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34903 Commits

Author SHA1 Message Date
christopher-henderson
eb441e6d21 encoding/asn1: allow '&' in PrintableString fields
There are, unfortunately, intermediate CA ceritificates in circulation
that contain the invalid character '&' in some PrintableString fields,
notably Organization Name. This patch allows for ampersand
to be parsed as though it is valid in an ASN.1 PrintableString.

Fixes #22970

Change-Id: Ifab1a10bbff1cdac68e843c6b857ff1a031051aa
Reviewed-on: https://go-review.googlesource.com/81635
Reviewed-by: Adam Langley <agl@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Run-TryBot: Adam Langley <agl@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2017-12-05 18:22:53 +00:00
kirk
bcf964de5e database/sql: fix transaction leak
When the user context which passed in (*DB)BeginTx is canceled or
timeout, the current implementation could cause db transaction leak
in some extreme scenario.

Goroutine 1:
        Call (*DB) BeginTx begins a transaction with a userContext.
        In (*DB)BeginTx, a new goroutine (*Tx)awaitDone
        which monitor context and rollback tx if needed will be created

Goroutine 2(awaitDone):
        block on tx.ctx.Done()

Goroutine 1:
        Execute some insert or update sqls on the database

Goroutine 1:
        Commit the transaction, (*Tx)Commit set
        the atomic variable tx.done to 1

Goroutine 3(maybe global timer):
        Cancel userContext which be passed in Tx

Goroutine 1:
        (*Tx)Commit checks tx.ctx.Done().
        Due to the context has been canceled, it will return
        context.Canceled or context.DeadlineExceeded error immediately
        and abort the real COMMIT operation of transaction

Goroutine 2:
        Release with tx.ctx.Done() signal, execute (*Tx)rollback.
        However the atomic variable tx.done is 1 currently,
        it will return ErrTxDone error immediately and
        abort the real ROLLBACK operation of transaction

Fixes #22976

Change-Id: I3bc23adf25db823861d91e33d3cca6189fb1171d
Reviewed-on: https://go-review.googlesource.com/81736
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
Reviewed-by: Daniel Theophanes <kardianos@gmail.com>
2017-12-05 16:47:21 +00:00
Keith Randall
dd7cbf3a84 cmd/compile: fix map assignment with panicking right-hand side
Make sure that when we're assigning to a map, we evaluate the
right-hand side before we attempt to insert into the map.

We used to evaluate the left-hand side to a pointer-to-slot-in-bucket
(which as a side effect does len(m)++), then evaluate the right-hand side,
then do the assignment. That clearly isn't correct when the right-hand side
might panic.

Fixes #22881

Change-Id: I42a62870ff4bf480568c9bdbf0bb18958962bdf0
Reviewed-on: https://go-review.googlesource.com/81817
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
2017-12-05 00:10:10 +00:00
Christos Zoulas
2ff2eab0d2 runtime: fix NetBSD CPU spin in lwp_park when CPU profiling is active
Fixes #22981

Change-Id: I449eb7b5e022401e80a3ab138063e2f4499fbdf8
Reviewed-on: https://go-review.googlesource.com/81855
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2017-12-05 00:08:51 +00:00
Keith Randall
9d70b3ae04 cmd/compile: fix noopt builder, weird append case
Turn off append-to-itself optimization if optimizations are turned off.

This optimization triggered a bug when doing
  s = append(s, s)
where we write to the leftmost s before reading the rightmost s.

Update #17039

Change-Id: I21996532d20a75db6ec8d49db50cb157a1360b80
Reviewed-on: https://go-review.googlesource.com/81816
Run-TryBot: Keith Randall <khr@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Reviewed-by: David Chase <drchase@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2017-12-04 21:45:40 +00:00
Matthew Dempsky
509ffb94ca cmd/go: disable concurrent compilation under GOEXPERIMENTs
Duplicate cmd/compile check into cmd/go. Manually tested that
"GOEXPERIMENT=fieldtrack make.bash" passes now.

Updates #22223.

Change-Id: I441970a8a5ad4aadf5bd4fbd4d6cc71847b43308
Reviewed-on: https://go-review.googlesource.com/81776
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2017-12-04 19:37:24 +00:00
Matthew Dempsky
2b9e7c1864 test: disable broken test for 1.10
This test was added recently as a regress test for the spec relaxation
in #9060, but doesn't work correctly yet. Disable for now to fix noopt
builders.

