Order of tags 'json' and 'gorm' in struct changes marshalling output #49430
Description
What version of Go are you using (go version)?
$ go version go version go1.17.2 linux/amd64
Does this issue reproduce with the latest release?
Yes
What operating system and processor architecture are you using (go env)?
go env$ go env
GO111MODULE=""
GOARCH="amd64"
GOBIN=""
GOCACHE="/home/emserver/.cache/go-build"
GOENV="/home/emserver/.config/go/env"
GOEXE=""
GOEXPERIMENT=""
GOFLAGS=""
GOHOSTARCH="amd64"
GOHOSTOS="linux"
GOINSECURE=""
GOMODCACHE="/home/emserver/go/pkg/mod"
GONOPROXY=""
GONOSUMDB=""
GOOS="linux"
GOPATH="/home/emserver/go"
GOPRIVATE=""
GOPROXY="https://proxy.golang.org,direct"
GOROOT="/usr/local/go"
GOSUMDB="sum.golang.org"
GOTMPDIR=""
GOTOOLDIR="/usr/local/go/pkg/tool/linux_amd64"
GOVCS=""
GOVERSION="go1.17.2"
GCCGO="gccgo"
AR="ar"
CC="gcc"
CXX="g++"
CGO_ENABLED="1"
GOMOD="/home/emserver/go.mod"
CGO_CFLAGS="-g -O2"
CGO_CPPFLAGS=""
CGO_CXXFLAGS="-g -O2"
CGO_FFLAGS="-g -O2"
CGO_LDFLAGS="-g -O2"
PKG_CONFIG="pkg-config"
GOGCCFLAGS="-fPIC -m64 -pthread -fmessage-length=0 -fdebug-prefix-map=/tmp/go-build2945837827=/tmp/go-build -gno-record-gcc-switches"
What did you do?
package main
import (
"encoding/json"
"fmt"
"gorm.io/gorm"
)
type Test struct {
gorm.Model `json:"-"`
JsonFirst string `json:",omitempty" ; gorm:"size:4"`
GormFirst string `gorm:"size:4" ; json:",omitempty"`
}
func main() {
var t1 Test
s1,_ := json.Marshal(t1)
fmt.Println(string(s1))
}
What did you expect to see?
{}
What did you see instead?
{"GormFirst":""}