Index: archive_read_support_format_zip.c
===================================================================
--- archive_read_support_format_zip.c	(revision 184037)
+++ archive_read_support_format_zip.c	(working copy)
@@ -444,7 +444,9 @@
 	archive_entry_set_mtime(entry, zip->mtime, 0);
 	archive_entry_set_ctime(entry, zip->ctime, 0);
 	archive_entry_set_atime(entry, zip->atime, 0);
-	archive_entry_set_size(entry, zip->uncompressed_size);
+	/* Set the size but only if it's meaningful. */
+	if (0 == (zip->flags & ZIP_LENGTH_AT_END))
+		archive_entry_set_size(entry, zip->uncompressed_size);
 
 	zip->entry_bytes_remaining = zip->compressed_size;
 	zip->entry_offset = 0;