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Fix assign nil slice value

This commit is contained in:
Masaaki Goshima 2021-08-13 15:49:53 +09:00
parent 14f03c1e6d
commit bf35de8f91
1 changed files with 9 additions and 2 deletions
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11
internal/decoder/slice.go
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@ -9,6 +9,13 @@ import (
"github.com/goccy/go-json/internal/runtime" "github.com/goccy/go-json/internal/runtime"
) )
var (
sliceType = runtime.Type2RType(
reflect.TypeOf((*sliceHeader)(nil)).Elem(),
)
nilSlice = unsafe.Pointer(&sliceHeader{})
)
type sliceDecoder struct { type sliceDecoder struct {
elemType *runtime.Type elemType *runtime.Type
isElemPointerType bool isElemPointerType bool
@ -107,7 +114,7 @@ func (d *sliceDecoder) DecodeStream(s *Stream, depth int64, p unsafe.Pointer) er
if err := nullBytes(s); err != nil { if err := nullBytes(s); err != nil {
return err return err
} }
*(*unsafe.Pointer)(p) = nil typedmemmove(sliceType, p, nilSlice)
return nil return nil
case '[': case '[':
s.cursor++ s.cursor++
@ -216,7 +223,7 @@ func (d *sliceDecoder) Decode(ctx *RuntimeContext, cursor, depth int64, p unsafe
return 0, err return 0, err
} }
cursor += 4 cursor += 4
*(*unsafe.Pointer)(p) = nil typedmemmove(sliceType, p, nilSlice)
return cursor, nil return cursor, nil
case '[': case '[':
cursor++ cursor++