fix bug where gcc gets shifting wrong

diff --git a/src/libFLAC/bitbuffer.c b/src/libFLAC/bitbuffer.c
index dff03ca..6ec34c9 100644 (file)
--- a/src/libFLAC/bitbuffer.c
+++ b/src/libFLAC/bitbuffer.c
@@ -277,7 +277,8 @@ bool FLAC__bitbuffer_write_raw_uint32(FLAC__BitBuffer *bb, uint32 val, unsigned
                return true;
        if(!bitbuffer_ensure_size_(bb, bits))
                return false;
-       val &= (~(0xffffffffu << bits)); /* zero-out unused bits */
+       if(bits < 32) /* @@@ gcc seems to require this because the following line causes incorrect results when bits==32; investigate */
+               val &= (~(0xffffffff << bits)); /* zero-out unused bits */
        bb->total_bits += bits;
        while(bits > 0) {
                n = 8 - bb->bits;