Merge branch 'jk/alloc-commit-id'

Make sure all in-core commit objects are assigned a unique number
so that they can be annotated using the commit-slab API.

* jk/alloc-commit-id:
  diff-tree: avoid lookup_unknown_object
  object_as_type: set commit index
  alloc: factor out commit index
  add object_as_type helper for casting objects
  parse_object_buffer: do not set object type
  move setting of object->type to alloc_* functions
  alloc: write out allocator definitions
  alloc.c: remove the alloc_raw_commit_node() function

diff --cc builtin/blame.c
Simple merge

diff --cc builtin/diff-tree.c
Simple merge

diff --cc cache.h
index 8ae30d5a8510d246921de7ea1bf1300ee11dd1bf,42a5e865b588d39836a04b8a022e53ae8ce76d5d..fcb511db70f7703f2b29dbc89dcf703065c823fe
--- 1/cache.h
--- 2/cache.h
+++ b/cache.h
@@@ -1402,8 -1376,19 +1402,9 @@@ extern void *alloc_commit_node(void)
  extern void *alloc_tag_node(void);
  extern void *alloc_object_node(void);
  extern void alloc_report(void);
+ extern unsigned int alloc_commit_index(void);
  
 -/* trace.c */
 -__attribute__((format (printf, 1, 2)))
 -extern void trace_printf(const char *format, ...);
 -__attribute__((format (printf, 2, 3)))
 -extern void trace_argv_printf(const char **argv, const char *format, ...);
 -extern void trace_repo_setup(const char *prefix);
 -extern int trace_want(const char *key);
 -__attribute__((format (printf, 2, 3)))
 -extern void trace_printf_key(const char *key, const char *fmt, ...);
 -extern void trace_strbuf(const char *key, const struct strbuf *buf);
 -
 +/* pkt-line.c */
  void packet_trace_identity(const char *prog);
  
  /* add */

diff --cc commit.c
Simple merge

diff --cc object.c
Simple merge

diff --cc refs.c
Simple merge