Constify linetables

Linetables no longer change after they are created.  This patch
applies const to them.

Note there is one hack to cast away const in mdebugread.c.  This code
allocates a linetable using 'malloc', then later copies it to the
obstack.  While this could be cleaned up, I chose not to do so because
I have no way of testing it.

Approved-By: Simon Marchi <simon.marchi@efficios.com>

1 files changed, 5 insertions, 3 deletions

diff --git a/gdb/jit.c b/gdb/jit.c
index 938155d..eb2e8ad 100644
--- a/gdb/jit.c
+++ b/gdb/jit.c
@@ -543,9 +543,11 @@ finalize_symtab (struct gdb_symtab *stab, struct objfile *objfile)
       size_t size = ((stab->linetable->nitems - 1)
 		     * sizeof (struct linetable_entry)
 		     + sizeof (struct linetable));
-      filetab->set_linetable ((struct linetable *)
-			      obstack_alloc (&objfile->objfile_obstack, size));
-      memcpy (filetab->linetable (), stab->linetable.get (), size);
+      struct linetable *new_table
+	= (struct linetable *) obstack_alloc (&objfile->objfile_obstack,
+					      size);
+      memcpy (new_table, stab->linetable.get (), size);
+      filetab->set_linetable (new_table);
     }
 
   blockvector_size = (sizeof (struct blockvector)