{"id":"f047ba1c8c308b04","repo":"jackc/pgx","slug":"cannot-scan-v-to-net-ip","errorCode":null,"errorMessage":"cannot scan %v to *net.IP","messagePattern":"cannot scan (.+?) to \\*net\\.IP","errorType":"validation","errorClass":null,"httpStatus":null,"severity":"error","filePath":"pgtype/builtin_wrappers.go","lineNumber":553,"sourceCode":"\t}\n\n\tones, _ := w.Mask.Size()\n\n\treturn netip.PrefixFrom(ip, ones), nil\n}\n\ntype netIPWrapper net.IP\n\nfunc (w netIPWrapper) SkipUnderlyingTypePlan() {}\n\nfunc (w *netIPWrapper) ScanNetipPrefix(v netip.Prefix) error {\n\tif !v.IsValid() {\n\t\t*w = nil\n\t\treturn nil\n\t}\n\n\tif v.Addr().BitLen() != v.Bits() {\n\t\treturn fmt.Errorf(\"cannot scan %v to *net.IP\", v)\n\t}\n\n\t*w = netIPWrapper(v.Addr().AsSlice())\n\treturn nil\n}\n\nfunc (w netIPWrapper) NetipPrefixValue() (netip.Prefix, error) {\n\tif w == nil {\n\t\treturn netip.Prefix{}, nil\n\t}\n\n\taddr, ok := netip.AddrFromSlice([]byte(w))\n\tif !ok {\n\t\treturn netip.Prefix{}, errors.New(\"invalid net.IP\")\n\t}\n\n\treturn netip.PrefixFrom(addr, addr.BitLen()), nil\n}","sourceCodeStart":535,"sourceCodeEnd":571,"githubUrl":"https://github.com/jackc/pgx/blob/ec1a0befd22592cffffdeeb0a50311b506372f4c/pgtype/builtin_wrappers.go#L535-L571","documentation":"Error \"cannot scan %v to *net.IP\" thrown in jackc/pgx.","triggerScenarios":"Thrown at pgtype/builtin_wrappers.go:553 when the library encounters an invalid state.","commonSituations":"See trigger scenarios.","solutions":[],"exampleFix":null,"handlingStrategy":null,"validationCode":null,"typeGuard":null,"tryCatchPattern":null,"preventionTips":[],"tags":[],"analyzedSha":"ec1a0befd22592cffffdeeb0a50311b506372f4c","analyzedAt":"2026-08-04T22:52:11.263Z","schemaVersion":2}