[Bug fortran/52724] Internal read with character(kind=4) data

[tkoenig at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52724

--- Comment #5 from Thomas Koenig <tkoenig at gcc dot gnu.org> 2012-09-24 18:07:17 UTC ---
This patch looks promising:

Index: list_read.c
===================================================================
--- list_read.c (Revision 191649)
+++ list_read.c (Arbeitskopie)
@@ -199,9 +199,16 @@ next_char (st_parameter_dt *dtp)

   if (is_internal_unit (dtp))
     {
-      char cc;
-      length = sread (dtp->u.p.current_unit->s, &cc, 1);
-      c = cc;
+      /* Check for kind=4 internal unit.  */
+      if (dtp->common.unit)
+       length = sread (dtp->u.p.current_unit->s, &c, sizeof (gfc_char4_t));
+      else
+       {
+         char cc;
+         length = sread (dtp->u.p.current_unit->s, &cc, 1);
+         c = cc;
+       }
+
       if (length < 0)
        {
          generate_error (&dtp->common, LIBERROR_OS, NULL);
Index: unix.c
===================================================================
--- unix.c      (Revision 191649)
+++ unix.c      (Arbeitskopie)
@@ -959,7 +959,7 @@ open_internal4 (char *base, int length, gfc_offset
   s->buffer = base;
   s->buffer_offset = offset;

-  s->active = s->file_length = length;
+  s->active = s->file_length = length * sizeof (gfc_char4_t);

   s->st.vptr = &mem4_vtable;