void modSV( SV *ref ) { SV *sv = SvRV( ref ); unsigned __int64 uv = 9223372036854775809ull; sv_setuv(sv, uv); } #### SV = IV(0x381af90) at 0x381afa0 REFCNT = 1 FLAGS = (PADMY,IOK,pIOK) IV = 123 SV = IV(0x381af90) at 0x381afa0 REFCNT = 1 FLAGS = (PADMY,IOK,pIOK,IsUV) UV = 9223372036854775809