Adding upstream version 0.10.5.

Signed-off-by: Daniel Baumann <daniel@debian.org>

internal/decoder/compile_race.go

@@ -0,0 +1,38 @@
+//go:build race
+// +build race
+
+package decoder
+
+import (
+	"sync"
+	"unsafe"
+
+	"github.com/goccy/go-json/internal/runtime"
+)
+
+var decMu sync.RWMutex
+
+func CompileToGetDecoder(typ *runtime.Type) (Decoder, error) {
+	initDecoder()
+	typeptr := uintptr(unsafe.Pointer(typ))
+	if typeptr > typeAddr.MaxTypeAddr {
+		return compileToGetDecoderSlowPath(typeptr, typ)
+	}
+
+	index := (typeptr - typeAddr.BaseTypeAddr) >> typeAddr.AddrShift
+	decMu.RLock()
+	if dec := cachedDecoder[index]; dec != nil {
+		decMu.RUnlock()
+		return dec, nil
+	}
+	decMu.RUnlock()
+
+	dec, err := compileHead(typ, map[uintptr]Decoder{})
+	if err != nil {
+		return nil, err
+	}
+	decMu.Lock()
+	cachedDecoder[index] = dec
+	decMu.Unlock()
+	return dec, nil
+}