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cmd/compile: a dot expression can not be a struct literal key
Passes toolstash -cmp. Fixes #15311. Change-Id: I1d67f5c9de38e899ab2d6c8986fabd6f197df23a Reviewed-on: https://go-review.googlesource.com/22162 Reviewed-by: David Crawshaw <crawshaw@golang.org>
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@ -3099,7 +3099,12 @@ func typecheckcomplit(n *Node) *Node {
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}
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s := l.Left.Sym
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if s == nil {
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// An OXDOT uses the Sym field to hold
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// the field to the right of the dot,
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// so s will be non-nil, but an OXDOT
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// is never a valid struct literal key.
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if s == nil || l.Left.Op == OXDOT {
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Yyerror("invalid field name %v in struct initializer", l.Left)
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l.Right = typecheck(l.Right, Erv)
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continue
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20
test/fixedbugs/issue15311.go
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20
test/fixedbugs/issue15311.go
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@ -0,0 +1,20 @@
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// errorcheck
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// Copyright 2016 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// The compiler was failing to correctly report an error when a dot
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// expression was used a struct literal key.
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package p
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type T struct {
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toInt map[string]int
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toString map[int]string
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}
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var t = T{
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foo.toInt: make(map[string]int), // ERROR "field name"
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bar.toString: make(map[int]string), // ERROR "field name"
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}
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