size_tpos=ftell(out);if (pos<0)elog(ERROR,"Cannot get position in destination file \"%s\": %s",to_fullpath,strerror(errno));

diff --git a/src/data.c b/src/data.cindex f02e3fd1..ec42813a 100644--- a/src/data.c+++ b/src/data.c@@ -2321,7 +2321,7 @@ copy_pages(const char *to_fullpath, const char *from_fullpath, elog(ERROR, "Cannot seek to end of file position in destination file \"%s\": %s",  to_fullpath, strerror(errno)); {-size_t pos = ftell(out);+long pos = ftell(out);  if (pos < 0) elog(ERROR, "Cannot get position in destination file \"%s\": %s",diff --git a/src/delete.c b/src/delete.cindex 6c70ff81..6335482f 100644--- a/src/delete.c+++ b/src/delete.c@@ -36,7 +36,7 @@ do_delete(InstanceState *instanceState, time_t backup_id) parray   *backup_list,    *delete_list; pgBackup   *target_backup = NULL;-size_tsize_to_delete = 0;+int64size_to_delete = 0; charsize_to_delete_pretty[20];  /* Get complete list of backups */@@ -1027,7 +1027,7 @@ do_delete_status(InstanceState *instanceState, InstanceConfig *instance_config, parray     *backup_list, *delete_list; const char *pretty_status; int         n_deleted = 0, n_found = 0;-size_t      size_to_delete = 0;+int64       size_to_delete = 0; char        size_to_delete_pretty[20]; pgBackup   *backup;

diff --git a/src/delete.c b/src/delete.cindex 6c70ff81..9467c8dc 100644--- a/src/delete.c+++ b/src/delete.c@@ -682,12 +682,11 @@ do_retention_wal(InstanceState *instanceState, bool dry_run)                 * at least one backup and no file should be removed.                 * Unless wal-depth is enabled.                 */-               if ((tlinfo->closest_backup) && instance_config.wal_depth <= 0)+               if ((tlinfo->closest_backup) && instance_config.wal_depth == 0)                        continue;                /* WAL retention keeps this timeline from purge */-               if (instance_config.wal_depth >= 0 && tlinfo->anchor_tli > 0 &&-                       tlinfo->anchor_tli != tlinfo->tli)+               if (tlinfo->anchor_tli > 0 && tlinfo->anchor_tli != tlinfo->tli)                        continue;                /*@@ -701,7 +700,7 @@ do_retention_wal(InstanceState *instanceState, bool dry_run)                 */                if (tlinfo->oldest_backup)                {-                       if (instance_config.wal_depth >= 0 && !(XLogRecPtrIsInvalid(tlinfo->anchor_lsn)))+                       if (!(XLogRecPtrIsInvalid(tlinfo->anchor_lsn)))                        {                                delete_walfiles_in_tli(instanceState, tlinfo->anchor_lsn,                                                                tlinfo, instance_config.xlog_seg_size, dry_run);@@ -714,7 +713,7 @@ do_retention_wal(InstanceState *instanceState, bool dry_run)                }                else                {-                       if (instance_config.wal_depth >= 0 && !(XLogRecPtrIsInvalid(tlinfo->anchor_lsn)))+                       if (!(XLogRecPtrIsInvalid(tlinfo->anchor_lsn)))                                delete_walfiles_in_tli(instanceState, tlinfo->anchor_lsn,                                                                tlinfo, instance_config.xlog_seg_size, dry_run);                        else@@ -942,7 +941,7 @@ delete_walfiles_in_tli(InstanceState *instanceState, XLogRecPtr keep_lsn, timeli                        join_path_components(wal_fullpath, instanceState->instance_wal_subdir_path, wal_file->file.name);                        /* save segment from purging */-                       if (instance_config.wal_depth >= 0 && wal_file->keep)+                       if (wal_file->keep)                        {                                elog(VERBOSE, "Retain WAL segment \"%s\"", wal_fullpath);                                continue;