add assertion failure on verify decoder underflow

diff --git a/src/libFLAC/stream_encoder.c b/src/libFLAC/stream_encoder.c
index 306a621..09dcbc5 100644 (file)
--- a/src/libFLAC/stream_encoder.c
+++ b/src/libFLAC/stream_encoder.c
@@ -2378,7 +2378,11 @@ FLAC__StreamDecoderReadStatus verify_read_callback_(const FLAC__StreamDecoder *d
        }
        else {
                if(encoded_bytes == 0) {
-                       //@@@@ underflow happened, should we do something else here?  is this an assert failure?
+                       /*
+                        * If we get here, a FIFO underflow has occurred,
+                        * which means there is a bug somewhere.
+                        */
+                       FLAC__ASSERT(0);
                        return FLAC__STREAM_DECODER_READ_STATUS_ABORT;
                }
                else if(encoded_bytes < *bytes)