As spotted by scripts/check-third-party.sh, it's possible to import
the testing package without using `go test`, so our previous solution
to only load testing/synctest when running `go test` was not enough.
Add a regression test via stdimporter in gogarble.txtar.
While strictly speaking it would be okay to leave Go 1.24 support
in place for the time being, we are behind on a few tasks at the moment
so it's best to keep the setup at master simpler for the next release.
Go 1.25 already came out two weeks ago, and it seems to have been
a fairly smooth release, so I don't suspect any end users will have
trouble upgrading to it.
Note that two changes were necessary for garble to work on Go 1.25.0.
First, we stop deduplicating runtimeAndLinknamed with runtimeAndDeps.
Otherwise, for GOOS=windows, internal/runtime/cgroup would be missing
as it is a //go:linkname target from runtime on all platforms,
but it is not transitively imported from runtime on GOOS=windows.
Second, the testing/synctest package is now part of std,
and it is a //go:linkname target from the testing package
but not a transitive import from it. Teach appendListedPackages that,
when loading all packages for a `go test` run, it should load
the new testing/synctest package too.
Fixes#968.
The diffstat for go_std_tables.go shows that we were missing
more than two dozen new intrinsic functions from Go 1.24,
which could lead to the intrinsification done by the toolchain
to no longer work and leave programs with slower generic functions.
No changes to the values. However, to avoid noise with every bugfix
release changing all the lines, only use go1.X rather than go1.X.Y
to annotate each of the entries in maps and lists.
This lets us start taking advantage of featurs from Go 1.23,
particularly tracking aliases in go/types and iterators.
Note that we need to add code to properly handle or skip over the new
*types.Alias type which go/types produces for Go type aliases.
Also note that we actually turn this mode off entirely for now,
due to the bug reported at https://go.dev/issue/70394.
We don't yet remove our own alias tracking code yet due to the above.
We hope to be able to remove it very soon.
This teaches the program how to collect information from multiple
Go versions and join it together. For this to work, it needs to
select the Go versions itself, which is now possible via GOTOOLCHAIN.
The merging of data is fairly simple; we join the results from all
versions, and we remove duplicates from older Go versions.
Start producing output with the Go version noted on every data point,
so that we can easily scan what each Go version is contributing.
Daniel Martí