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go/doc/next/3-tools.md
Brad Fitzpatrick 83a7626687 cmd/go: enable GOCACHEPROG by default, without GOEXPERIMENT
Fixes #64876

Change-Id: I2c0e1ed22f8e13d00dfb5fededbc84038cd7ff8e
Reviewed-on: https://go-review.googlesource.com/c/go/+/626035
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Auto-Submit: Sam Thanawalla <samthanawalla@google.com>
Reviewed-by: Michael Matloob <matloob@golang.org>
Reviewed-by: Sam Thanawalla <samthanawalla@google.com>
2024-11-13 19:09:01 +00:00

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Markdown

## Tools {#tools}
### Go command {#go-command}
### Cgo {#cgo}
Cgo currently refuses to compile calls to a C function which has multiple
incompatible declarations. For instance, if `f` is declared as both `void f(int)`
and `void f(double)`, cgo will report an error instead of possibly generating an
incorrect call sequence for `f(0)`. New in this release is a better detector for
this error condition when the incompatible declarations appear in different
files. See [#67699](/issue/67699).
### Vet
The new `tests` analyzer reports common mistakes in declarations of
tests, fuzzers, benchmarks, and examples in test packages, such as
malformed names, incorrect signatures, or examples that document
non-existent identifiers. Some of these mistakes may cause tests not
to run.
This analyzer is among the subset of analyzers that are run by `go test`.
### GOCACHEPROG
The `cmd/go` internal binary and test caching mechanism can now be implemented
by child processes implementing a JSON protocol between the `cmd/go` tool
and the child process named by the `GOCACHEPROG` environment variable.
This was previously behind a GOEXPERIMENT.
For protocol details, see [#59719](/issue/59719).