Pointer arithemetic is done mod 2^32 on 386, so we can just
drop the high bits of any large constant offsets.

The bounds check will make sure wraparounds are never observed.

Fixes #21655

Change-Id: I68ae5bbea9f02c73968ea2b21ca017e5ecb89223
Reviewed-on: https://go-review.googlesource.com/82675
Run-TryBot: Keith Randall <khr@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: David Chase <drchase@google.com>

Change-Id: I65209b90ed7c56d4c751b3e4b3ce1de52dae368c
Reviewed-on: https://go-review.googlesource.com/82635Reviewed-by: Ian Lance Taylor <iant@golang.org>

I can reproduce with a very short timeout (fractions of a millisecond)
combined with -race.

But given that this is inherently sensitive to actual time, add a
testing mechanism to retry with increasingly large times to compensate
for busy buidlers. This also means the test is usually faster now,
too, since we can start with smaller durations.

Fixes #19608

Change-Id: I3a222464720195849da768e9801eb7b43baa4aeb
Reviewed-on: https://go-review.googlesource.com/82595
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>

It's unused and doesn't work.

Fixes #20833

Change-Id: I09335e84c60f88dd1771f7353b0097f36a5e7660
Reviewed-on: https://go-review.googlesource.com/82636
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>

It's 32-bit binaries that fail for reasons unknown on 64-bit kernels.

Change-Id: Ib410af0491160e3ed8d32118966142516123db2c
Reviewed-on: https://go-review.googlesource.com/82655Reviewed-by: Andrew Bonventre <andybons@golang.org>

Change-Id: I28ddb8cd347120c08d5b58ae20f481b60416abc1
Reviewed-on: https://go-review.googlesource.com/82755Reviewed-by: Andrew Bonventre <andybons@golang.org>

Fixes #21681
Updates #21728

Change-Id: I79cf4564c1355ecab891102d4215cbbffd8eb0ce
Reviewed-on: https://go-review.googlesource.com/82535Reviewed-by: Ian Lance Taylor <iant@golang.org>

Change-Id: I5a38200b9e050b484ec39f47c637e651e237390d
Reviewed-on: https://go-review.googlesource.com/82536Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>

Change-Id: Ib8ef626ae6bc66571ecf4569e37feb75b4b90d10
Reviewed-on: https://go-review.googlesource.com/82555Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

The DWARF inline info generation code was using file/line/column (from
src.Pos) as a means of matching up pre- and post-optimization variable
nodes. This turns out to be problematic since it looks as though
distinct formals on the same line can be assigned the same column
number. Work around this issue by adding variable names to the
disambiguation code. Added a testpoint to the linker DWARF test that
checks to make sure each abstract origin offset of distinct within a
given DWARF DW_AT_inlined_routine body.

Fixes #23020.

Change-Id: Ie09bbe01dc60822d84d4085547b138e644036fb3
Reviewed-on: https://go-review.googlesource.com/82396Reviewed-by: David Chase <drchase@google.com>
Reviewed-by: Cherry Zhang <cherryyz@google.com>

Change-Id: I2a4347540ecb94a9f124a228dc31452620ab0645
Reviewed-on: https://go-review.googlesource.com/82335Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Reviewed-by: Chris Broadfoot <cbro@golang.org>
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
Run-TryBot: Andrew Bonventre <andybons@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>

Closes #23028

Change-Id: I469f1ab2dee9151334b38e0d3a22eb9840c8807b
Reviewed-on: https://go-review.googlesource.com/82495Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

Fixes #22858

Change-Id: I0478d5609e381f01c7345e7f53c24af05d7f78ad
Reviewed-on: https://go-review.googlesource.com/82415
Run-TryBot: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Reviewed-by: Alberto Donizetti <alb.donizetti@gmail.com>
Reviewed-by: Lynn Boger <laboger@linux.vnet.ibm.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>

Updates x/arch/arm64 to git rev. 530ae47 for CL 82437.

