ppc64{,le} processor level selection allows the compiler to generate instructions
targeting newer processors and processor-specific optimizations without breaking
compatibility with our current baseline. This feature introduces a new environment
variable, GOPPC64.
GOPPC64 is a GOARCH=ppc64{,le} specific option, for a choice between different
processor levels (i.e. Instruction Set Architecture versions) for which the
compiler will target. The default is 'power8'.
Change-Id: Ic152e283ae1c47084ece4346fa002a3eabb3bb9e
Reviewed-on: https://go-review.googlesource.com/c/go/+/163758
Run-TryBot: Carlos Eduardo Seo <cseo@linux.vnet.ibm.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: David Chase <drchase@google.com>
This CL documents the new binary and octal integer literals,
hexadecimal floats, generalized imaginary literals and digit
separators for all number literals in the spec.
Added empty lines between abutting paragraphs in some places
(a more thorough cleanup can be done in a separate CL).
A minor detail: A single 0 was considered an octal zero per the
syntax (decimal integer literals always started with a non-zero
digit). The new octal literal syntax allows 0o and 0O prefixes
and when keeping the respective octal_lit syntax symmetric with
all the others (binary_lit, hex_lit), a single 0 is not automatically
part of it anymore. Rather than complicating the new octal_lit syntax
to include 0 as before, it is simpler (and more natural) to accept
a single 0 as part of a decimal_lit. This is purely a notational
change.
R=Go1.13
Updates #12711.
Updates #19308.
Updates #28493.
Updates #29008.
Change-Id: Ib9fdc6e781f6031cceeed37aaed9d05c7141adec
Reviewed-on: https://go-review.googlesource.com/c/go/+/161098
Reviewed-by: Rob Pike <r@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
A recent edit broke the flow; add a paragraph break when the subject
switches from maps to structs.
No changes in wording.
Change-Id: I5df88ec36b9d81931cfdbc684424440d01ac06d1
Reviewed-on: https://go-review.googlesource.com/c/go/+/165917
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
And explain that it does this. A minor change probably worth mentioning,
although (#28782) I'd still like to freeze this document against any substantial
changes.
Fix#30568.
Change-Id: I74c56744871cfaf00dc52a9b480ca61d3ed19a6b
Reviewed-on: https://go-review.googlesource.com/c/go/+/165597
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Path should now appear with the correct slash, depending on which
platform install document is being viewed - keeping in line with the
rest of the document.
Fixes#30160
Change-Id: Ib10e5a4adf366c700bff6f8d246bd5e3111ed61c
Reviewed-on: https://go-review.googlesource.com/c/go/+/162918
Reviewed-by: Andrew Bonventre <andybons@golang.org>
There's a "lib/time" sub-section in the Go 1.12 relase notes that
points to a non-existent golang.org/pkg/lib/time page.
The note is about a change in the tz database in the src/lib/time
directory, but the section's title (and the link) should probably just
refer to the time package.
Change-Id: Ibf9dacd710e72886f14ad0b7415fea1e8d25b83a
Reviewed-on: https://go-review.googlesource.com/c/164977
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Using go get prevents the failure case of when the
user doesn't have the repo on their machine.
Change-Id: I9c1174087728b5b06b578b0d52df6eeb7e8c7a3c
Reviewed-on: https://go-review.googlesource.com/c/163718
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Change-Id: I46fa43f6c5ac49386f4622e1363d8976f49c0894
Reviewed-on: https://go-review.googlesource.com/c/162019
Reviewed-by: Andrew Bonventre <andybons@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
install.html still insisted that GOROOT must be set if a binary install
of Go is set up in a custom directory. However, since 1.10, this has
been unnecessary as the GOROOT will be found based on the location of
the 'go' binary being run.
Likewise, install-source.html includes an 'export GOROOT' line in a
section that only talks about explicitly setting GOARCH and GOOS, which
is optional. We don't want to have users think it is recommended to set
GOROOT here either, so remove the unnecessary line.
Change-Id: I7dfef09f9a1d003e0253b793d63ea40d5cf1837f
Reviewed-on: https://go-review.googlesource.com/c/161758
Reviewed-by: Andrew Bonventre <andybons@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Daniel Martí <mvdan@mvdan.cc>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Most of the issues that led to the decision on #30055 were related to
incompatibility with or faulty support for RSA-PSS (#29831, #29779,
v1.5 signatures). RSA-PSS is required by TLS 1.3, but is also available
to be negotiated in TLS 1.2.
