On 21.03.2013 14:18, Philip Martin wrote:
> julianf...@apache.org writes:
>
>> Author: julianfoad
>> Date: Wed Mar 20 21:14:59 2013
>> New Revision: 1459058
>> --- subversion/trunk/subversion/include/private/svn_dep_compat.h (original)
>> +++ subversion/trunk/subversion/include/private/svn_dep_compat.h Wed Mar 20
>> 21:14:59 2013
>> @@ -62,6 +62,15 @@ extern "C" {
>> #define apr_array_clear(arr) (arr)->nelts = 0
>> #endif
>>
>> +/**
>> + * If we don't have a recent enough APR, emulate the behavior of the
>> + * apr_hash_clear() API.
>> + */
>> +#if !APR_VERSION_AT_LEAST(1,3,0)
>> +void svn_hash__clear(struct apr_hash_t *ht);
>> +#define apr_hash_clear(ht) svn_hash__clear(ht)
>> +#endif
>> +
>> #if !APR_VERSION_AT_LEAST(1,0,0)
>> #define APR_UINT64_C(val) UINT64_C(val)
>> #define APR_FPROT_OS_DEFAULT APR_OS_DEFAULT
>> --- subversion/trunk/subversion/libsvn_subr/hash.c (original)
>> +++ subversion/trunk/subversion/libsvn_subr/hash.c Wed Mar 20 21:14:59 2013
>> @@ -508,8 +508,8 @@ svn_hash_from_cstring_keys(apr_hash_t **
>> }
>>
>>
>> -svn_error_t *
>> -svn_hash__clear(apr_hash_t *hash, apr_pool_t *pool)
>> +void
>> +svn_hash__clear(apr_hash_t *hash)
>> {
>> #if APR_VERSION_AT_LEAST(1, 3, 0)
>> apr_hash_clear(hash);
>> @@ -518,13 +518,12 @@ svn_hash__clear(apr_hash_t *hash, apr_po
>> const void *key;
>> apr_ssize_t klen;
>>
>> - for (hi = apr_hash_first(pool, hash); hi; hi = apr_hash_next(hi))
>> + for (hi = apr_hash_first(NULL, hash); hi; hi = apr_hash_next(hi))
>> {
>> apr_hash_this(hi, &key, &klen, NULL);
>> apr_hash_set(hash, key, klen, NULL);
>> }
>> #endif
>> - return SVN_NO_ERROR;
>> }
>>
> The declaration of svn_hash__clear is only present for old APR while the
> definition is always visible. I get this warning:
>
> ../src2/subversion/libsvn_subr/hash.c:512:1: warning: no previous prototype
> for 'svn_hash__clear' [-Wmissing-prototypes]
>
> We could fix it by moving the declaration outside the #if making
> svn_hash__clear always available. Or we could wrap the definition in a
> #if (dropping the call to apr_hash_clear) so it is only available when
> the declaration is available.
>
> Which is the best solution?
Given that this is an internal API and not subject to compatibility
across patch releases, I think we can safely make the implementation
conditional on the same predicate.
-- Brane
--
Branko Čibej
Director of Subversion | WANdisco | www.wandisco.com
