1 files changed, 4 insertions, 0 deletions

diff --git a/gzread.c b/gzread.c
index b198a44c..bbabf522 100644
--- a/gzread.c
+++ b/gzread.c
@@ -267,6 +267,10 @@ local int gz_fetch(gz_statep state) {
             strm->next_out = state->out;
             if (gz_decomp(state) == -1)
                 return -1;
+            break;
+        default:
+            gz_error(state, Z_STREAM_ERROR, "state corrupt");
+            return -1;
         }
     } while (state->x.have == 0 && (!state->eof || strm->avail_in));
     return 0;