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packed-backend: remove stub BUG(...) functions

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Remove the stub BUG(...) functions previously used by the "struct
ref_storage_be refs_be_packed" backend.

We never call any functions in the packed backend by using it as a
"normal" primary ref store, instead we'll always initialize a "files"
backend ref-store.

It will then via the "packed_ref_store" member of "struct
files_ref_store" call selected functions in the "packed" backend, and
we'll in addition call others via wrappers in refs.c.

So while these would arguably give us *slightly* more meaningful error
messages we'll NULL the missing members in the initializer anyway, so
we'll reliably get a segfault if we're ever changing the backend and
having it call something it doesn't have.

So there's no need for this verbose boilerplate, and as shown in a
subsequent commit it might even lead to some confusion about the
packed backend being a "real" backend. Let's make it clear that it's
not.

As an aside, this also fixes a warning emitted by SunCC in at least
versions 12.5 and 12.6 of Oracle Developer Studio:

    "refs/packed-backend.c", line 1599: warning: Function has no return statement : packed_create_symref
    "refs/packed-backend.c", line 1606: warning: Function has no return statement : packed_rename_ref)
    "refs/packed-backend.c", line 1613: warning: Function has no return statement : packed_copy_ref
    "refs/packed-backend.c", line 1648: warning: Function has no return statement : packed_create_reflog

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Ævar Arnfjörð Bjarmason 2022-03-17 18:27:18 +01:00 committed by Junio C Hamano
parent 501036492b
commit ca40893a41
1 changed files with 9 additions and 79 deletions
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88
refs/packed-backend.c
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@ -1591,81 +1591,11 @@ static int packed_pack_refs(struct ref_store *ref_store, unsigned int flags)
return 0;
}
static int packed_create_symref(struct ref_store *ref_store,
const char *refname, const char *target,
const char *logmsg)
{
BUG("packed reference store does not support symrefs");
}
static int packed_rename_ref(struct ref_store *ref_store,
const char *oldrefname, const char *newrefname,
const char *logmsg)
{
BUG("packed reference store does not support renaming references");
}
static int packed_copy_ref(struct ref_store *ref_store,
const char *oldrefname, const char *newrefname,
const char *logmsg)
{
BUG("packed reference store does not support copying references");
}
static struct ref_iterator *packed_reflog_iterator_begin(struct ref_store *ref_store)
{
return empty_ref_iterator_begin();
}
static int packed_for_each_reflog_ent(struct ref_store *ref_store,
const char *refname,
each_reflog_ent_fn fn, void *cb_data)
{
BUG("packed reference store does not support reflogs");
return 0;
}
static int packed_for_each_reflog_ent_reverse(struct ref_store *ref_store,
const char *refname,
each_reflog_ent_fn fn,
void *cb_data)
{
BUG("packed reference store does not support reflogs");
return 0;
}
static int packed_reflog_exists(struct ref_store *ref_store,
const char *refname)
{
BUG("packed reference store does not support reflogs");
return 0;
}
static int packed_create_reflog(struct ref_store *ref_store,
const char *refname, struct strbuf *err)
{
BUG("packed reference store does not support reflogs");
}
static int packed_delete_reflog(struct ref_store *ref_store,
const char *refname)
{
BUG("packed reference store does not support reflogs");
return 0;
}
static int packed_reflog_expire(struct ref_store *ref_store,
const char *refname,
unsigned int flags,
reflog_expiry_prepare_fn prepare_fn,
reflog_expiry_should_prune_fn should_prune_fn,
reflog_expiry_cleanup_fn cleanup_fn,
void *policy_cb_data)
{
BUG("packed reference store does not support reflogs");
return 0;
}
struct ref_storage_be refs_be_packed = {
.next = NULL,
.name = "packed",
@ -1677,20 +1607,20 @@ struct ref_storage_be refs_be_packed = {
.initial_transaction_commit = packed_initial_transaction_commit,
.pack_refs = packed_pack_refs,
.create_symref = packed_create_symref,
.create_symref = NULL,
.delete_refs = packed_delete_refs,
.rename_ref = packed_rename_ref,
.copy_ref = packed_copy_ref,
.rename_ref = NULL,
.copy_ref = NULL,
.iterator_begin = packed_ref_iterator_begin,
.read_raw_ref = packed_read_raw_ref,
.read_symbolic_ref = NULL,
.reflog_iterator_begin = packed_reflog_iterator_begin,
.for_each_reflog_ent = packed_for_each_reflog_ent,
.for_each_reflog_ent_reverse = packed_for_each_reflog_ent_reverse,
.reflog_exists = packed_reflog_exists,
.create_reflog = packed_create_reflog,
.delete_reflog = packed_delete_reflog,
.reflog_expire = packed_reflog_expire
.for_each_reflog_ent = NULL,
.for_each_reflog_ent_reverse = NULL,
.reflog_exists = NULL,
.create_reflog = NULL,
.delete_reflog = NULL,
.reflog_expire = NULL,
};