1 files changed, 55 insertions, 0 deletions
diff --git a/gcc/testsuite/gfortran.dg/direct_io_11.f90 b/gcc/testsuite/gfortran.dg/direct_io_11.f90
new file mode 100644
index 000000000..a2b8afc35
--- /dev/null
+++ b/gcc/testsuite/gfortran.dg/direct_io_11.f90
@@ -0,0 +1,55 @@
+! { dg-do run }
+! PR42090 Problems reading partial records in formatted direct access files
+! Test case from PR, prepared by Jerry DeLisle <jvdelisle@gcc.gnu.org>
+program da_good_now
+  implicit none
+  real :: a, b
+
+  a = 1.111111111
+  b = 2.222222222
+
+  open( 10, file = 't.dat', form = 'formatted', access = 'direct', recl = 12 )
+  write( 10, rec = 1, fmt = '( f6.4, /, f6.4 )' ) a, b
+  close( 10 )
+
+  a = -1.0
+  b = -1.0
+
+  open( 10, file = 't.dat', form = 'formatted', access = 'direct', recl = 12 )
+
+  read( 10, rec = 1, fmt = '( f6.4, /, f6.4 )' ) a, b
+  !write( *, '( "partial record 1", t25, 2( f6.4, 1x ) )' ) a, b
+  a = -1.0
+  b = -1.0
+
+  read( 10, rec = 1, fmt = '( f6.4 )' ) a, b
+  !write( *, '( "partial record 2", t25, 2( f6.4, 1x ) )' ) a, b
+  if (a /= 1.1111 .and. b /= 2.2222) call abort()
+  a = -1.0
+  b = -1.0
+
+  read( 10, rec = 1, fmt = '( f12.4, /, f12.4 )' ) a, b
+  !write( *, '( "full record 1", t25, 2( f6.4, 1x ) )' ) a, b
+  if (a /= 1.1111 .and. b /= 2.2222) call abort()
+  a = -1.0
+  b = -1.0
+
+  read( 10, rec = 1, fmt = '( f12.4 )' ) a, b
+  !write( *, '( "full record 2", t25, 2( f6.4, 1x ) )' ) a, b
+  if (a /= 1.1111 .and. b /= 2.2222) call abort()
+  a = -1.0
+  b = -1.0
+
+  read( 10, rec = 1, fmt = '( f6.4, 6x, /, f6.4, 6x )' ) a, b
+  !write( *, '( "full record with 6x", t25, 2( f6.4, 1x ) )' ) a, b
+  if (a /= 1.1111 .and. b /= 2.2222) call abort()
+  a = -1.0
+  b = -1.0
+
+  read( 10, rec = 1, fmt = '( f6.4 )' ) a
+  read( 10, rec = 2, fmt = '( f6.4 )' ) b
+  !write( *, '( "record at a time", t25, 2( f6.4, 1x ) )' ) a, b
+  if (a /= 1.1111 .and. b /= 2.2222) call abort()
+
+  close( 10, status="delete")
+end program da_good_now