Change-Id: I617abd53f5fc883b972a1ef090886b85607e00bb
Reviewed-on: https://go-review.googlesource.com/18155Reviewed-by: Aram Hăvărneanu <aram@mgk.ro>

Fixes #13780.

Change-Id: I629e2ba79b74d693e04c3747812c9a686cae5335
Reviewed-on: https://go-review.googlesource.com/18218Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

Change-Id: I85caba8c743dcd82954de75df947053b3d206bdc
Reviewed-on: https://go-review.googlesource.com/18117Reviewed-by: Minux Ma <minux@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Reviewed-by: Josh Bleecher Snyder <josharian@gmail.com>
Reviewed-by: Alex Brainman <alex.brainman@gmail.com>

Open(`C:`) currently opens root directory on C:. Change that to open
current directory on C:. Just like cmd.exe's "dir C:" command does.
Just like FindFirstFile("C:*") Windows API does. It is also consistent
with what filepath.Join("C:", "a") currently does.

Fixes #13763

Change-Id: I60b6e7d80215d110bbbb6265c9f32717401638c6
Reviewed-on: https://go-review.googlesource.com/18184Reviewed-by: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Alex Brainman <alex.brainman@gmail.com>

Change-Id: I374dabed6bf9783839d637e9d7fd6f4e61c7eecf
Reviewed-on: https://go-review.googlesource.com/18183Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

Fixes #13752

Change-Id: I53cfc4ecae90c35b6f1074f3be08489c408a6464
Reviewed-on: https://go-review.googlesource.com/18181Reviewed-by: Alex Brainman <alex.brainman@gmail.com>

Now there are just three programs to compile instead of many,
and repeated tests can reuse the compilation result instead of
rebuilding it.

Combined, these changes reduce the time spent testing runtime
during all.bash on my laptop from about 60 to about 30 seconds.
(All.bash itself runs in 5½ minutes.)

For #10571.

Change-Id: Ie2c1798b847f1a635a860d11dcdab14375319ae9
Reviewed-on: https://go-review.googlesource.com/18085Reviewed-by: Austin Clements <austin@google.com>
Run-TryBot: Austin Clements <austin@google.com>

Change-Id: I4a6928b4674b6aaab3611cad7526347923a0015f
Reviewed-on: https://go-review.googlesource.com/18153Reviewed-by: Ian Lance Taylor <iant@golang.org>

I broke the rule: never click the Submit button on the web.

Change-Id: If81a5cc31c1f28664960bad124cc596f5cab1222
Reviewed-on: https://go-review.googlesource.com/18203Reviewed-by: Russ Cox <rsc@golang.org>

Saves 15 seconds from all.bash on my laptop (3:20 -> 3:05).

Change-Id: Ic5dc3c7804e78b584789dd856a3dada94000a8e2
Reviewed-on: https://go-review.googlesource.com/18199Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

These find approximately nothing.
Takes 5% off my all.bash run time.

For #10571.

Change-Id: I21d3a844af756eb37f59bba0064f24995626da0d
Reviewed-on: https://go-review.googlesource.com/18198Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

Takes 15% off my all.bash run time
(after this and earlier CLs, now down to 3½ from 5½ minutes).

For #10571.

Change-Id: Iac316ffb730c9ff0a0faa7cc3b82ed4f7e6d4361
Reviewed-on: https://go-review.googlesource.com/18088Reviewed-by: Ian Lance Taylor <iant@golang.org>

Mostly we just care that the test binaries link and start up.
No need to run the full test suites.

Takes 12% off my all.bash run time.

For #10571.

Change-Id: I01af618f3d51deb841ea638424e1389a2df7d746
Reviewed-on: https://go-review.googlesource.com/18086Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Russ Cox <rsc@golang.org>

Takes 3% off my all.bash run time.

For #10571.

Change-Id: I8f00f523d6919e87182d35722a669b0b96b8218b
Reviewed-on: https://go-review.googlesource.com/18087Reviewed-by: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>

Change-Id: Ib00e866e29681631f6fa3a14e7d81c25fc3c8500
Reviewed-on: https://go-review.googlesource.com/18052Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

I'm tired of having to remember it on every command.
Rebuilding everything is the wrong default.