Updates #22444.

Change-Id: I45c521ae0da7ffb0c6859d6f7220c59828ac6149
Reviewed-on: https://go-review.googlesource.com/81775
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2017-12-04 19:29:14 +00:00
Than McIntosh
88c2fb9d04 cmd/compile: fix bug in DWARF inl handling of unused autos
The DWARF inline info generation hooks weren't properly
handling unused auto vars in certain cases, triggering an assert (now
fixed). Also with this change, introduce a new autom "flavor" to
use for autom entries that are added to insure that a specific
auto type makes it into the linker (this is a follow-on to the fix
for 22941).

Fixes #22962.

Change-Id: I7a2d8caf47f6ca897b12acb6a6de0eb25f5cac8f
Reviewed-on: https://go-review.googlesource.com/81557
Run-TryBot: Than McIntosh <thanm@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: David Chase <drchase@google.com>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
2017-12-04 18:36:11 +00:00
Elias Naur
03c93eaa0b misc/ios: dump logs for failing lldb sessions to stdout
The iOS test harness dumps the output of its lldb session to stdout,
but only if the lldb session was successfully started.
Make sure the log is always dumpede, so that lldb startup failures
such as

lldb setup error: exited (lldb start: exit status 253)

can be diagnosed.

For the iOS builders.

Change-Id: Ie0e3341dd8f84a88d26509c34816668d3ebbfaa0
Reviewed-on: https://go-review.googlesource.com/76195
Run-TryBot: Elias Naur <elias.naur@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Hyang-Ah Hana Kim <hyangah@gmail.com>
2017-12-04 17:48:58 +00:00
Russ Cox
1b9f66330b cmd/go: disable tests when GOOS/GOARCH != GOHOSTARCH/GOHOSTARCH
The whole GOROOT/pkg tree is installed using the GOHOSTOS/GOHOSTARCH
toolchain (installed in GOROOT/pkg/tool/GOHOSTOS_GOHOSTARCH).
The testgo.exe we run during the cmd/go test will be built
for GOOS/GOARCH, which means it will use the GOOS/GOARCH toolchain
(installed in GOROOT/pkg/tool/GOOS_GOARCH).

If these are not the same toolchain, then the entire standard library
will look out of date to testgo.exe (the compilers in those two different
tool directories are built for different architectures and have different
buid IDs), which will cause many tests to do unnecessary rebuilds
and some tests to attempt to overwrite the installed standard library,
which will in turn make it look out of date to whatever runs after the
cmd/go test exits.

Bail out entirely in this case instead of destroying the world.

The changes outside TestMain are checks that might have caught
this a bit earlier and made it much less confusing to debug.

Fixes #22709.
Fixes #22965.

Change-Id: Ibf28fa19e29a1f1b8f17875f446d3474dd04a924
Reviewed-on: https://go-review.googlesource.com/81516
Run-TryBot: Russ Cox <rsc@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2017-12-04 05:15:50 +00:00
Russ Cox
f047422a18 cmd/go: fix -covermode=atomic use of sync/atomic in -coverpkg matches
If we're using -covermode=atomic with -coverpkg, to add coverage
to more than just the package being tested, then we need to make sure
to make sync/atomic available to the compiler for every package
being recompiled for coverage.

Fixes #22728.

Change-Id: I27f88f6a62e37d4a7455554cd03c8ca2b21f81a4
Reviewed-on: https://go-review.googlesource.com/81497
Run-TryBot: Russ Cox <rsc@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2017-12-04 05:14:54 +00:00
Christos Zoulas
66fcf45477 runtime: make NetBSD lwp_park use monotonic time
This change updates runtime.semasleep to no longer call
runtime.nanotime and instead calls lwp_park with a duration to sleep
relative to the monotonic clock, so the nanotime is never called.
(This requires updating to a newer version of the lwp_park system
call, which is safe, because Go 1.10 will require the unreleased
NetBSD 8+ anyway)

Additionally, this change makes the nanotime function use the
monotonic clock for netbsd/arm, which was forgotten from
https://golang.org/cl/81135 which updated netbsd/amd64 and netbsd/386.

Because semasleep previously depended on nanotime, the past few days
of netbsd have likely been unstable because lwp_park was then mixing
the monotonic and wall clocks. After this CL, lwp_park no longer
depends on nanotime.

