Fix db.Find bug (#23115) (#23119)

Backport #23115

Caused by #20821 

Fix #23110

models/db/list.go

@@ -134,7 +134,7 @@ func Find[T any](ctx context.Context, opts FindOptions, objects *[]T) error {
 	if !opts.IsListAll() {
 		sess.Limit(opts.GetSkipTake())
 	}
-	return sess.Find(&objects)
+	return sess.Find(objects)
 }
 
 // Count represents a common count function which accept an options interface
@@ -148,5 +148,5 @@ func FindAndCount[T any](ctx context.Context, opts FindOptions, objects *[]T) (i
 	if !opts.IsListAll() {
 		sess.Limit(opts.GetSkipTake())
 	}
-	return sess.FindAndCount(&objects)
+	return sess.FindAndCount(objects)
 }

models/db/list_test.go

@@ -0,0 +1,48 @@
+// Copyright 2023 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package db_test
+
+import (
+	"testing"
+
+	"code.gitea.io/gitea/models/db"
+	repo_model "code.gitea.io/gitea/models/repo"
+	"code.gitea.io/gitea/models/unittest"
+
+	"github.com/stretchr/testify/assert"
+	"xorm.io/builder"
+)
+
+type mockListOptions struct {
+	db.ListOptions
+}
+
+func (opts *mockListOptions) IsListAll() bool {
+	return true
+}
+
+func (opts *mockListOptions) ToConds() builder.Cond {
+	return builder.NewCond()
+}
+
+func TestFind(t *testing.T) {
+	assert.NoError(t, unittest.PrepareTestDatabase())
+	xe := unittest.GetXORMEngine()
+	assert.NoError(t, xe.Sync(&repo_model.RepoUnit{}))
+
+	opts := mockListOptions{}
+	var repoUnits []repo_model.RepoUnit
+	err := db.Find(db.DefaultContext, &opts, &repoUnits)
+	assert.NoError(t, err)
+	assert.EqualValues(t, 83, len(repoUnits))
+
+	cnt, err := db.Count(db.DefaultContext, &opts, new(repo_model.RepoUnit))
+	assert.NoError(t, err)
+	assert.EqualValues(t, 83, cnt)
+
+	repoUnits = make([]repo_model.RepoUnit, 0, 10)
+	newCnt, err := db.FindAndCount(db.DefaultContext, &opts, &repoUnits)
+	assert.NoError(t, err)
+	assert.EqualValues(t, cnt, newCnt)
+}