From: Junio C Hamano Date: Mon, 27 Jan 2014 18:44:06 +0000 (-0800) Subject: Merge branch 'mh/retire-ref-fetch-rules' X-Git-Tag: v1.9-rc1~21 X-Git-Url: https://git.lorimer.id.au/gitweb.git/diff_plain/9bb528709878d26ac75bf0cb075cc694acd0d69d?hp=-c Merge branch 'mh/retire-ref-fetch-rules' Code simplification. * mh/retire-ref-fetch-rules: refname_match(): always use the rules in ref_rev_parse_rules --- 9bb528709878d26ac75bf0cb075cc694acd0d69d diff --combined cache.h index c9efe88e9e,aa8ce97f0d..763c961520 --- a/cache.h +++ b/cache.h @@@ -354,7 -354,6 +354,7 @@@ static inline enum object_type object_t #define DB_ENVIRONMENT "GIT_OBJECT_DIRECTORY" #define INDEX_ENVIRONMENT "GIT_INDEX_FILE" #define GRAFT_ENVIRONMENT "GIT_GRAFT_FILE" +#define GIT_SHALLOW_FILE_ENVIRONMENT "GIT_SHALLOW_FILE" #define TEMPLATE_DIR_ENVIRONMENT "GIT_TEMPLATE_DIR" #define CONFIG_ENVIRONMENT "GIT_CONFIG" #define CONFIG_DATA_ENVIRONMENT "GIT_CONFIG_PARAMETERS" @@@ -761,11 -760,11 +761,11 @@@ int daemon_avoid_alias(const char *path int offset_1st_component(const char *path); /* object replacement */ -#define READ_SHA1_FILE_REPLACE 1 +#define LOOKUP_REPLACE_OBJECT 1 extern void *read_sha1_file_extended(const unsigned char *sha1, enum object_type *type, unsigned long *size, unsigned flag); static inline void *read_sha1_file(const unsigned char *sha1, enum object_type *type, unsigned long *size) { - return read_sha1_file_extended(sha1, type, size, READ_SHA1_FILE_REPLACE); + return read_sha1_file_extended(sha1, type, size, LOOKUP_REPLACE_OBJECT); } extern const unsigned char *do_lookup_replace_object(const unsigned char *sha1); static inline const unsigned char *lookup_replace_object(const unsigned char *sha1) @@@ -774,12 -773,6 +774,12 @@@ return sha1; return do_lookup_replace_object(sha1); } +static inline const unsigned char *lookup_replace_object_extended(const unsigned char *sha1, unsigned flag) +{ + if (!(flag & LOOKUP_REPLACE_OBJECT)) + return sha1; + return lookup_replace_object(sha1); +} /* Read and unpack a sha1 file into memory, write memory to a sha1 file */ extern int sha1_object_info(const unsigned char *, unsigned long *); @@@ -894,9 -887,12 +894,12 @@@ extern int dwim_log(const char *str, in extern int interpret_branch_name(const char *str, int len, struct strbuf *); extern int get_sha1_mb(const char *str, unsigned char *sha1); - extern int refname_match(const char *abbrev_name, const char *full_name, const char **rules); - extern const char *ref_rev_parse_rules[]; - #define ref_fetch_rules ref_rev_parse_rules + /* + * Return true iff abbrev_name is a possible abbreviation for + * full_name according to the rules defined by ref_rev_parse_rules in + * refs.c. + */ + extern int refname_match(const char *abbrev_name, const char *full_name); extern int create_symref(const char *ref, const char *refs_heads_master, const char *logmsg); extern int validate_headref(const char *ref); @@@ -1081,7 -1077,6 +1084,7 @@@ struct object_info enum object_type *typep; unsigned long *sizep; unsigned long *disk_sizep; + unsigned char *delta_base_sha1; /* Response */ enum { @@@ -1106,7 -1101,7 +1109,7 @@@ } packed; } u; }; -extern int sha1_object_info_extended(const unsigned char *, struct object_info *); +extern int sha1_object_info_extended(const unsigned char *, struct object_info *, unsigned flags); /* Dumb servers support */ extern int update_server_info(int); @@@ -1244,8 -1239,6 +1247,8 @@@ __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); void packet_trace_identity(const char *prog); diff --combined refs.c index 490b57b881,5a10c25975..fc33ee8ffb --- a/refs.c +++ b/refs.c @@@ -637,7 -637,7 +637,7 @@@ static int do_one_ref(struct ref_entry struct ref_entry *old_current_ref; int retval; - if (prefixcmp(entry->name, data->base)) + if (!starts_with(entry->name, data->base)) return 0; if (!