Removing generic overrides from internal/godebug

compiler/natives/src/internal/godebug/godebug.go

@@ -4,84 +4,8 @@
 package godebug
 
 import (
-	"sync"
 	_ "unsafe" // go:linkname
 )
 
-type Setting struct {
-	name string
-	once sync.Once
-
-	// temporarily replacement of atomic.Pointer[string] for go1.20 without generics.
-	value *atomicStringPointer
-}
-
-type atomicStringPointer struct {
-	v *string
-}
-
-func (x *atomicStringPointer) Load() *string     { return x.v }
-func (x *atomicStringPointer) Store(val *string) { x.v = val }
-
-func (s *Setting) Value() string {
-	s.once.Do(func() {
-		v, ok := cache.Load(s.name)
-		if !ok {
-			// temporarily replacement of atomic.Pointer[string] for go1.20 without generics.
-			p := new(atomicStringPointer)
-			p.Store(&empty)
-			v, _ = cache.LoadOrStore(s.name, p)
-		}
-		// temporarily replacement of atomic.Pointer[string] for go1.20 without generics.
-		s.value = v.(*atomicStringPointer)
-	})
-	return *s.value.Load()
-}
-
 //go:linkname setUpdate runtime.godebug_setUpdate
 func setUpdate(update func(def, env string))
-
-func update(def, env string) {
-	updateMu.Lock()
-	defer updateMu.Unlock()
-
-	did := make(map[string]bool)
-	parse(did, env)
-	parse(did, def)
-
-	cache.Range(func(name, v any) bool {
-		if !did[name.(string)] {
-			// temporarily replacement of atomic.Pointer[string] for go1.20 without generics.
-			v.(*atomicStringPointer).Store(&empty)
-		}
-		return true
-	})
-}
-
-func parse(did map[string]bool, s string) {
-	end := len(s)
-	eq := -1
-	for i := end - 1; i >= -1; i-- {
-		if i == -1 || s[i] == ',' {
-			if eq >= 0 {
-				name, value := s[i+1:eq], s[eq+1:end]
-				if !did[name] {
-					did[name] = true
-					v, ok := cache.Load(name)
-					if !ok {
-						// temporarily replacement of atomic.Pointer[string] for go1.20 without generics.
-						p := new(atomicStringPointer)
-						p.Store(&empty)
-						v, _ = cache.LoadOrStore(name, p)
-					}
-					// temporarily replacement of atomic.Pointer[string] for go1.20 without generics.
-					v.(*atomicStringPointer).Store(&value)
-				}
-			}
-			eq = -1
-			end = i
-		} else if s[i] == '=' {
-			eq = i
-		}
-	}
-}