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reflect: skip duplicate check in StructOf when the name of a field is "_"

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Fixes #49110

Change-Id: I32c2cb26cca067a4a676ce4bbc3e51f1e0cdb259
Reviewed-on: https://go-review.googlesource.com/c/go/+/357959
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Dan Kortschak <dan@kortschak.io>
Reviewed-by: Sebastien Binet <s@sbinet.org>
Trust: Cuong Manh Le <cuong.manhle.vn@gmail.com>
This commit is contained in:
zhouguangyuan 2021-10-22 17:00:46 +08:00 committed by Ian Lance Taylor
parent de1abf76fb
commit a3c4ac0fbc
2 changed files with 17 additions and 1 deletions
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2
src/reflect/type.go
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@ -2606,7 +2606,7 @@ func StructOf(fields []StructField) Type {
} }
} }
} }
if _, dup := fset[name]; dup { if _, dup := fset[name]; dup && name != "_" {
panic("reflect.StructOf: duplicate field " + name) panic("reflect.StructOf: duplicate field " + name)
} }
fset[name] = struct{}{} fset[name] = struct{}{}

16
test/fixedbugs/issue49110.go Normal file
View File

@ -0,0 +1,16 @@
// run
// Copyright 2021 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package main
import "reflect"
func main() {
_ = reflect.StructOf([]reflect.StructField{
{Name: "_", PkgPath: "main", Type: reflect.TypeOf(int(0))},
{Name: "_", PkgPath: "main", Type: reflect.TypeOf(int(0))},
})
}