(data->flags & DO_FOR_EACH_INCLUDE_BROKEN) && @@@ -1042,7 -1042,7 +1042,7 @@@ static void read_packed_refs(FILE *f, s if (refname) { last = create_ref_entry(refname, sha1, REF_ISPACKED, 1); if (peeled == PEELED_FULLY || - (peeled == PEELED_TAGS && !prefixcmp(refname, "refs/tags/"))) + (peeled == PEELED_TAGS && starts_with(refname, "refs/tags/"))) last->flag |= REF_KNOWS_PEELED; add_ref(dir, last); continue; @@@ -1376,7 -1376,7 +1376,7 @@@ const char *resolve_ref_unsafe(const ch return NULL; } buffer[len] = 0; - if (!prefixcmp(buffer, "refs/") && + if (starts_with(buffer, "refs/") && !check_refname_format(buffer, 0)) { strcpy(refname_buffer, buffer); refname = refname_buffer; @@@ -1415,7 -1415,7 +1415,7 @@@ /* * Is it a symbolic ref? */ - if (prefixcmp(buffer, "ref:")) { + if (!starts_with(buffer, "ref:")) { /* * Please note that FETCH_HEAD has a second * line containing other data. @@@ -1837,7 -1837,7 +1837,7 @@@ int for_each_glob_ref_in(each_ref_fn fn struct ref_filter filter; int ret; - if (!prefix && prefixcmp(pattern, "refs/")) + if (!prefix && !starts_with(pattern, "refs/")) strbuf_addstr(&real_pattern, "refs/"); else if (prefix) strbuf_addstr(&real_pattern, prefix); @@@ -1874,13 -1874,13 +1874,13 @@@ int for_each_rawref(each_ref_fn fn, voi const char *prettify_refname(const char *name) { return name + ( - !prefixcmp(name, "refs/heads/") ? 11 : - !prefixcmp(name, "refs/tags/") ? 10 : - !prefixcmp(name, "refs/remotes/") ? 13 : + starts_with(name, "refs/heads/") ? 11 : + starts_with(name, "refs/tags/") ? 10 : + starts_with(name, "refs/remotes/") ? 13 : 0); } - const char *ref_rev_parse_rules[] = { + static const char *ref_rev_parse_rules[] = { "%.*s", "refs/%.*s", "refs/tags/%.*s", @@@ -1890,12 -1890,12 +1890,12 @@@ NULL }; - int refname_match(const char *abbrev_name, const char *full_name, const char **rules) + int refname_match(const char *abbrev_name, const char *full_name) { const char **p; const int abbrev_name_len = strlen(abbrev_name); - for (p = rules; *p; p++) { + for (p = ref_rev_parse_rules; *p; p++) { if (!strcmp(full_name, mkpath(*p, abbrev_name_len, abbrev_name))) { return 1; } @@@ -2244,7 -2244,7 +2244,7 @@@ static int pack_if_possible_fn(struct r struct pack_refs_cb_data *cb = cb_data; enum peel_status peel_status; struct ref_entry *packed_entry; - int is_tag_ref = !prefixcmp(entry->name, "refs/tags/"); + int is_tag_ref = starts_with(entry->name, "refs/tags/"); /* ALWAYS pack tags */ if (!(cb->flags & PACK_REFS_ALL) && !is_tag_ref) @@@ -2679,9 -2679,9 +2679,9 @@@ int log_ref_setup(const char *refname, git_snpath(logfile, bufsize, "logs/%s", refname); if (log_all_ref_updates && - (!prefixcmp(refname, "refs/heads/") || - !prefixcmp(refname, "refs/remotes/") || - !prefixcmp(refname, "refs/notes/") || + (starts_with(refname, "refs/heads/") || + starts_with(refname, "refs/remotes/") || + starts_with(refname, "refs/notes/") || !strcmp(refname, "HEAD"))) { if (safe_create_leading_directories(logfile) < 0) return error("unable to create directory for %s", @@@ -2751,7 -2751,7 +2751,7 @@@ static int log_ref_write(const char *re static int is_branch(const char *refname) { - return !strcmp(refname, "HEAD") || !prefixcmp(refname, "refs/heads/"); + return !strcmp(refname, "HEAD") || starts_with(refname, "refs/heads/"); } int write_ref_sha1(struct ref_lock *lock, @@@ -3334,6 -3334,29 +3334,6 @@@ cleanup return ret; } -/* - * generate a format suitable for scanf from a ref_rev_parse_rules - * rule, that is replace the "%.