srl_encoder.c(904) : error C2143: syntax error : missing ';' before 'const'
srl_encoder.c(906) : error C2065: 'compress_flags' : undeclared identifier

srl_dump_data_structure(pTHX_ srl_encoder_t *enc, SV *src, SV *user_header_src)
{
    enc = srl_prepare_encoder(aTHX_ enc);
    const U32 compress_flags= SRL_ENC_HAVE_OPTION(enc, SRL_F_COMPRESS_FLAGS_MASK);