code review 12895043: runtime: make SetFinalizer(x, f) accept any f for which...

src/pkg/runtime/runtime.h

 // Copyright 2009 The Go Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
 /*
  * basic types
  */
 typedef signed char             int8;
 typedef unsigned char           uint8;
 typedef signed short            int16;
@@ skipping 792 matching lines @@
 MCache* runtime·allocmcache(void);
 void    runtime·freemcache(MCache*);
 void    runtime·mallocinit(void);
 void    runtime·mprofinit(void);
 bool    runtime·ifaceeq_c(Iface, Iface);
 bool    runtime·efaceeq_c(Eface, Eface);
 uintptr runtime·ifacehash(Iface, uintptr);
 uintptr runtime·efacehash(Eface, uintptr);
 void*   runtime·malloc(uintptr size);
 void    runtime·free(void *v);
-bool    runtime·addfinalizer(void*, FuncVal *fn, uintptr, void*);
 void    runtime·runpanic(Panic*);
 uintptr runtime·getcallersp(void*);
 int32   runtime·mcount(void);
 int32   runtime·gcount(void);
 void    runtime·mcall(void(*)(G*));
 uint32  runtime·fastrand1(void);
 void    runtime·rewindmorestack(Gobuf*);
 int32   runtime·timediv(int64, int32, int32*);
 
 void runtime·setmg(M*, G*);
@@ skipping 215 matching lines @@
 bool    runtime·mapiterkey(struct hash_iter*, void*);
 Hmap*   runtime·makemap_c(MapType*, int64);
 
 Hchan*  runtime·makechan_c(ChanType*, int64);
 void    runtime·chansend(ChanType*, Hchan*, byte*, bool*, void*);
 void    runtime·chanrecv(ChanType*, Hchan*, byte*, bool*, bool*);
 bool    runtime·showframe(Func*, G*);
 void    runtime·printcreatedby(G*);
 
 void    runtime·ifaceE2I(InterfaceType*, Eface, Iface*);
-
+bool    runtime·ifaceE2I2(InterfaceType*, Eface, Iface*);
 uintptr runtime·memlimit(void);
 
 // float.c
 extern float64 runtime·nan;
 extern float64 runtime·posinf;
 extern float64 runtime·neginf;
 extern uint64 ·nan;
 extern uint64 ·posinf;
 extern uint64 ·neginf;
 #define ISNAN(f) ((f) != (f))
 
 enum
 {
         UseSpanType = 1,
 };