mapassign_faststr: panic: runtime error: invalid memory address or nil pointer dereference #282
Description
Hey. GLHF ^_^
go version go1.17 linux/amd64
My case:
package main
import (
"github.com/goccy/go-json"
)
var J = []byte(`{
"a": {},
"b": {},
"c": {},
"d": {},
"e": {},
"f": {},
"g": {},
"h": {
"m": "1"
},
"i": {}
}`)
type T0 map[string]T2
type T2 struct {
F0 string `json:"m"`
F1 T3
}
type T3 struct {
F0 string
F1 T4
}
type T4 struct {
F0 string
F1 string
F2 string
F3 string
F4 string
F5 string
F6 int
}
func main() {
json.Unmarshal(J, &T0{})
}Out:
panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x1 pc=0x411213]
goroutine 1 [running]:
github.com/goccy/go-json/internal/decoder.(*mapDecoder).mapassign(0xc0000b6120, 0xc0000e6200, 0x0, 0x1, 0xc00009e430)
/home/go/pkg/mod/github.com/goccy/go-json@v0.7.7/internal/decoder/map.go:49 +0x3c
github.com/goccy/go-json/internal/decoder.(*mapDecoder).Decode(0xc0000b6120, 0xc0000e6200, 0xc0000a0150, 0x5703c0, 0xc0000b4028)
/home/go/pkg/mod/github.com/goccy/go-json@v0.7.7/internal/decoder/map.go:161 +0x550
github.com/goccy/go-json.unmarshal({0x5703c0, 0xc00009af70, 0x405759}, {0x4b7f80, 0xc0000b4028}, {0x0, 0x0, 0x4ba380})
/home/go/pkg/mod/github.com/goccy/go-json@v0.7.7/decode.go:47 +0x187
github.com/goccy/go-json.Unmarshal(...)
/home/go/pkg/mod/github.com/goccy/go-json@v0.7.7/json.go:276
main.main()
oops/main.go:44 +0x79
exit status 2