-
Notifications
You must be signed in to change notification settings - Fork 17.6k
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
[release-branch.go1.23] go/types, types2: use max(fileVersion, go1.21…
…) if fileVersion present Change the rules for how //go:build "file versions" are applied: instead of considering whether a file version is an upgrade or downgrade from the -lang version, always use max(fileVersion, go1.21). This prevents file versions from downgrading the version below go1.21. Before Go 1.21 the //go:build version did not have the meaning of setting the file's langage version. This fixes an issue that was appearing in GOPATH builds: Go 1.23.0 started providing -lang versions to the compiler in GOPATH mode (among other places) which it wasn't doing before, and it set -lang to the toolchain version (1.23). Because the -lang version was greater than go1.21, language version used to compile the file would be set to the //go:build file version. //go:build file versions below 1.21 could cause files that could previously build to stop building. For example, take a Go file with a //go:build line specifying go1.10. If that file used a 1.18 feature, that use would compile fine with a Go 1.22 toolchain. But it would produce an error when compiling with the 1.23.0 toolchain because it set the language version to 1.10 and disallowed the 1.18 feature. This breaks backwards compatibility: when the build tag was added, it did not have the meaning of restricting the language version. For #68658 Fixes #69094 Change-Id: I6cedda81a55bcccffaa3501eef9e2be6541b6ece Reviewed-on: https://go-review.googlesource.com/c/go/+/607955 LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Robert Griesemer <gri@google.com> (cherry picked from commit aeac0b6) Reviewed-on: https://go-review.googlesource.com/c/go/+/608935
- Loading branch information
Showing
11 changed files
with
174 additions
and
99 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,16 @@ | ||
| // -lang=go1.21 | ||
|
|
||
| // Copyright 2022 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. | ||
|
|
||
| // Check Go language version-specific errors. | ||
|
|
||
| //go:build go1.22 | ||
|
|
||
| package p | ||
|
|
||
| func f() { | ||
| for _ = range /* ok because of upgrade to 1.22 */ 10 { | ||
| } | ||
| } |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,16 @@ | ||
| // -lang=go1.22 | ||
|
|
||
| // Copyright 2024 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. | ||
|
|
||
| // Check Go language version-specific errors. | ||
|
|
||
| //go:build go1.21 | ||
|
|
||
| package p | ||
|
|
||
| func f() { | ||
| for _ = range 10 /* ERROR "requires go1.22 or later" */ { | ||
| } | ||
| } |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,16 +1,20 @@ | ||
| // errorcheck -lang=go1.21 | ||
| // errorcheck -lang=go1.22 | ||
|
|
||
| // Copyright 2023 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. | ||
|
|
||
| //go:build go1.4 | ||
| // This file has been changed from its original version as | ||
| // //go:build file versions below 1.21 set the language version to 1.21. | ||
| // The original tested a -lang version of 1.21 with a file version of | ||
| // go1.4 while this new version tests a -lang version of go1.22 | ||
| // with a file version of go1.21. | ||
|
|
||
| package p | ||
|
|
||
| const c = 0o123 // ERROR "file declares //go:build go1.4" | ||
| //go:build go1.21 | ||
|
|
||
| // ERROR "file declares //go:build go1.4" | ||
| package p | ||
|
|
||
| //line issue63489a.go:13:1 | ||
| const d = 0o124 | ||
| func f() { | ||
| for _ = range 10 { // ERROR "file declares //go:build go1.21" | ||
| } | ||
| } |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,11 +1,20 @@ | ||
| // errorcheck -lang=go1.4 | ||
| // errorcheck -lang=go1.21 | ||
|
|
||
| // Copyright 2023 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. | ||
|
|
||
| //go:build go1.4 | ||
| // This file has been changed from its original version as | ||
| // //go:build file versions below 1.21 set the language version to 1.21. | ||
| // The original tested a -lang version of 1.4 with a file version of | ||
| // go1.4 while this new version tests a -lang version of go1.1 | ||
| // with a file version of go1.21. | ||
|
|
||
| //go:build go1.21 | ||
|
|
||
| package p | ||
|
|
||
| const c = 0o123 // ERROR "file declares //go:build go1.4" | ||
| func f() { | ||
| for _ = range 10 { // ERROR "file declares //go:build go1.21" | ||
| } | ||
| } |