Change-Id: I0131f7ac783462fcaeddf5625c59784fe30bbd5a
Reviewed-on: https://go-review.googlesource.com/82435Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

Fixes #20953

Change-Id: Ia30a6e0e335c1f738e1359500e09057b5981f1c7
Reviewed-on: https://go-review.googlesource.com/82397
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

Fixes #22911

Change-Id: I61de85323e290b64917a09bc512935e835ff7cf0
Reviewed-on: https://go-review.googlesource.com/82276Reviewed-by: Ian Lance Taylor <iant@golang.org>

Fixes #20315

Change-Id: I5d5c82f10902b59168fc0cca0af50286843df55d
Reviewed-on: https://go-review.googlesource.com/82375
Run-TryBot: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>

This CL reverts CL 76851 and takes a different approach to #21357.
The changes in encode.go and encode_test.go are reverts that
rolls back the changed behavior in CL 76851 where
embedded pointers to unexported struct types were
unilaterally ignored in both marshal and unmarshal.

Instead, these fields are handled as before with the exception that
it returns an error when Unmarshal is unable to set an unexported field.
The behavior of Marshal is now unchanged with regards to #21357.

This policy maintains the greatest degree of backwards compatibility
and avoids silently discarding data the user may have expected to be present.

Fixes #21357

Change-Id: I7dc753280c99f786ac51acf7e6c0246618c8b2b1
Reviewed-on: https://go-review.googlesource.com/82135
Run-TryBot: Joe Tsai <thebrokentoaster@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>

Update the tzdata database to version 2017c (released 2017-10-20).

Updates #22487

Change-Id: If58ff89173ef1f1044075505f42ff132b57795f0
Reviewed-on: https://go-review.googlesource.com/74230Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>

Fixed by CL 76025 yesterday, without realizing it:
the testshared and testplugin builds of separate iface_i
packages were colliding incorrectly in the cache.
Including the build directory fixes that.

Fixes #22571.

Change-Id: Id8193781c67c3150823dc1f48eae781dfe3702fb
Reviewed-on: https://go-review.googlesource.com/76371
Run-TryBot: Russ Cox <rsc@golang.org>
Reviewed-by: David Crawshaw <crawshaw@golang.org>

Fixes #22642.

Change-Id: I2ed6305555a0cf753b9cdce061463b1749d5e53e
Reviewed-on: https://go-review.googlesource.com/81975
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>

For #23011.

Change-Id: Ibd934f32e41cb8dddbd3d68a324536cf29a97916
Reviewed-on: https://go-review.googlesource.com/82275
Run-TryBot: Russ Cox <rsc@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

Change-Id: Ife60468d508f90321733ebdbdb0e6cf443ba1659
Reviewed-on: https://go-review.googlesource.com/82156Reviewed-by: Ian Lance Taylor <iant@golang.org>

Change-Id: I8a9e4d00247fe9bda6e19551850bdec0367df2e1
Reviewed-on: https://go-review.googlesource.com/82157Reviewed-by: Ian Lance Taylor <iant@golang.org>

Change-Id: I97a28379b1a9ca3daa875edbcd5213673ca138d0
Reviewed-on: https://go-review.googlesource.com/82115Reviewed-by: Russ Cox <rsc@golang.org>

Change-Id: Ie246756452cd872961aeb659b35297c229504a3c
Reviewed-on: https://go-review.googlesource.com/81936Reviewed-by: Russ Cox <rsc@golang.org>

Change-Id: Id6ced9a6c76131263041cdaf5ed17479be075fa6
Reviewed-on: https://go-review.googlesource.com/82075
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Russ Cox <rsc@golang.org>

Change-Id: If16f069f410d043fd11864a4c1a7d54b5b4922d2
Reviewed-on: https://go-review.googlesource.com/82200Reviewed-by: Ian Lance Taylor <iant@golang.org>

There are some basic tests in the packages implementing the hashes,
but this one is meant to be comprehensive for the standard library
as a whole.

Most importantly, it locks in the current representations and makes
sure that they do not change from release to release (and also, as a
result, that future releases can parse the representations generated
by older releases).

The crypto/* MarshalBinary implementations are being changed
in this CL to write only d.x[:d.nx] to the encoding, with zeros for
the remainder of the slice d.x[d.nx:]. The old encoding wrote the
whole d.x, but that exposed an internal detail: whether d.x is
cleared after a full buffer is accumulated, and also whether d.x was
used at all for previous blocks (consider 1-byte writes vs 1024-byte writes).
The new encoding writes only what the decoder needs to know,
nothing more.

In fact the old encodings were arguably also a security hole,
because they exposed data written even before the most recent
call to the Reset method, data that clearly has no impact on the
current hash and clearly should not be exposed. The leakage
is clearly visible in the old crypto/sha1 golden test tables also
being modified in this CL.

