[release-branch.go1.25] cmd/go/internal/gover: fix ModIsPrerelease for toolchain versions

We forgot to call the IsPrerelease function on FromToolchain(vers)
rather than on vers itself. IsPrerelase expects a version without the
"go" prefix. See the corresponding code in ModIsValid and ModIsPrefix
that call FromToolchain before passing the versions to IsValid and
IsLang respectively.

Fixes #74822

Change-Id: I3cf055e1348e6a9dc0334e414f06fe85eaf78024
Reviewed-on: https://go-review.googlesource.com/c/go/+/691655
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Auto-Submit: Michael Matloob <matloob@golang.org>
Reviewed-by: Michael Matloob <matloob@google.com>
Reviewed-by: Michael Pratt <mpratt@google.com>
(cherry picked from commit 69338a335a)
Reviewed-on: https://go-review.googlesource.com/c/go/+/691958
This commit is contained in:
Michael Matloob 2025-07-29 17:12:24 -04:00 committed by Carlos Amedee
parent 6e676ab2b8
commit c72fcab6d6
2 changed files with 9 additions and 4 deletions

View file

@ -109,6 +109,9 @@ func ModIsPrefix(path, vers string) bool {
// The caller is assumed to have checked that ModIsValid(path, vers) is true.
func ModIsPrerelease(path, vers string) bool {
if IsToolchain(path) {
if path == "toolchain" {
return IsPrerelease(FromToolchain(vers))
}
return IsPrerelease(vers)
}
return semver.Prerelease(vers) != ""

View file

@ -94,12 +94,14 @@ stderr '^go: added toolchain go1.24rc1$'
grep 'go 1.22.9' go.mod # no longer implied
grep 'toolchain go1.24rc1' go.mod
# go get toolchain@latest finds go1.999testmod.
# go get toolchain@latest finds go1.23.9.
cp go.mod.orig go.mod
go get toolchain@latest
stderr '^go: added toolchain go1.999testmod$'
stderr '^go: added toolchain go1.23.9$'
grep 'go 1.21' go.mod
grep 'toolchain go1.999testmod' go.mod
grep 'toolchain go1.23.9' go.mod
# Bug fixes.
@ -115,7 +117,7 @@ stderr '^go: upgraded go 1.19 => 1.21.0'
# go get toolchain@1.24rc1 is OK too.
go get toolchain@1.24rc1
stderr '^go: downgraded toolchain go1.999testmod => go1.24rc1$'
stderr '^go: upgraded toolchain go1.23.9 => go1.24rc1$'
# go get go@1.21 should work if we are the Go 1.21 language version,
# even though there's no toolchain for it.