[PATCH v5 0/4] Don't lazy-fetch commits when parsing them

Thanks everyone for taking a look. Here's a reroll with safer path handling.

Jonathan Tan (4):
  object-file: remove OBJECT_INFO_IGNORE_LOOSE
  object-file: refactor map_loose_object_1()
  object-file: emit corruption errors when detected
  commit: don't lazy-fetch commits

 commit.c       |  15 ++++++-
 object-file.c  | 108 ++++++++++++++++++++++++-------------------------
 object-store.h |   7 ++--
 3 files changed, 69 insertions(+), 61 deletions(-)

Range-diff against v4:
1:  be0b08cac2 = 1:  be0b08cac2 object-file: remove OBJECT_INFO_IGNORE_LOOSE
2:  4b2fb68743 = 2:  4b2fb68743 object-file: refactor map_loose_object_1()
3:  07d28db92c ! 3:  a229ea0b11 object-file: emit corruption errors when detected
    @@ object-file.c: static int loose_object_info(struct repository *r,
      	int status = 0;
     +	int fd;
      	unsigned long mapsize;
    -+	const char *path;
    ++	const char *path = NULL;
      	void *map;
      	git_zstream stream;
      	char hdr[MAX_HEADER_LEN];
    @@ object-file.c: static int loose_object_info(struct repository *r,
     +	fd = open_loose_object(r, oid, &path);
     +	if (fd < 0) {
     +		if (errno != ENOENT)
    -+			error_errno(_("unable to open loose object %s"), path);
    ++			error_errno(_("unable to open loose object %s"), oid_to_hex(oid));
     +		return -1;
     +	}
     +	map = map_fd(fd, path, &mapsize);
    @@ object-file.c: static int loose_object_info(struct repository *r,
      		break;
      	}
      
    -+	if (status && (flags & OBJECT_INFO_DIE_IF_CORRUPT))
    ++	if (status && path && (flags & OBJECT_INFO_DIE_IF_CORRUPT))
     +		die(_("loose object %s (stored in %s) is corrupt"),
     +		    oid_to_hex(oid), path);
     +
4:  1a0cd5b244 = 4:  b54972118a commit: don't lazy-fetch commits