*s" spec with a "%s" spec - */ -static void gen_scanf_fmt(char *scanf_fmt, const char *rule) -{ - char *spec; - - spec = strstr(rule, "%.*s"); - if (!spec || strstr(spec + 4, "%.*s")) - die("invalid rule in ref_rev_parse_rules: %s", rule); - - /* copy all until spec */ - strncpy(scanf_fmt, rule, spec - rule); - scanf_fmt[spec - rule] = '\0'; - /* copy new spec */ - strcat(scanf_fmt, "%s"); - /* copy remaining rule */ - strcat(scanf_fmt, spec + 4); - - return; -} - char *shorten_unambiguous_ref(const char *refname, int strict) { int i; @@@ -3341,29 -3364,23 +3341,29 @@@ static int nr_rules; char *short_name; - /* pre generate scanf formats from ref_rev_parse_rules[] */ if (!nr_rules) { + /* + * Pre-generate scanf formats from ref_rev_parse_rules[]. + * Generate a format suitable for scanf from a + * ref_rev_parse_rules rule by interpolating "%s" at the + * location of the "%.*s". + */ size_t total_len = 0; + size_t offset = 0; /* the rule list is NULL terminated, count them first */ for (nr_rules = 0; ref_rev_parse_rules[nr_rules]; nr_rules++) - /* no +1 because strlen("%s") < strlen("%.*s") */ - total_len += strlen(ref_rev_parse_rules[nr_rules]); + /* -2 for strlen("%.*s") - strlen("%s"); +1 for NUL */ + total_len += strlen(ref_rev_parse_rules[nr_rules]) - 2 + 1; scanf_fmts = xmalloc(nr_rules * sizeof(char *) + total_len); - total_len = 0; + offset = 0; for (i = 0; i < nr_rules; i++) { - scanf_fmts[i] = (char *)&scanf_fmts[nr_rules] - + total_len; - gen_scanf_fmt(scanf_fmts[i], ref_rev_parse_rules[i]); - total_len += strlen(ref_rev_parse_rules[i]); + assert(offset < total_len); + scanf_fmts[i] = (char *)&scanf_fmts[nr_rules] + offset; + offset += snprintf(scanf_fmts[i], total_len - offset, + ref_rev_parse_rules[i], 2, "%s") + 1; } } @@@ -3433,7 -3450,7 +3433,7 @@@ int parse_hide_refs_config(const char * { if (!strcmp("transfer.hiderefs", var) || /* NEEDSWORK: use parse_config_key() once both are merged */ - (!prefixcmp(var, section) && var[strlen(section)] == '.' && + (starts_with(var, section) && var[strlen(section)] == '.' && !strcmp(var + strlen(section), ".hiderefs"))) { char *ref; int len; @@@ -3461,7 -3478,7 +3461,7 @@@ int ref_is_hidden(const char *refname return 0; for_each_string_list_item(item, hide_refs) { int len; - if (prefixcmp(refname, item->string)) + if (!starts_with(refname, item->string)) continue; len = strlen(item->string); if (!refname[len] || refname[len] == '/') diff --combined remote.c index a89efab5b7,94097b906b..e41251ee77 --- a/remote.c +++ b/remote.c @@@ -76,7 -76,7 +76,7 @@@ static const char *alias_url(const cha if (!r->rewrite[i]) continue; for (j = 0; j < r->rewrite[i]->instead_of_nr; j++) { - if (!prefixcmp(url, r->rewrite[i]->instead_of[j].s) && + if (starts_with(url, r->rewrite[i]->instead_of[j].s) && (!longest || longest->len < r->rewrite[i]->instead_of[j].len)) { longest = &(r->rewrite[i]->instead_of[j]); @@@ -239,13 -239,13 +239,13 @@@ static void read_remotes_file(struct re int value_list; char *s, *p; - if (!prefixcmp(buffer, "URL:")) { + if (starts_with(buffer, "URL:")) { value_list = 0; s = buffer + 4; - } else if (!prefixcmp(buffer, "Push:")) { + } else if (starts_with(buffer, "Push:")) { value_list = 1; s = buffer + 5; - } else if (!prefixcmp(buffer, "Pull:")) { + } else if (starts_with(buffer, "Pull:")) { value_list = 2; s = buffer + 5; } else @@@ -337,7 -337,7 +337,7 @@@ static int handle_config(const char *ke const char *subkey; struct remote *remote; struct branch *branch; - if (!prefixcmp(key, "branch.")) { + if (starts_with(key, "branch.")) { name = key + 7; subkey = strrchr(name, '.'); if (!subkey) @@@ -361,7 -361,7 +361,7 @@@ } return 0; } - if (!prefixcmp(key, "url.")) { + if (starts_with(key, "url.")) { struct rewrite *rewrite; name = key + 4; subkey = strrchr(name, '.'); @@@ -380,7 -380,7 +380,7 @@@ } } - if (prefixcmp(key, "remote.")) + if (!starts_with(key, "remote.")) return 0; name = key + 7; @@@ -487,7 -487,7 +487,7 @@@ static void read_config(void current_branch = NULL; head_ref = resolve_ref_unsafe("HEAD", sha1, 0, &flag); if (head_ref && (flag & REF_ISSYMREF) && - !prefixcmp(head_ref, "refs/heads/")) { + starts_with(head_ref, "refs/heads/")) { current_branch = make_branch(head_ref + strlen("refs/heads/"), 0); } @@@ -745,66 -745,35 +745,66 @@@ int for_each_remote(each_remote_fn fn, return result; } -void ref_remove_duplicates(struct ref *ref_map) +static void handle_duplicate(struct ref *ref1, struct ref *ref2) +{ + if (strcmp(ref1->name, ref2->name)) { + if (ref1->fetch_head_status != FETCH_HEAD_IGNORE && + ref2->fetch_head_status != FETCH_HEAD_IGNORE) { + die(_("Cannot fetch both %s and %s to %s"), + ref1->name, ref2->name, ref2->peer_ref->name); + } else if (ref1->fetch_head_status != FETCH_HEAD_IGNORE && + ref2->fetch_head_status == FETCH_HEAD_IGNORE) { + warning(_("%s usually tracks %s, not %s"), + ref2->peer_ref->name, ref2->name, ref1->name); + } else if (ref1->fetch_head_status == FETCH_HEAD_IGNORE && + ref2->fetch_head_status == FETCH_HEAD_IGNORE) { + die(_("%s tracks both %s and %s"), + ref2->peer_ref->name, ref1->name, ref2->name); + } else { + /* + * This last possibility doesn't occur because + * FETCH_HEAD_IGNORE entries always appear at + * the end of the list. + */ + die(_("Internal error")); + } + } + free(ref2->peer_ref); + free(ref2); +} + +struct ref *ref_remove_duplicates(struct ref *ref_map) { struct string_list refs = STRING_LIST_INIT_NODUP; - struct string_list_item *item = NULL; - struct ref *prev = NULL, *next = NULL; - for (; ref_map; prev = ref_map, ref_map = next) { - next = ref_map->next; - if (!ref_map->peer_ref) - continue; + struct ref *retval = NULL; + struct ref **p = &retval; - item = string_list_lookup(&refs, ref_map->peer_ref->name); - if (item) { - if (strcmp(((struct ref *)item->util)->name, - ref_map->name)) - die("%s tracks both %s and %s", - ref_map->peer_ref->name, - ((struct ref *)item->util)->name, - ref_map->name); - prev->next = ref_map->next; - free(ref_map->peer_ref); - free(ref_map); - ref_map = prev; /* skip this; we freed it */ - continue; - } + while (ref_map) { + struct ref *ref = ref_map; + + ref_map = ref_map->next; + ref->next = NULL; - item = string_list_insert(&refs, ref_map->peer_ref->name); - item->util = ref_map; + if (!ref->peer_ref) { + *p = ref; + p = &ref->next; + } else { + struct string_list_item *item = + string_list_insert(&refs, ref->peer_ref->name); + + if (item->util) { + /* Entry already existed */ + handle_duplicate((struct ref *)item->util, ref); + } else { + *p = ref; + p = &ref->next; + item->util = ref; + } + } } + string_list_clear(&refs, 0); + return retval; } int remote_has_url(struct remote *remote, const char *url) @@@ -852,12 -821,10 +852,12 @@@ static int match_name_with_pattern(cons return ret; } -static int query_refspecs(struct refspec *refs, int ref_count, struct refspec *query) +int query_refspecs(struct refspec *refs, int ref_count, struct refspec *query) { int i; int find_src = !query->src; + const char *needle = find_src ? query->dst : query->src; + char **result = find_src ? &query->src : &query->dst; if (find_src && !query->dst) return error("query_refspecs: need either src or dst"); @@@ -866,6 -833,8 +866,6 @@@ struct refspec *refspec = &refs[i]; const char *key = find_src ? refspec->dst : refspec->src; const char *value = find_src ? refspec->src : refspec->dst; - const char *needle = find_src ? query->dst : query->src; - char **result = find_src ? &query->src : &query->dst; if (!refspec->dst) continue; @@@ -986,9 -955,9 +986,9 @@@ void sort_ref_list(struct ref **l, int *l = llist_mergesort(*l, ref_list_get_next, ref_list_set_next, cmp); } -static int count_refspec_match(const char *pattern, - struct ref *refs, - struct ref **matched_ref) +int count_refspec_match(const char *pattern, + struct ref *refs, + struct ref **matched_ref) { int patlen = strlen(pattern); struct ref *matched_weak = NULL; @@@ -1000,7 -969,7 +1000,7 @@@ char *name = refs->name; int namelen = strlen(name); - if (!refname_match(pattern, name, ref_rev_parse_rules)) + if (!refname_match(pattern, name)) continue; /* A match is "weak" if it is with refs outside @@@ -1013,8 -982,8 +1013,8 @@@ */ if (namelen != patlen && patlen != namelen - 5 && - prefixcmp(name, "refs/heads/") && - prefixcmp(name, "refs/tags/")) { + !starts_with(name, "refs/heads/") && + !starts_with(name, "refs/tags/")) { /* We want to catch the case where only weak * matches are found and there are multiple * matches, and where more than one strong @@@ -1085,9 -1054,9 +1085,9 @@@ static char *guess_ref(const char *name if (!r) return NULL; - if (!prefixcmp(r, "refs/heads/")) + if (starts_with(r, "refs/heads/")) strbuf_addstr(&buf, "refs/heads/"); - else if (!prefixcmp(r, "refs/tags/")) + else if (starts_with(r, "refs/tags/")) strbuf_addstr(&buf, "refs/tags/"); else return NULL; @@@ -1135,7 -1104,7 +1135,7 @@@ static int match_explicit(struct ref *s dst_value = resolve_ref_unsafe(matched_src->name, sha1, 1, &flag); if (!dst_value || ((flag & REF_ISSYMREF) && - prefixcmp(dst_value, "refs/heads/"))) + !starts_with(dst_value, "refs/heads/"))) die("%s cannot be resolved to branch.", matched_src->name); } @@@ -1224,7 -1193,7 +1224,7 @@@ static char *get_ref_match(const struc * including refs outside refs/heads/ hierarchy, but * that does not make much sense these days. */ - if (!send_mirror && prefixcmp(ref->name, "refs/heads/")) + if (!send_mirror && !starts_with(ref->name, "refs/heads/")) return NULL; name = xstrdup(ref->name); } @@@ -1279,7 -1248,7 +1279,7 @@@ static void add_missing_tags(struct re add_to_tips(&sent_tips, ref->peer_ref->new_sha1); else add_to_tips(&sent_tips, ref->old_sha1); - if (!prefixcmp(ref->name, "refs/tags/")) + if (starts_with(ref->name, "refs/tags/")) string_list_append(&dst_tag, ref->name); } clear_commit_marks_many(sent_tips.nr, sent_tips.tip, TMP_MARK); @@@ -1288,7 -1257,7 +1288,7 @@@ /* Collect tags they do not have. */ for (ref = src; ref; ref = ref->next) { - if (prefixcmp(ref->name, "refs/tags/")) + if (!starts_with(ref->name, "refs/tags/")) continue; /* not a tag */ if (string_list_has_string(&dst_tag, ref->name)) continue; /* they already have it */ @@@ -1512,7 -1481,7 +1512,7 @@@ void set_ref_status_for_push(struct re */ else if (!ref->deletion && !is_null_sha1(ref->old_sha1)) { - if (!prefixcmp(ref->name, "refs/tags/")) + if (starts_with(ref->name, "refs/tags/")) reject_reason = REF_STATUS_REJECT_ALREADY_EXISTS; else if (!has_sha1_file(ref->old_sha1)) reject_reason = REF_STATUS_REJECT_FETCH_FIRST; @@@ -1571,7 -1540,7 +1571,7 @@@ int branch_merge_matches(struct branch { if (!branch || i < 0 || i >= branch->merge_nr) return 0; - return refname_match(branch->merge[i]->src, refname, ref_fetch_rules); + return refname_match(branch->merge[i]->src, refname); } static int ignore_symref_update(const char *refname) @@@ -1584,13 -1553,6 +1584,13 @@@ return (flag & REF_ISSYMREF); } +/* + * Create and return a list of (struct ref) consisting of copies of + * each remote_ref that matches refspec. refspec must be a pattern. + * Fill in the copies' peer_ref to describe the local tracking refs to + * which they map. Omit any references that would map to an existing + * local symbolic ref. + */ static struct ref *get_expanded_map(const struct ref *remote_refs, const struct refspec *refspec) { @@@ -1598,9 -1560,9 +1598,9 @@@ struct ref *ret = NULL; struct ref **tail = &ret; - char *expn_name; - for (ref = remote_refs; ref; ref = ref->next) { + char *expn_name = NULL; + if (strchr(ref->name, '^')) continue; /* a dereference item */ if (match_name_with_pattern(refspec->src, ref->name, @@@ -1609,12 -1571,12 +1609,12 @@@ struct ref *cpy = copy_ref(ref); cpy->peer_ref = alloc_ref(expn_name); - free(expn_name); if (refspec->force) cpy->peer_ref->force = 1; *tail = cpy; tail = &cpy->next; } + free(expn_name); } return ret; @@@ -1624,7 -1586,7 +1624,7 @@@ static const struct ref *find_ref_by_na { const struct ref *ref; for (ref = refs; ref; ref = ref->next) { - if (refname_match(name, ref->name, ref_fetch_rules)) + if (refname_match(name, ref->name)) return ref; } return NULL; @@@ -1645,12 -1607,12 +1645,12 @@@ static struct ref *get_local_ref(const if (!name || name[0] == '\0') return NULL; - if (!prefixcmp(name, "refs/")) + if (starts_with(name, "refs/")) return alloc_ref(name); - if (!prefixcmp(name, "heads/") || - !prefixcmp(name, "tags/") || - !prefixcmp(name, "remotes/")) + if (starts_with(name, "heads/") || + starts_with(name, "tags/") || + starts_with(name, "remotes/")) return alloc_ref_with_prefix("refs/", 5, name); return alloc_ref_with_prefix("refs/heads/", 11, name); @@@ -1685,7 -1647,7 +1685,7 @@@ int get_fetch_map(const struct ref *rem for (rmp = &ref_map; *rmp; ) { if ((*rmp)->peer_ref) { - if (prefixcmp((*rmp)->peer_ref->name, "refs/") || + if (!starts_with((*rmp)->peer_ref->name, "refs/") || check_refname_format((*rmp)->peer_ref->name, 0)) { struct ref *ignore = *rmp; error("* Ignoring funny ref '%s' locally", @@@ -1969,7 -1931,7 +1969,7 @@@ struct ref *guess_remote_head(const str /* Look for another ref that points there */ for (r = refs; r; r = r->next) { if (r != head && - !prefixcmp(r->name, "refs/heads/") && + starts_with(r->name, "refs/heads/") && !hashcmp(r->old_sha1, head->old_sha1)) { *tail = copy_ref(r); tail = &((*tail)->next); @@@ -2121,7 -2083,7 +2121,7 @@@ static void apply_cas(struct push_cas_o /* Find an explicit --