This CL updates the build script, but the builders may
(or may not) need work, depending on whether they
rebuild using the test command (I doubt it).

Change-Id: I21f202a2f13e73df3f6bd54ae6a317c467b68151
Reviewed-on: https://go-review.googlesource.com/18084Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

Change-Id: I496b701e2fcc944c764002643c7b0b2ce9e08806
Reviewed-on: https://go-review.googlesource.com/18182Reviewed-by: Dave Cheney <dave@cheney.net>

Currently goroutineheader goes through some convolutions to *almost*
print the scan state of a G. However, the code path that would print
the scan state of the G refers to gStatusStrings where it almost
certainly meant to refer to gScanStatusStrings (which is unused), so
it winds up printing the regular status string without the scan state
either way. Furthermore, if the G is in _Gwaiting, we override the
status string and lose where this would indicate the scan state if it
worked.

This commit fixes this so the runtime prints the scan state. However,
rather than using a parallel list of status strings, this simply adds
a conditional print if the scan bit is set. This lets us remove the
string list, prints the scan state even in _Gwaiting, and lets us
strip off the scan bit at the beginning of the function, which
simplifies the rest of it.

Change-Id: Ic0adbe5c05abf4adda93da59f93b578172b28e3d
Reviewed-on: https://go-review.googlesource.com/18092Reviewed-by: Keith Randall <khr@golang.org>

Change-Id: I9485ecbd9d546893e4f0db846b08d835fa7515d7
Reviewed-on: https://go-review.googlesource.com/18140Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

If non-Go code calls sigaltstack before a signal is received, use
sigaltstack to determine the current signal stack and set the gsignal
stack to use it.  This makes the Go runtime more robust in the face of
non-Go code.  We still can't handle a disabled signal stack or a signal
triggered with SA_ONSTACK clear, but we now give clear errors for those
cases.

Fixes #7227.
Update #9896.

Change-Id: Icb1607e01fd6461019b6d77d940e59b3aed4d258
Reviewed-on: https://go-review.googlesource.com/18102
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Mikio Hara <mikioh.mikioh@gmail.com>

This makes NYCbCrA consistent with YCbCr.

Fixes #13706.

Change-Id: Ifced84372e4865925fa6efef9ca2f1de43da70e0
Reviewed-on: https://go-review.googlesource.com/18115Reviewed-by: Rob Pike <r@golang.org>

s/activitiy/activity

Change-Id: Ib2bbc929b38b1993000da57daed2d795f4a93997
Reviewed-on: https://go-review.googlesource.com/18131Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

s/encrypt/decrypt/

The text is unsafe to cut and paste...

Change-Id: Iab19ddf8182d087e9a4b4d34a9eeabd1d2aa02d6
Reviewed-on: https://go-review.googlesource.com/18104Reviewed-by: Rob Pike <r@golang.org>

Give a link to the wikipedia page describing the mechanism and
explain better how to use the same buffer for input and output.

Change-Id: If6dfd6cf9c6dff0517cb715f60a11349dbdd91e0
Reviewed-on: https://go-review.googlesource.com/18103Reviewed-by: Russ Cox <rsc@golang.org>

Fixes #13701.

Change-Id: I9825864d23aeba1971cf5f581e1e59ac4c9b87fd
Reviewed-on: https://go-review.googlesource.com/18090Reviewed-by: David Crawshaw <crawshaw@golang.org>

Fixes #13704.

Change-Id: I7afef5058fa88b0de41213cf46219b684369f47f
Reviewed-on: https://go-review.googlesource.com/18111Reviewed-by: Ian Lance Taylor <iant@golang.org>

This change replaces the existing log format separated by commas and
spaces with space-separated one.

Change-Id: I9a4b38669025430190c9a1a6b5c82b862866559d
Reviewed-on: https://go-review.googlesource.com/17999Reviewed-by: Ian Lance Taylor <iant@golang.org>

Approved by the IETF.

https://datatracker.ietf.org/doc/draft-ietf-httpbis-legally-restricted-status/

Change-Id: I688597bb5f7ef7c7a9be660a4fcd2ef02d9dc9f4
Reviewed-on: https://go-review.googlesource.com/18112Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Run-TryBot: David Symonds <dsymonds@golang.org>

Change-Id: Ic3f006f86a86de628e14b107f88a5923ea856a58
Reviewed-on: https://go-review.googlesource.com/18093Reviewed-by: David Symonds <dsymonds@golang.org>

Fixes #13684.