Original patch submitted at:
https://www.netbsd.org/~christos/go-lwp-park-clock-monotonic.diff

This commit message (any any mistakes therein) were written by Brad
Fitzpatrick. (Brad migrated the patch to Gerrit and checked CLAs)

Updates #6007
Fixes #22968

Also updates netbsd/arm to use monotonic time for

Change-Id: If77ef7dc610b3025831d84cdfadfbbba2c52acb2
Reviewed-on: https://go-review.googlesource.com/81715
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2017-12-04 03:29:56 +00:00
Brad Fitzpatrick
871b79316a os: clarify docs on Interrupt and Kill
Note that Interrupt will compile but not work on Windows.

Fixes #22454

Change-Id: If011c32211f4bb45d458317e113b9794d5b4a4b1
Reviewed-on: https://go-review.googlesource.com/81035
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-12-02 02:49:01 +00:00
Ian Lance Taylor
415349575d os: calling Fd disables the SetDeadline methods
The full truth seems too complicated to write in this method's doc, so
I'm going with a simple half truth.

The full truth is that Fd returns the descriptor in blocking mode,
because that is historically how it worked, and existing programs
would be surprised if the descriptor is suddenly non-blocking. On Unix
systems whether a file is non-blocking or not is a property of the
underlying file description, not of a particular file descriptor, so
changing the returned descriptor to blocking mode also changes the
existing File to blocking mode. Blocking mode works fine, althoug I/O
operations now take up a thread. SetDeadline and friends rely on the
runtime poller, and the runtime poller only works if the descriptor is
non-blocking. So it's correct that calling Fd disables SetDeadline.
The other half of the truth is that if the program is willing to work
with a non-blocking descriptor, it could call
syscall.SetNonblock(descriptor, true) to change the descriptor, and
the original File, to non-blocking mode. At that point SetDeadline
would start working again. I tried to write that in a way that is
short and comprehensible but failed. Since deadlines mostly work on
pipes, and there isn't much reason to call Fd on a pipe, and few
people use SetDeadline, I decided to punt.

Fixes #22934

Change-Id: I2e49e036f0bcf71f5365193831696f9e4120527c
Reviewed-on: https://go-review.googlesource.com/81636
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2017-12-02 02:11:15 +00:00
Ian Lance Taylor
bfa7a558bf cmd/cgo: for C bitfields use only valid Go integer types
Fixes #22958

Change-Id: Ib078a5f6e1105a2afca77c6d9a05f65ddf5d9010
Reviewed-on: https://go-review.googlesource.com/81435
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Bryan Mills <bcmills@google.com>
2017-12-01 23:50:23 +00:00
Brad Fitzpatrick
ea0d2c14f8 net/url: document Parse more
That Parse doesn't parse ("foo.com/path" or "foo.com:443/path") has
become something of a FAQ.

Updates #19779
Updates #21415
Updates #22955

Change-Id: Ib68efddb67f59b1374e8ed94effd4a326988dee7
Reviewed-on: https://go-review.googlesource.com/81436
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-12-01 23:29:48 +00:00
Robert Griesemer
22b4c83585 go/types: don't use directory foo which might exist under GOPATH
Simply choose an extremely unlikely path name in the test is fine.

Fixes #21013.

Change-Id: I56c0a1986b5ef5d618c7fe2b14701f584fe81c37
Reviewed-on: https://go-review.googlesource.com/81578
Run-TryBot: Robert Griesemer <gri@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2017-12-01 22:37:11 +00:00
Austin Clements
ce5292a1f2 runtime: use MAP_ANON in sigstack check
MAP_ANON is the deprecated but more portable spelling of
MAP_ANONYMOUS. Use MAP_ANON to un-break the Darwin 10.10 builder.

Updates #22930.

Change-Id: Iedd6232b94390b3b2a7423c45cdcb25c1a5b3323
Reviewed-on: https://go-review.googlesource.com/81615
Run-TryBot: Austin Clements <austin@google.com>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2017-12-01 21:52:02 +00:00
Brad Fitzpatrick
8ba0933a69 net/http: speed up and deflake TestServerKeepAlivesEnabled_h2
Fixes #21724

Change-Id: I92571bf228781b17fdf012a2fb52a597c877cefe
Reviewed-on: https://go-review.googlesource.com/81576
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Tom Bergan <tombergan@google.com>
2017-12-01 21:38:29 +00:00
Russ Cox
496688b3cf cmd/go: honor -timeout=0 to mean no timeout
The test binaries accept -timeout=0 to mean no timeout,
but then the backup timer in cmd/go kills the test after 1 minute.
Make cmd/go understand this special case and change
behavior accordingly.