Altering TLS 1.2 behavior based on GODEBUG=tls13=1 feels surprising, so
just disable RSA-PSS entirely in TLS 1.2 until TLS 1.3 is on by default,
so breakage happens all at once.
Updates #30055
Change-Id: Iee90454a20ded8895e5302e8bcbcd32e4e3031c2
Reviewed-on: https://go-review.googlesource.com/c/160998
Run-TryBot: Filippo Valsorda <filippo@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Adam Langley <agl@golang.org>
Note the removal of the go tool tour command in the Go 1.12 release
notes.
Updates #24819
Change-Id: I258ab9401ea2cc06a83328c67299376fcf23c980
Reviewed-on: https://go-review.googlesource.com/c/158618
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Reviewed-by: Emmanuel Odeke <emm.odeke@gmail.com>
Reviewed-by: Andrew Bonventre <andybons@golang.org>
I needed Go 1.10 to debug and fix a test failure on that Go version in
x/tools, but I forgot what the magic 'go get' command for this was.
Googling "download specific golang version" and similar keywords showed
no results, presumably because the golang.org/dl subrepo isn't
prominently recommended nor documented anywhere.
The most appropriate documentation page to add this to is doc/install,
since it goes into some detail and is well indexed. We only need a short
section to introduce the trick.
The example does mention a specific version, Go 1.10.7, but I couldn't
imagine a way to make it version-agnostic while still being clear on
what the commands effectively do.
Change-Id: I13158564d76d95caec412cdb35a50a4356df5863
Reviewed-on: https://go-review.googlesource.com/c/157457
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Reviewed-by: Rob Pike <r@golang.org>
This is about a minor change but worthy of note because this
may affect the profile results users will see.
Change-Id: Ie2c4358b248f868662dbc71db587576481aa7238
Reviewed-on: https://go-review.googlesource.com/c/158577
Reviewed-by: Raul Silvera <rauls5382@gmail.com>
Reviewed-by: Austin Clements <austin@google.com>
The ABI changes should be completely transparent to Go code, but could
cause linking issues in certain situations involving assembly code
reaching across package boundaries. If users encounter linking
problems, point them to the "Compatibility" section of the ABI design
document, which gives some guidance.
Change-Id: I4156d164562e2ec0de7ae8f9a3631a32ec45b317
Reviewed-on: https://go-review.googlesource.com/c/158237
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Worth mentioning because the results are not bit-for-bit identical.
This causes a test failure in github.com/fogleman/gg.
Updates #6794
Change-Id: I701f34927731fb5c658a1be271c04388e5e7e3f7
Reviewed-on: https://go-review.googlesource.com/c/157417
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
It was recently updated (again) to version 2018i. Since we're here,
wrap the paragraph at ~70 columns, like all the others.
Change-Id: I0a380385f34f1df1258a9f2af447234967422f37
Reviewed-on: https://go-review.googlesource.com/c/156857
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Change a link in the cgo section of the 1.12 release notes from
https://golang.org/cmd/cgo ...
to
/cmd/cgo/ ...
to uniform it with other links on the page, and to ensure correct
target when the page is displayed on tip.golang.org.
Change-Id: I7653a6ea15ce111a60929c7ae7e9fb0dc9515502
Reviewed-on: https://go-review.googlesource.com/c/156858
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
A workaround has been submitted.
Updates #27993
Change-Id: Ife6443c32673b38000b90dd2efb2985db37ab773
Reviewed-on: https://go-review.googlesource.com/c/156318
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
whereas this is a longstanding tradition
and insofaras it is worth continuing such traditions
and notwithstanding an attempt at future-proofing
thetruthofthematter is that I have been waiting for years to send this change
so despiteallobjections I have updated the copyright year.
Change-Id: I55961b15a7eda35d84fdd9250afdbe19f0bf8412
Reviewed-on: https://go-review.googlesource.com/c/155928
Reviewed-by: Emmanuel Odeke <emm.odeke@gmail.com>
Currently the link works also with the non-existing GOARCH armd64, but
let's correct in anyhow.
Change-Id: Ida647b8f9dd2f8460b019f5a23759f10a6da8e60
Reviewed-on: https://go-review.googlesource.com/c/155277
Reviewed-by: Ian Lance Taylor <iant@golang.org>
