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go/doc/next/3-tools.md

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doc: initialize next directory for Go 1.24 Following the "For the release team" steps in README: cd doc cp -R initial/ next $EDITOR next/1-intro.md Dropped '*' from the cp -R command to avoid needing to create an empty next directory with a separate command. For #68545. For #67586. Change-Id: I25215bc35a043e0f26d4a86ffe66eb3c26348fef Reviewed-on: https://go-review.googlesource.com/c/go/+/600177 Reviewed-by: Dmitri Shuralyov <dmitshur@google.com> LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Auto-Submit: Dmitri Shuralyov <dmitshur@golang.org> Reviewed-by: Cherry Mui <cherryyz@google.com>
2024-07-22 10:44:49 -06:00
## Tools {#tools}
### Go command {#go-command}
### Cgo {#cgo}
cmd/cgo: error on multiple incompatible function declarations When there are multiple declarations of a function, ensure that those declarations at least agree on the size/alignment of arguments and return values. It's hard to be stricter given existing code and situations where arguments differ only by typedefs. For instance: int usleep(unsigned); int usleep(useconds_t); Fixes #67699. Change-Id: I3b4b17afee92b55f9e712b4590ec608ab1f7ac91 Reviewed-on: https://go-review.googlesource.com/c/go/+/588977 Auto-Submit: Keith Randall <khr@golang.org> LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Keith Randall <khr@google.com> Reviewed-by: Ian Lance Taylor <iant@google.com>
2024-05-29 20:37:43 -06:00
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
doc/next: use relative link to Go issue The Go release notes are served on multiple domains (go.dev, golang.google.cn, tip.golang.org, localhost:8080 and so on), so links pointing to the Go website itself need to be relative to work in all those contexts. Caught by a test in x/website. The next CL adds the same test to this repository so these kinds of problems are caught sooner and with less friction. For #68545. Fixes #68575. Change-Id: I08056b98968c77a1d0ed93b63fccfbe41274ec8f Reviewed-on: https://go-review.googlesource.com/c/go/+/600656 Reviewed-by: Dmitri Shuralyov <dmitshur@google.com> Auto-Submit: Dmitri Shuralyov <dmitshur@golang.org> Reviewed-by: Ian Lance Taylor <iant@google.com> LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
2024-07-24 11:30:28 -06:00
files. See [#67699](/issue/67699).
cmd/go/internal/test: add 'tests' vet check to 'go test' suite (Second attempt at CL 529816 (f1d6050), reverted in CL 571695 (1304d98) due to broken longtest builder.) The tests analyser reports structural problems in test declarations. Presumably most of these would be caught by go test itself, which compiles and runs (some subset of) the tests, but Benchmark and Fuzz functions are executed less frequently and may benefit more from static checks. A number of tests of "go vet" needed to be updated, either to avoid mistakes caught by the analyzer, or to suppress the analyzer when the mistakes were intended. Also, reflect the change in go test help message. + release note Fixes golang/go#44251 Change-Id: I1c311086815fe55a66cce001eaab9b41e27d1144 Reviewed-on: https://go-review.googlesource.com/c/go/+/603476 Auto-Submit: Alan Donovan <adonovan@google.com> Reviewed-by: Ian Lance Taylor <iant@google.com> LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
2024-08-06 14:56:56 -06:00
### 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`.
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