Fixes #14780.

Change-Id: I66bf517173a4ad21d53a5ee88d163f04b8929fb6
Reviewed-on: https://go-review.googlesource.com/81499
Run-TryBot: Russ Cox <rsc@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2017-12-01 21:09:19 +00:00
Russ Cox
7684fe0bf1 cmd/test2json: add ability to run test binary
Also be clear that go test output is not suitable for piping into test2json.

Fixes #22710.
Fixes #22789.

Change-Id: I3d850c8a2288be7f9a27d638bbf847cb8707dcce
Reviewed-on: https://go-review.googlesource.com/81555
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-12-01 21:06:36 +00:00
Russ Cox
7ef9f7250e cmd/go: fix missing conversions in -json output
1. Apply JSON conversion when -bench is in use.
2. Apply JSON conversion to "no test files" result.
3. Apply JSON conversion to test case-ending SKIP status.

Fixes #22769.
Fixes #22790.

Change-Id: I67ad656fc58bacae8c51d23b1e6d543cad190f08
Reviewed-on: https://go-review.googlesource.com/81535
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-12-01 21:06:23 +00:00
Russ Cox
232b2e3352 cmd/go: fix reuse of cached objects during cover
The cover variable indices could vary from build to build,
but they were not included in the build ID hash, so that
reusing the previously built package was not safe.
Make the indices no longer vary from build to build,
so that caching is safe.

Fixes #22652.

Change-Id: Ie26d73c648aadd285f97e0bf39619cabc3da54f2
Reviewed-on: https://go-review.googlesource.com/81515
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-12-01 21:06:14 +00:00
Russ Cox
76dc4b1952 cmd/go: ignore vet typecheck failure during go test
For Go 1.10, works around a go/types bug that can't typecheck
a corner-case type cycle. Once we are confident that bugs like
this are gone from go/types then we can stop ignoring these
failures.

For #22890.

Change-Id: I38da57e01a0636323e1af4484c30871786125df3
Reviewed-on: https://go-review.googlesource.com/81500
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-12-01 21:06:03 +00:00
Russ Cox
2f8bcc8940 cmd/go: accept more spaces in -gcflags arguments
Earlier versions of Go were not very picky about leading spaces
in the -gcflags values. Make the new pattern-enhanced parser
equally lax.

Fixes #22943.

Change-Id: I5cf4d3e81412e895a4b52af325853ed48d0b73f4
Reviewed-on: https://go-review.googlesource.com/81498
Run-TryBot: Russ Cox <rsc@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-12-01 21:05:46 +00:00
Russ Cox
8bb51a73e9 reflect: audit and explain safety of all unsafe.Pointer additions
It's not safe to do p+x with unsafe if that would point past the
end of the object. (Valid in C, not safe in Go.)
Pass a "whySafe" reason (compiled away) to explain at each
call site why it's safe.

Fixes #21733.

Change-Id: I5da8c25bde66f5c9beac232f2135dcab8e8bf3b1
Reviewed-on: https://go-review.googlesource.com/80738
Reviewed-by: Austin Clements <austin@google.com>
2017-12-01 21:05:40 +00:00
Hana Kim
662938850b cmd/trace: exclude threads in syscall on behalf of runtime
The number of threads in syscall presented by execution tracer's
trace view includes not only the threads calling system calls on behalf
of user created goroutines, but also those running on behalf of system
goroutines.

When the number of such system goroutines was small, the graph was
useful when examining where a program was saturating the CPU.
But as more and more system goroutines are invloved the graph became
less useful for the purpose - for example, after golang.org/cl/34784,
the timer goroutines dominate in the graph with large P
because the runtime creates per-P timer goroutines.

This change excludes the threads in syscall on behalf of runtime (system
goroutines) from the visualization. Alternatively, I could visualize the
count of such threads in a separate counter but in the same graph.
Given that many other debug endpoints (e.g. /debug/pprof/goroutine) hide
the system goroutines, including them in the same graph can confuse users.