Change-Id: I4e9193a3ec5f91d27ce7d0aa24c19b3923741416
Reviewed-on: https://go-review.googlesource.com/82136
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Joe Tsai <thebrokentoaster@gmail.com>

String method comments should explain what they do,
not that they are attempting to implement fmt.Stringer.

Change-Id: If51dd1ff2f0c2f9ef9dca569bfa0c3914be2e8fe
Reviewed-on: https://go-review.googlesource.com/82081
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

The docs make it seem like they are all things a single object
would implement. That's true of Driver and DriverContext,
but Connector is really something else. Attempt to clarify.

Change-Id: I8fdf1cff855a0fbe37ea22720c082045c719a267
Reviewed-on: https://go-review.googlesource.com/82082
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Daniel Theophanes <kardianos@gmail.com>

Updates #22961

Change-Id: Ib2f41aefb4f6470598d8637611da5491156ea840
Reviewed-on: https://go-review.googlesource.com/82015Reviewed-by: Rob Pike <r@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

Go 1.10 is adding new API MarshalPKCS1PublicKey and
ParsePKCS1PublicKey for converting rsa.PublicKeys.

Even though we'd prefer that users did not, check that
if users call asn1.Marshal and asn1.Unmarshal directly instead,
they get the same results. We know that code exists in the
wild that depends on this.

Change-Id: Ia385d6954fda2eba7da228dc42f229b6839ef11e
Reviewed-on: https://go-review.googlesource.com/82080
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

Originally these routines could not fail except by
returning errors from the underlying writer.

Then we realized that header keys containing colons
needed to be rejected, and we started returning an error
from Encode. But that only happens after writing a
partial PEM block to the underlying writer, which is
unfortunate, but at least it was undocumented.

CL 77790 then documented this unfortunate behavior.

Instead of documenting unfortunate behavior, fix it.

Change-Id: Ic7467a576c4cecd16a99138571a1269cc4f96204
Reviewed-on: https://go-review.googlesource.com/82076
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

They do not convert a plural into a singular.
(Introduced recently, in CL 77050.)

Change-Id: I3b6c4d03b1866d4133e90b8ab05e8d4bfbd55125
Reviewed-on: https://go-review.googlesource.com/82078
Run-TryBot: Russ Cox <rsc@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

The new example is shorter but illustrates the
interesting parts of the Unix function and methods.

Change-Id: Ief8ec38909d4ed7829e8d3da58e7b7f712537f99
Reviewed-on: https://go-review.googlesource.com/82079
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

Historically, DetectContentType has returned "text/plain; charset=utf-8"
for an empty body, there was a test for this, and there should continue
to be one.

CL 46631 changed the content-serving handlers to avoid setting any
Content-Type header when serving empty content. Even if that change
in behavior is correct, the CL is explicitly not changing DetectContentType,
so it must also not change DetectContentType's tests.

Change-Id: I7a19c9fabb43be47e349b40e729e49fceb3f2894
Reviewed-on: https://go-review.googlesource.com/82077
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

This fixes a regression where only CRLF was folded into LF at EOF.
Now, we also truncate trailing CR at EOF to preserve the old behavior.

Every one of the test cases added exactly matches the behavior
of Go1.9, even if the results are somewhat unexpected.

Fixes #22937

Change-Id: I1bc6550533163ae489ea77ec1e598163267b7eec
Reviewed-on: https://go-review.googlesource.com/81577
Run-TryBot: Joe Tsai <thebrokentoaster@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

The previous implementation of net.Pipe was just a thin wrapper around
io.Pipe and did not wrap any of the io.Pipe errors as net.Errors.
As a result of Hyrum's law, users have come to depend on the fact that
net.Pipe returns io.ErrClosedPipe when the pipe is closed.
Thus, we preserve this behavior to avoid regressing such use cases.

Change-Id: I06b387877b944c1c08527601f58983872b7557b4
Reviewed-on: https://go-review.googlesource.com/81777
Run-TryBot: Joe Tsai <thebrokentoaster@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>

Sometimes people use run.bash repeatedly
or run go tool dist test by hand for cgo tests.
Avoid test caching in that case, by request.

Refactor code so that all go test commands
share a common prefix.

If not caching is problematic it will be a one-line
change to turn caching back on.

Fixes #22758.

Change-Id: I17d721b832d97bffe26629d21f85b05dbbf2b3ec
Reviewed-on: https://go-review.googlesource.com/80735
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>