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2 commits

Author SHA1 Message Date
Matthew Dempsky 42e46f4ae0 [dev.regabi] cmd/compile: comment out //go:linkname warning
It's noisy and not doing any harm, and we still have an entire release
cycle to revisit and address the issue properly.

Updates #42938

Change-Id: I1de5cfb495a8148c9c08b215deba38f2617fb467
Reviewed-on: https://go-review.googlesource.com/c/go/+/274732
Trust: Matthew Dempsky <mdempsky@google.com>
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com>
2020-12-02 06:49:37 +00:00
Matthew Dempsky 2d6ff998ed [dev.regabi] cmd/compile: process //go:linknames after declarations
Allows emitting errors about ineffectual //go:linkname directives.

In particular, this exposed: a typo in os2_aix.go; redundant (but
harmless) directives for libc_pipe in both os3_solaris.go and
syscall2_solaris.go; and a bunch of useless //go:linkname directives
in macOS wrapper code.

However, because there's also ineffectual directives in the vendored
macOS code from x/sys, that can't be an error just yet. So instead we
print a warning (including a heads up that it will be promoted to an
error in Go 1.17) to prevent backsliding while we fix and re-vendor
that code.

Passes toolstash-check.

Change-Id: I59badeab5df0d8b3abfd14c6066e9bb00e840f73
Reviewed-on: https://go-review.googlesource.com/c/go/+/273986
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Russ Cox <rsc@golang.org>
Trust: Matthew Dempsky <mdempsky@google.com>
2020-12-01 17:08:36 +00:00