1 files changed, 2 insertions, 3 deletions

diff --git a/archival/libarchive/decompress_gunzip.c b/archival/libarchive/decompress_gunzip.c
index 1360abef7..7b6f45934 100644
--- a/archival/libarchive/decompress_gunzip.c
+++ b/archival/libarchive/decompress_gunzip.c
@@ -1118,9 +1118,8 @@ static int check_header_gzip(STATE_PARAM transformer_state_t *xstate)
                         uint8_t os_flags_UNUSED;
                 } PACKED formatted;
         } header;
-        struct BUG_header {
-                char BUG_header[sizeof(header) == 8 ? 1 : -1];
-        };
+
+        BUILD_BUG_ON(sizeof(header) != 8);
 
         /*
          * Rewind bytebuffer. We use the beginning because the header has 8