Change-Id: I3977119b6eb1d6b7dc2ea1e7d6656a8f0d421bc1
Reviewed-on: https://go-review.googlesource.com/18060
Run-TryBot: Robert Griesemer <gri@golang.org>
Reviewed-by: Rob Pike <r@golang.org>

In general the package net deals IPv4 addresses as IPv6 IPv4-mapped
addresses internally for the dual stack era, when we need to support
various techniques on IPv4/IPv6 translation.

This change makes windows implementation follow the same pattern which
BSD variants and Linux do.

Updates #13544.

Also fixes an unintentionally formatted line by accident by gofmt.

Change-Id: I4953796e751fd8050c73094468a0d7b0d33f5516
Reviewed-on: https://go-review.googlesource.com/17992Reviewed-by: Alex Brainman <alex.brainman@gmail.com>

CL skips interfaces that are not listed on getmac output.

Fixes #13606

Change-Id: Ic25c9dc95e8eeff4d84b78e99131a4f97020164c
Reviewed-on: https://go-review.googlesource.com/17994Reviewed-by: Mikio Hara <mikioh.mikioh@gmail.com>
Run-TryBot: Mikio Hara <mikioh.mikioh@gmail.com>

Fixes #13690.

Change-Id: I3b9b993a2e7ecf07bab7d1935d4c83a86bc6ba3a
Reviewed-on: https://go-review.googlesource.com/18054Reviewed-by: Alex Brainman <alex.brainman@gmail.com>

Only install signal handlers for synchronous signals that become
run-time panics.  Set the SA_ONSTACK flag for other signal handlers as
needed.

Fixes #13028.
Update #12465.
Update #13034.
Update #13042.

Change-Id: I28375e70641f60630e10f3c86e24b6e4f8a35cc9
Reviewed-on: https://go-review.googlesource.com/17903Reviewed-by: Russ Cox <rsc@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>

Reapply golang.org/cl/17918

Change-Id: I0df40585cdd4dae8d365ed9860a81e0cb23f21b9
Reviewed-on: https://go-review.googlesource.com/18032Reviewed-by: Russ Cox <rsc@golang.org>

It turns out that the second argument for sigaction on Darwin has a
different type than the first argument.  The second argument is the user
visible sigaction struct, and does not have the sa_tramp field.

I base this on
  http://www.opensource.apple.com/source/Libc/Libc-1081.1.3/sys/sigaction.c
not to mention actual testing.

While I was at it I removed a useless memclr in setsig, a relic of the C
code.

This CL is Darwin-specific changes.  The tests for this CL are in
https://golang.org/cl/17903 .

Change-Id: I61fe305c72311df6a589b49ad7b6e49b6960ca24
Reviewed-on: https://go-review.googlesource.com/18015Reviewed-by: David Crawshaw <crawshaw@golang.org>

Change-Id: I59829029769ae08c6c54208a1e38a0794868c5db
Reviewed-on: https://go-review.googlesource.com/18045Reviewed-by: Ian Lance Taylor <iant@golang.org>

Fixes #13681.

Change-Id: I308930f4d9200fbe0f09cd08c38392ca1bb0db67
Reviewed-on: https://go-review.googlesource.com/18044Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Reviewed-by: Austin Clements <austin@google.com>

Programs that call panic to crash after detecting a serious problem
may wish to use SetTraceback to force printing of all goroutines first.

Change-Id: Ib23ad9336f405485aabb642ca73f454a14c8baf3
Reviewed-on: https://go-review.googlesource.com/18043Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

This future-proofs the Chdr64 structure against later versions of ELF
defining this field and declutters the documentation without changing
the layout of the struct.

This structure does not exist in the current release, so this change
is safe.

Change-Id: I239aad7243ddaf063a1f8cd521d8a50b30413281
Reviewed-on: https://go-review.googlesource.com/18028Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>