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e3ce312621
When creating the struct type to hold variables captured by a function literal, we currently reuse the captured variable names as fields. However, there's no particular reason to do this: these struct types aren't visible to users, and it adds extra complexity in making sure fields belong to the correct packages. Further, it turns out we were getting that subtly wrong. If two function literals from different packages capture variables with identical names starting with an uppercase letter (and in the same order and with corresponding identical types) end up in the same function (e.g., due to inlining), then we could end up creating closure struct types that are "different" (i.e., not types.Identical) yet end up with equal LinkString representations (which violates LinkString's contract). The easy fix is to just always use simple, exported, generated field names in the struct. This should allow further struct reuse across packages too, and shrink binary sizes slightly. Fixes #62498. Change-Id: I9c973f5087bf228649a8f74f7dc1522d84a26b51 Reviewed-on: https://go-review.googlesource.com/c/go/+/527135 Auto-Submit: Matthew Dempsky <mdempsky@google.com> Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com> Reviewed-by: Keith Randall <khr@google.com> LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
19 lines
277 B
Go
19 lines
277 B
Go
// Copyright 2023 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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package main
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import "./a"
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func main() {
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a.One(nil)
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Two(nil)
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}
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func Two(L any) {
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func() {
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defer a.F(L)
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}()
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}
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