Update #22574

Change-Id: If758cd6b9ed0596fde9a471e846b93246580b9d5
Reviewed-on: https://go-review.googlesource.com/81315
Reviewed-by: Austin Clements <austin@google.com>
Run-TryBot: Hyang-Ah Hana Kim <hyangah@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2017-12-01 21:00:50 +00:00
Brad Fitzpatrick
7b57e21a07 runtime: skip gdb tests earlier before blocking goroutines in a t.Parallel
Minor.

Makes reading failing runtime test stacktraces easier (by having fewer
goroutines to read) on machines where these gdb tests wouldn't have
ever run anyway.

Change-Id: I3fab0667e017f20ef3bf96a8cc4cfcc614d25b5c
Reviewed-on: https://go-review.googlesource.com/81575
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2017-12-01 20:54:31 +00:00
Austin Clements
2e5011d802 runtime: even more TestStackGrowth timeout debugging
This adds logging for the expected duration of a growStack, plus
progress information on the growStack that timed out.

Updates #19381.

Change-Id: Ic358f8350f499ff22dd213b658aece7d1aa62675
Reviewed-on: https://go-review.googlesource.com/81556
Run-TryBot: Austin Clements <austin@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2017-12-01 20:46:46 +00:00
Robert Griesemer
088a9ad543 cmd/compile: permit indices of certain non-constant shifts
Per the decision for #14844, index expressions that are non-constant
shifts where the LHS operand is representable as an int are now valid.

Fixes #21693.

Change-Id: Ifafad2c0c65975e0200ce7e28d1db210e0eacd9d
Reviewed-on: https://go-review.googlesource.com/81277
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
2017-12-01 20:39:50 +00:00
Austin Clements
aaccb3834c runtime: improve sigsend documentation
I think of "sending" a signal as calling kill, but sigsend is involved
in handling a signal and, specifically delivering it to the internal
signal queue. The term "delivery" is already used in
signalWaitUntilIdle, so this CL also uses it in the documentation for
sigsend.

Change-Id: I86e171f247f525ece884a680bace616fa9a3c7bd
Reviewed-on: https://go-review.googlesource.com/81235
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-12-01 20:34:13 +00:00
Austin Clements
292558be02 runtime: restore the Go-allocated signal stack in unminit
Currently, when we minit on a thread that already has an alternate
signal stack (e.g., because the M was an extram being used for a cgo
callback, or to handle a signal on a C thread, or because the
platform's libc always allocates a signal stack like on Android), we
simply drop the Go-allocated gsignal stack on the floor.

This is a problem for Ms on the extram list because those Ms may later
be reused for a different thread that may not have its own alternate
signal stack. On tip, this manifests as a crash in sigaltstack because
we clear the gsignal stack bounds in unminit and later try to use
those cleared bounds when we re-minit that M. On 1.9 and earlier, we
didn't clear the bounds, so this manifests as running more than one
signal handler on the same signal stack, which could lead to arbitrary
memory corruption.

This CL fixes this problem by saving the Go-allocated gsignal stack in
a new field in the m struct when overwriting it with a system-provided
signal stack, and then restoring the original gsignal stack in
unminit.

This CL is designed to be easy to back-port to 1.9. It won't quite
cherry-pick cleanly, but it should be sufficient to simply ignore the
change in mexit (which didn't exist in 1.9).

Now that we always have a place to stash the original signal stack in
the m struct, there are some simplifications we can make to the signal
stack handling. We'll do those in a later CL.

Fixes #22930.

Change-Id: I55c5a6dd9d97532f131146afdef0b216e1433054
Reviewed-on: https://go-review.googlesource.com/81476
Run-TryBot: Austin Clements <austin@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-12-01 20:20:45 +00:00
Russ Cox
1c55f579be cmd/go: apply same per-package flags to test and xtest builds
If package strings has a particular set of gcflags, then the strings_test
pseudo-package built as part of the test binary should inherit the same flags.

Fixes #22831.

Change-Id: I0e896b6c0f1063454300b7323f577feffbd6650b
Reviewed-on: https://go-review.googlesource.com/81496
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-12-01 19:47:39 +00:00
Russ Cox
4fb0af5d53 cmd/go: fix -x output for test build failure
If the build of the test binary failed, the go command correctly
avoided running the binary, but the -x output indicated otherwise.

Fixes #22659.

Change-Id: Ib4d262bf1735f057c994a45fc23c499d4ebe3246
Reviewed-on: https://go-review.googlesource.com/81495
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-12-01 19:47:30 +00:00
Russ Cox
3716ba0337 cmd/go: fix -outputdir -coverprofile interaction
The CL introducing merged handling of cover profiles
did not correctly account for the fact that the file name argument
to -coverprofile is required to be interpreted relative to
the -outputdir argument.

