[asterisk-users] Bug in ast_frame_adjust_volume in 12.2.0?

[Richard Kenner]

I'm getting a SIGSEGV at ast_slinear_saturated_multiply at the line:

	351             res = (int) *input * *value;

It's called from ast_frame_adjust_volume.

The frame looks like:

(gdb) print *f
$6 = {frametype = AST_FRAME_VOICE, subclass = {integer = 100021, format = {
      id = AST_FORMAT_SLINEAR16, fattr = {format_attr = {
          0 <repeats 64 times>}, rtp_marker_bit = 0 '\000'}}}, datalen = 0, 
  samples = 320, mallocd = 1, mallocd_hdr_len = 1076, offset = 64, 
  src = 0x51623b0 "func_jitterbuffer interpolation", data = {ptr = 0x0, 
    uint32 = 0, pad = "\000\000\000\000\000\000\000"}, delivery = {
    tv_sec = 1436290187, tv_usec = 304285}, frame_list = {next = 0x0}, 
  flags = 0, ts = 0, len = 0, seqno = 0}

so datalen is 0 and samples nonzero.  ast_frame_adjust_volume, however,
iterates over samples, not datalen.  Is that correct?

What does it mean to have a packet with a zero datalen anyway?