Creating a new stream using ZLib.DeflateStream(compressionlevel) now causes frequent crashes. vala 0.34 used to zero-initialize the z_stream before passing it to deflateInit. vala 0.36 leaves it uninitialized.

void main () {
  var stream = ZLib.DeflateStream (ZLib.Level.BEST_COMPRESSION);
}

vala 0.36 (valac --pkg zlib -C) produces:

void _vala_main (void) {
	z_stream stream;
	deflateInit (&stream, (gint) Z_BEST_COMPRESSION);
	deflateEnd (&stream);
}

vala 0.34 used to write "z_stream stream = {0};".