Fixes #22804.

Change-Id: I804774013c12187313b8fd2044302978bdbb6697
Reviewed-on: https://go-review.googlesource.com/81455
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-12-01 19:47:23 +00:00
Than McIntosh
9372166faa cmd/compile: fix DWARF type symbol buglet
The code that generates the list of DWARF variables for a function
(params and autos) will emit a "no-location" entry in the DWARF for a
user var that appears in the original pre-optimization version of the
function but is no longer around when optimization is complete. The
intent is that if a GDB user types "print foo" (where foo has been
optimized out), the response will be "<optimized out>" as opposed to
"there is no such variable 'foo'). This change fixes said code to
include vars on the autom list for the function, to insure that the
type symbol for the variable makes it to the linker.

Fixes #22941.

Change-Id: Id29f1f39d68fbb798602dfd6728603040624fc41
Reviewed-on: https://go-review.googlesource.com/81415
Run-TryBot: Than McIntosh <thanm@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: David Chase <drchase@google.com>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
2017-12-01 18:52:50 +00:00
Russ Cox
0c0c3c186b sync/atomic: remove noCopy from Value
Values must not be copied after the first use.

Using noCopy makes vet complain about copies
even before the first use, which is incorrect
and very frustrating.

Drop it.

Fixes #21504.

Change-Id: Icd3a5ac3fe11e84525b998e848ed18a5d996f45a
Reviewed-on: https://go-review.googlesource.com/80836
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-12-01 16:38:53 +00:00
Tobias Klauser
08176b28a3 os: drop unused return value in TestLookupEnv
Change-Id: Ibf227dcfefa179b1c3378476bcd17100b1b1c01e
Reviewed-on: https://go-review.googlesource.com/81375
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-12-01 15:43:52 +00:00
Russ Cox
eafa29bdce reflect: fix interface to interface conversion in Call
Call is meant to mirror the language semantics, which allow:

	var r io.ReadWriter
	f := func(io.Reader){}
	f(r)

even though the conversion from io.ReadWriter to io.Reader is
being applied to a nil interface. This is different from an explicit
conversion:

	_ = r.(io.Reader)
	f(r.(io.Reader))

Both of those lines panic, but the implicit conversion does not.

By using E2I, which is the implementation of the explicit conversion,
the reflect.Call equivalent of f(r) was inadvertently panicking.
Avoid the panic.

Fixes #22143.

Change-Id: I6b2f5b808e0cd3b89ae8bc75881e307bf1c25558
Reviewed-on: https://go-review.googlesource.com/80736
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-12-01 15:31:31 +00:00
David Chase
f22cf7131a cmd/compile: use src.NoXPos for entry-block constants
The ssa backend is aggressive about placing constants and
certain other values in the Entry block.  It's implausible
that the original line numbers for these constants makes
any sort of sense when it appears to a user stepping in a
debugger, and they're also not that useful in dumps since
entry-block instructions tend to be constants (i.e.,
unlikely to be the cause of a crash).

Therefore, use src.NoXPos for any values that are explicitly
inserted into a function's entry block.

Passes all tests, including ssa/debug_test.go with both
gdb and a fairly recent dlv.  Hand-verified that it solves
the reported problem; constructed a test that reproduced
a problem, and fixed it.

Modified test harness to allow injection of slightly more
interesting inputs.

Fixes #22558.

Change-Id: I4476927067846bc4366da7793d2375c111694c55
Reviewed-on: https://go-review.googlesource.com/81215
Run-TryBot: David Chase <drchase@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Keith Randall <khr@golang.org>
2017-12-01 07:09:54 +00:00
Brad Fitzpatrick
d4f48e3ff9 os: ignore Chtimes test failure on NetBSD if fs mounted noatime
Fixes #19293

Change-Id: I35f2f786e2e3972eda21ba5a948433bfcd621269
Reviewed-on: https://go-review.googlesource.com/81355
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2017-12-01 04:25:22 +00:00
Brad Fitzpatrick
7e394a23e5 net/http: update bundled http2
Updates http2 to x/net git rev 894f8ed58 for:

    http2: fix flake in net/http's TestCloseIdleConnections_h2
    https://golang.org/cl/80139

    http2: fix leak in activeRes by removing activeRes
    https://golang.org/cl/80137

Fixes #22413
Fixes #21543

Change-Id: Ic8ea20f8ddae2fde17884ed045f9fa7058a4bd23
Reviewed-on: https://go-review.googlesource.com/81276
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Tom Bergan <tombergan@google.com>
2017-12-01 01:16:45 +00:00
Joe Tsai
b53088a634 Revert "go/printer: forbid empty line before first comment in block"
This reverts commit 08f19bbde1.

