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cmd/compile: report the struct type in invalid number of initializer values
Fixes #23732 Disambiguate "too few" or "too many" values in struct initializer messages by reporting the name of the literal. After: issue23732.go:27:3: too few values in Foo literal issue23732.go:34:12: too many values in Bar literal issue23732.go:40:6: too few values in Foo literal issue23732.go:40:12: too many values in Bar literal Change-Id: Ieca37298441d907ac78ffe960c5ab55741a362ef Reviewed-on: https://go-review.googlesource.com/93277 Run-TryBot: Emmanuel Odeke <emm.odeke@gmail.com> Reviewed-by: Matthew Dempsky <mdempsky@google.com>
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@ -3030,7 +3030,7 @@ func typecheckcomplit(n *Node) *Node {
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ls[i] = n1
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if i >= t.NumFields() {
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if !errored {
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yyerror("too many values in struct initializer")
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yyerror("too many values in %v", n)
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errored = true
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}
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continue
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@ -3048,7 +3048,7 @@ func typecheckcomplit(n *Node) *Node {
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ls[i] = n1
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}
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if len(ls) < t.NumFields() {
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yyerror("too few values in struct initializer")
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yyerror("too few values in %v", n)
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}
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} else {
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hash := make(map[string]bool)
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42
test/fixedbugs/issue23732.go
Normal file
42
test/fixedbugs/issue23732.go
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@ -0,0 +1,42 @@
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// errorcheck
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// Copyright 2018 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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// Issue 23732: Give better details about which struct
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// initializer has the wrong number of values.
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package main
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type Foo struct {
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A int
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B int
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C interface{}
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Bar
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}
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type Bar struct {
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A string
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}
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func main() {
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_ = Foo{
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1,
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2,
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3, // ERROR "too few values in Foo literal"
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}
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_ = Foo{
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1,
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2,
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3,
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Bar{"A", "B"}, // ERROR "too many values in Bar literal"
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}
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_ = Foo{
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1,
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2,
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Bar{"A", "B"}, // ERROR "too many values in Bar literal" "too few values in Foo literal"
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}
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}
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