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, 1 insertions, 2 deletions

diff --git a/gdb/dummy-frame.c b/gdb/dummy-frame.c
index 6bbcbba..155dec3 100644
--- a/gdb/dummy-frame.c
+++ b/gdb/dummy-frame.c
@@ -408,8 +408,7 @@ fprint_dummy_frames (struct ui_file *file)
     {
       gdb_print_host_address (s, file);
       fprintf_unfiltered (file, ":");
-      fprintf_unfiltered (file, " id=");
-      fprint_frame_id (file, s->id.id);
+      fprintf_unfiltered (file, " id=%s", s->id.id.to_string ().c_str ());
       fprintf_unfiltered (file, ", ptid=%s",
 			  target_pid_to_str (s->id.thread->ptid).c_str ());
       fprintf_unfiltered (file, "\n");