Remove make_cleanup_regcache_xfree

This removes make_cleanup_regcache_xfree in favor of using
std::unique_ptr as the return type of frame_save_as_regcache.

gdb/ChangeLog
2017-09-25  Tom Tromey  <tom@tromey.com>

	* spu-tdep.c (spu2ppu_sniffer): Update.
	* regcache.h (make_cleanup_regcache_xfree): Don't declare.
	* regcache.c (do_regcache_xfree, make_cleanup_regcache_xfree):
	Remove.
	* ppc-linux-tdep.c (ppu2spu_sniffer): Update.
	* mi/mi-main.c (mi_cmd_data_list_changed_registers): Update.
	* frame.h (frame_save_as_regcache): Return std::unique_ptr.
	* frame.c (frame_save_as_regcache): Return std::unique_ptr.
	(frame_pop): Update.

1 files changed, 4 insertions, 5 deletions

diff --git a/gdb/ppc-linux-tdep.c b/gdb/ppc-linux-tdep.c
index 2faee42..5f313f8 100644
--- a/gdb/ppc-linux-tdep.c
+++ b/gdb/ppc-linux-tdep.c
@@ -1363,13 +1363,12 @@ ppu2spu_sniffer (const struct frame_unwind *self,
 	    = FRAME_OBSTACK_CALLOC (1, struct ppu2spu_cache);
 
 	  struct address_space *aspace = get_frame_address_space (this_frame);
-	  struct regcache *regcache = new regcache (data.gdbarch, aspace);
-	  struct cleanup *cleanups = make_cleanup_regcache_xfree (regcache);
-	  regcache_save (regcache, ppu2spu_unwind_register, &data);
-	  discard_cleanups (cleanups);
+	  std::unique_ptr<struct regcache> regcache
+	    (new struct regcache (data.gdbarch, aspace));
+	  regcache_save (regcache.get (), ppu2spu_unwind_register, &data);
 
 	  cache->frame_id = frame_id_build (base, func);
-	  cache->regcache = regcache;
+	  cache->regcache = regcache.release ();
 	  *this_prologue_cache = cache;
 	  return 1;
 	}