Reason for revert:
The changed transformation takes effect on a larger set
of code snippets than expected.

For example, this:
    func foo() {

        // Comment
        bar()

    }
becomes:
    func foo() {
        // Comment
        bar()

    }

This is an unintended consequence.

Change-Id: Ifca88d6267dab8a8170791f7205124712bf8ace8
Reviewed-on: https://go-review.googlesource.com/81335
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Run-TryBot: Joe Tsai <joetsai@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2017-12-01 01:12:26 +00:00
Brad Fitzpatrick
2065685664 runtime: use monotonic time on NetBSD
Fixes #6007

Change-Id: I239a1699122e086e907ac1f18b1c86a650e1438a
Reviewed-on: https://go-review.googlesource.com/81135
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Russ Cox <rsc@golang.org>
2017-12-01 00:42:03 +00:00
Matthew Dempsky
bd983a6d2e cmd/compile: fix GOEXPERIMENT checks
GOEXPERIMENT is only set during make.bash, so checking the environment
variable isn't effectual. Instead, check the values exposed by objabi.

These experiments look potentially safe, but it seems too late in the
release cycle to try to assuage that. The one exception is frame
pointer experiment, which is trivially safe: it just amounts to
incrementing some stack offsets by PtrSize.

Fixes #22223.

Change-Id: I46dc7c54b1347143d02d6b9635038230cda6d164
Reviewed-on: https://go-review.googlesource.com/80760
Reviewed-by: Russ Cox <rsc@golang.org>
2017-12-01 00:40:45 +00:00
Russ Cox
f3b24b9f07 testing: remove claim that b.Run is safe for concurrent use
It's not safe (it crashes), and it's also useless: if you run
multiple benchmarks in parallel you will not get reliable
timing results from any of them.

Fixes #18603.

Change-Id: I00e5a72f7c98151543cf7d5573c38383276e391a
Reviewed-on: https://go-review.googlesource.com/80841
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-12-01 00:24:53 +00:00
Russ Cox
301b127a05 runtime/pprof: read memstats earlier in profile handler
Reading the mem stats before our own allocations
avoids cluttering memory stats with our recent garbage.

Fixes #20565.

Change-Id: I3b0046c8300dca83cea24013ffebc32b2ae7f742
Reviewed-on: https://go-review.googlesource.com/80739
Reviewed-by: Austin Clements <austin@google.com>
Run-TryBot: Austin Clements <austin@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2017-12-01 00:23:05 +00:00
Russ Cox
9cc9f10855 archive/zip: add test for Modified vs ModTime behavior
Lock in fix for #22738, submitted in CL 78031.

Fixes #22738.

Change-Id: I6896feb158569e3f12fa7055387cbd7caad29ef4
Reviewed-on: https://go-review.googlesource.com/80635
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Reviewed-by: Joe Tsai <thebrokentoaster@gmail.com>
2017-12-01 00:22:21 +00:00
Tobias Klauser
45c57e5907 os: remove redundant GOOS checks in chown tests
The build tags already prevent the tests from being run on windows or
plan9, so there is no need to check GOOS again.

Change-Id: I74d3c3b7756d9c50f6e5fd4c3e8b0db618fdebbb
Reviewed-on: https://go-review.googlesource.com/81295
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2017-11-30 23:34:49 +00:00
Ian Lance Taylor
eb97160f46 runtime: don't block signals that will kill the program
Otherwise we may delay the delivery of these signals for an arbitrary
length of time. We are already careful to not block signals that the
program has asked to see.

Also make sure that we don't miss a signal delivery if a thread
decides to stop for a while while executing the signal handler.

Also clean up the TestAtomicStop output a little bit.

Fixes #21433

Change-Id: Ic0c1a4eaf7eba80d1abc1e9537570bf4687c2434
Reviewed-on: https://go-review.googlesource.com/79581
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Austin Clements <austin@google.com>
2017-11-30 23:29:30 +00:00