CHUNK_sBIT       2887 contrib/libtests/pngvalid.c    me->this.chunk = CHUNK_sBIT;
CHUNK_sBIT       2946 contrib/libtests/pngvalid.c       png_save_uint_32(pm->buffer+4, CHUNK_sBIT);
CHUNK_sBIT       2967 contrib/libtests/pngvalid.c    me->this.chunk = CHUNK_sBIT;