gdb: replace fprint_frame_id

Replace fprint_frame_id with a member function frame_id::to_string
that returns a std::string.  Convert all of the previous users of
fprint_frame_id to use the new member function.  This means that
instead of writing things like this:

  fprintf_unfiltered (file, " id=");
  fprint_frame_id (file, s->id.id);

We can write this:

  fprintf_unfiltered (file, " id=%s", s->id.id.to_string ().c_str ());

There should be no user visible changes after this commit.

gdb/ChangeLog:

	* dummy-frame.c (fprint_dummy_frames): Convert use of
	fprint_frame_id to use frame_id::to_string.
	* frame.c (fprint_field): Delete.
	(fprint_frame_id): Moved to...
	(frame_id::to_string): ...this, rewritten to return a string.
	(fprint_frame): Convert use of fprint_frame_id to use
	frame_id::to_string.
	(compute_frame_id): Likewise.
	(frame_id_p): Likewise.
	(frame_id_eq): Likewise.
	(frame_id_inner): Likewise.
	* frame.h (struct frame_id) <to_string>: New member function.
	(fprint_frame_id): Delete declaration.
	* guile/scm-frame.c (frscm_print_frame_smob): Convert use of
	fprint_frame_id to use frame_id::to_string.
	* python/py-frame.c (frame_object_to_frame_info): Likewise.
	* python/py-unwind.c (unwind_infopy_str): Likewise.
	(pyuw_this_id): Likewise.

1 files changed, 3 insertions, 7 deletions

diff --git a/gdb/python/py-unwind.c b/gdb/python/py-unwind.c
index 4b25c48..c82fa3d 100644
--- a/gdb/python/py-unwind.c
+++ b/gdb/python/py-unwind.c
@@ -163,8 +163,7 @@ unwind_infopy_str (PyObject *self)
   unwind_info_object *unwind_info = (unwind_info_object *) self;
   string_file stb;
 
-  stb.puts ("Frame ID: ");
-  fprint_frame_id (&stb, unwind_info->frame_id);
+  stb.printf ("Frame ID: %s", unwind_info->frame_id.to_string ().c_str ());
   {
     const char *sep = "";
     struct value_print_options opts;
@@ -433,11 +432,8 @@ pyuw_this_id (struct frame_info *this_frame, void **cache_ptr,
 {
   *this_id = ((cached_frame_info *) *cache_ptr)->frame_id;
   if (pyuw_debug >= 1)
-    {
-      fprintf_unfiltered (gdb_stdlog, "%s: frame_id: ", __FUNCTION__);
-      fprint_frame_id (gdb_stdlog, *this_id);
-      fprintf_unfiltered (gdb_stdlog, "\n");
-    }
+    fprintf_unfiltered (gdb_stdlog, "%s: frame_id: %s\n", __FUNCTION__,
+			this_id->to_string ().c_str ());
 }
 
 /* frame_unwind.prev_register.  */