Standardize the printf format for st_size

Existing code used various inconsistent ways to printf struct stat's
st_size member.  The type of that is off_t, which is in most cases a
signed 64-bit integer, so use the long long int format for it.

src/backend/access/transam/twophase.c

@@ -1243,10 +1243,10 @@ ReadTwoPhaseFile(TransactionId xid, bool missing_ok)
 		stat.st_size > MaxAllocSize)
 		ereport(ERROR,
 				(errcode(ERRCODE_DATA_CORRUPTED),
-				 errmsg_plural("incorrect size of file \"%s\": %zu byte",
-							   "incorrect size of file \"%s\": %zu bytes",
-							   (Size) stat.st_size, path,
-							   (Size) stat.st_size)));
+				 errmsg_plural("incorrect size of file \"%s\": %lld byte",
+							   "incorrect size of file \"%s\": %lld bytes",
+							   (long long int) stat.st_size, path,
+							   (long long int) stat.st_size)));
 
 	crc_offset = stat.st_size - sizeof(pg_crc32c);
 	if (crc_offset != MAXALIGN(crc_offset))
@@ -1270,8 +1270,8 @@ ReadTwoPhaseFile(TransactionId xid, bool missing_ok)
 					 errmsg("could not read file \"%s\": %m", path)));
 		else
 			ereport(ERROR,
-					(errmsg("could not read file \"%s\": read %d of %zu",
-							path, r, (Size) stat.st_size)));
+					(errmsg("could not read file \"%s\": read %d of %lld",
+							path, r, (long long int) stat.st_size)));
 	}
 
 	pgstat_report_wait_end();

src/backend/access/transam/xlogarchive.c

@@ -202,10 +202,10 @@ RestoreArchivedFile(char *path, const char *xlogfname,
 				else
 					elevel = FATAL;
 				ereport(elevel,
-						(errmsg("archive file \"%s\" has wrong size: %lu instead of %lu",
+						(errmsg("archive file \"%s\" has wrong size: %lld instead of %lld",
 								xlogfname,
-								(unsigned long) stat_buf.st_size,
-								(unsigned long) expectedSize)));
+								(long long int) stat_buf.st_size,
+								(long long int) expectedSize)));
 				return false;
 			}
 			else

src/bin/pg_basebackup/pg_receivewal.c

@@ -269,8 +269,8 @@ FindStreamingStart(uint32 *tli)
 
 			if (statbuf.st_size != WalSegSz)
 			{
-				pg_log_warning("segment file \"%s\" has incorrect size %d, skipping",
-							   dirent->d_name, (int) statbuf.st_size);
+				pg_log_warning("segment file \"%s\" has incorrect size %lld, skipping",
+							   dirent->d_name, (long long int) statbuf.st_size);
 				continue;
 			}
 		}

src/bin/pg_verifybackup/pg_verifybackup.c

@@ -411,8 +411,8 @@ parse_manifest_file(char *manifest_path, manifest_files_hash **ht_p,
 			report_fatal_error("could not read file \"%s\": %m",
 							   manifest_path);
 		else
-			report_fatal_error("could not read file \"%s\": read %d of %zu",
-							   manifest_path, rc, (size_t) statbuf.st_size);
+			report_fatal_error("could not read file \"%s\": read %d of %lld",
+							   manifest_path, rc, (long long int) statbuf.st_size);
 	}
 
 	/* Close the manifest file. */
@@ -638,8 +638,8 @@ verify_backup_file(verifier_context *context, char *relpath, char *fullpath)
 	if (m->size != sb.st_size)
 	{
 		report_backup_error(context,
-							"\"%s\" has size %zu on disk but size %zu in the manifest",
-							relpath, (size_t) sb.st_size, m->size);
+							"\"%s\" has size %lld on disk but size %zu in the manifest",
+							relpath, (long long int) sb.st_size, m->size);
 		m->bad = true;
 	}
 

src/fe_utils/archive.c

@@ -71,9 +71,9 @@ RestoreArchivedFile(const char *path, const char *xlogfname,
 		{
 			if (expectedSize > 0 && stat_buf.st_size != expectedSize)
 			{
-				pg_log_fatal("unexpected file size for \"%s\": %lu instead of %lu",
-							 xlogfname, (unsigned long) stat_buf.st_size,
-							 (unsigned long) expectedSize);
+				pg_log_fatal("unexpected file size for \"%s\": %lld instead of %lld",
+							 xlogfname, (long long int) stat_buf.st_size,
+							 (long long int) expectedSize);
 				exit(1);
 			}
 			else