90
new file mode 100644
index 000000000..533670272
--- /dev/null
+++ b/gcc/testsuite/gfortran.dg/direct_io_12.f90
@@ -0,0 +1,33 @@
+! { dg-do run }
+! 
+! PR fortran/43551
+!
+! Writes a 672000 byte file with buffering. The writing failed because
+! of a missing lseek.
+
+implicit none
+integer, parameter :: size = 2800 ! << needs to be large enough
+real(8) :: vec1(size,30), dummy(size)
+integer i
+
+CALL RANDOM_NUMBER(vec1)
+
+open(99, file='test.dat', form='unformatted', access='direct', recl=size*8)
+do i = 1, 10
+  write(99,rec=i) vec1(:,i)
+  write(99,rec=i+10) vec1(:,i+10)
+  write(99,rec=i+20) vec1(:,i+20) ! << rec = 30 was written to rec = 21
+end do
+
+do i = 1, 10
+  read(99,rec=i) dummy
+  if (any (dummy /= vec1(:,i))) call abort()
+  read(99,rec=i+10) dummy
+  if (any (dummy /= vec1(:,i+10))) call abort()
+  read(99,rec=i+20) dummy
+  if (any (dummy /= vec1(:,i+20))) call abort() ! << aborted here for rec = 21
+end do
+
+close(99, status='delete')
+end
+