HEK* share_hek _((char* sv, I32 len, U32 hash));
Signal_t sighandler _((int sig));
SV** stack_grow _((SV** sp, SV**p, int n));
-int start_subparse _((void));
+int start_subparse _((I32 is_format, U32 flags));
void sub_crush_depth _((CV* cv));
bool sv_2bool _((SV* sv));
CV* sv_2cv _((SV* sv, HV** st, GV** gvp, I32 lref));