The kqueue based netpoller always registers file descriptors with EVFILT_READ and EVFILT_WRITE.
However only EVFILT_READ notification is supported for regular files.
On FreeBSD a regular file is always reported as ready for writing, resulting in a busy wait.
On Darwin, Dragonfly, NetBSD and OpenBSD, a regular file is reported as ready for both reading and writing only once.
Updates #19093
Change-Id: If284341f60c6c2332fb5499637d4cfa7a4e26b7b
Reviewed-on: https://go-review.googlesource.com/c/156379
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Returning the innermost frame instead of the outermost
makes code that walks the results of runtime.Caller{,s}
still work correctly in the presence of mid-stack inlining.
Fixes#29582
Change-Id: I2392e3dd5636eb8c6f58620a61cef2194fe660a7
Reviewed-on: https://go-review.googlesource.com/c/156364
Run-TryBot: Keith Randall <khr@golang.org>
Reviewed-by: Ian Lance Taylor <iant@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>
In 1.11 we stored "return addresses" in the result of runtime.Callers.
I changed that behavior in CL 152537 to store an address in the call
instruction itself. This CL reverts that part of 152537.
The change in 152537 was made because we now store pcs of inline marks
in the result of runtime.Callers as well. This CL will now store the
address of the inline mark + 1 in the results of runtime.Callers, so
that the subsequent -1 done in CallersFrames will pick out the correct
inline mark instruction.
This CL means that the results of runtime.Callers can be passed to
runtime.FuncForPC as they were before. There are a bunch of packages
in the wild that take the results of runtime.Callers, subtract 1, and
then call FuncForPC. This CL keeps that pattern working as it did in
1.11.
The changes to runtime/pprof in this CL are exactly a revert of the
changes to that package in 152537 (except the locForPC comment).
Update #29582
Change-Id: I04d232000fb482f0f0ff6277f8d7b9c72e97eb48
Reviewed-on: https://go-review.googlesource.com/c/156657
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
The output refers to 'go help modules-get' but the actual command is 'go
help module-get', singular.
Change-Id: Ie001f4181d80d3bf1995af2f257bf789dad5b33f
GitHub-Last-Rev: ce9b90e9a6
GitHub-Pull-Request: golang/go#29605
Reviewed-on: https://go-review.googlesource.com/c/156737
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
The in-tree GDB is too old (6.1.1) on all the builders except the
FreeBSD 12.0 one, where it was removed from the base system.
Update #29508
Change-Id: Ib6091cd86440ea005f3f903549a0223a96621a6f
Reviewed-on: https://go-review.googlesource.com/c/156717
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
With gccgo, if a profiling signal arrives in certain time during
traceback, it may crash or hang. The fix is CL 156037 and
CL 156038. This CL adds a test.
Updates #29448.
Change-Id: Idb36af176b4865b8fb31a85cad185ed4c07ade0c
Reviewed-on: https://go-review.googlesource.com/c/156018
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
The original port of Log1p incorrectly translated a ternary statement
so that a correction was only applied to one of the branches.
Fixes#29488
Change-Id: I035b2fc741f76fe7c0154c63da6e298b575e08a4
Reviewed-on: https://go-review.googlesource.com/c/156120
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Katie Hockman <katie@golang.org>
Reviewed-by: Robert Griesemer <gri@golang.org>
The check below can fail incorrectly if the buildid ends with '-p'.
! stderr 'compile.* -e .*-p [^z]'
This fix changes regular expressions to '-e.* -p' or '-N.* -p' instead
of '-e .*-p'. '-l' is no longer used because the compiler accepts
multiple flags starting with '-l' ('-e' and '-N' do not have this
problem), so there could be false matches.
Change-Id: I827c411de28624019a287f853acc9666e87cbfb9
Reviewed-on: https://go-review.googlesource.com/c/156327
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Mainly to pull in the bug fix in the structtag pass, where filenames
could sometimes be wrong. The bug wasn't present in 1.11, so it was a
regression and needs fixing before 1.12 is out.
Fixes#29130.
Change-Id: Ie9d9bff84873f34d748ebd8f056b6bc2ac822a55
Reviewed-on: https://go-review.googlesource.com/c/156378
Run-TryBot: Daniel Martí <mvdan@mvdan.cc>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Alan Donovan <adonovan@google.com>
The no-cgo validation hack lets in certificates from the root store that
are not marked as roots themselves, but are signed by a root; the cgo
path correctly excludes them. When TestSystemRoots compares cgo and
no-cgo results it tries to ignore them by ignoring certificates which
pass validation, but expired certificates were failing validation.
Letting through expired certs is harmless anyway because we will refuse
to build chains to them.
Fixes#29497
Change-Id: I341e50c0f3426de2763468672f9ba1d13ad6cfba
Reviewed-on: https://go-review.googlesource.com/c/156330
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
On macOS 10.11, but not 10.10 and 10.12, the C API returns 5 old root
CAs which are not in SystemRootCertificates.keychain (but seem to be in
X509Anchors and maybe SystemCACertificates.keychain, along with many
others that the C API does not return). They all are moribund 1024-bit
roots which are now gone from the Apple store.
Since we can't seem to find a way to make the no-cgo code see them,
ignore them rather than skipping the test.
Fixes#21416
Change-Id: I24ff0461f71cec953b888a60b05b99bc37dad2ed
Reviewed-on: https://go-review.googlesource.com/c/156329
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
The compiler appears to contain several squirrelly corner
cases where nodes are double walked, some where new nodes
are created from walked parts. Rather than trust that we
had searched hard enough for the last one, change
exprSwitch.walk() to return immediately if it has already
been walked. This appears to be the only case where
double-walking a node is actually harmful.
Fixes#29562.
Change-Id: I0667e8769aba4c3236666cd836a934e256c0bfc5
Reviewed-on: https://go-review.googlesource.com/c/156317
Run-TryBot: David Chase <drchase@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Keith Randall <khr@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>
These updates have been automatically generated using a modified
version of the updateac command with the following changes:
- code to automatically update the AUTHORS file has been removed,
since we're not updating that file automatically after Go 1.11
(see CL 128877)
- CLA checking code has been removed, since it was primarily needed
for updating the AUTHORS file
- instead of executing the misc/sortac binary, its code was embedded
into the updateac command itself
The modified updateac command will be added to x/build repository soon,
and the misc/sortac command can be removed afterwards.
Updates #12042
Change-Id: Ibf73068698b14b1aad4df4490747b488508ff5fd
Reviewed-on: https://go-review.googlesource.com/c/156278
Reviewed-by: Filippo Valsorda <filippo@golang.org>
We still don't understand what's causing there to be remaining GC work
when we enter mark termination, but in order to move forward on this
issue, this CL implements a work-around for the problem.
If debugCachedWork is false, this CL does a second check for remaining
GC work as soon as it stops the world for mark termination. If it
finds any work, it starts the world again and re-enters concurrent
mark. This will increase STW time by a small amount proportional to
GOMAXPROCS, but fixes a serious correctness issue.
This works-around #27993.
Change-Id: Ia23b85dd6c792ee8d623428bd1a3115631e387b8
Reviewed-on: https://go-review.googlesource.com/c/156140
Run-TryBot: Austin Clements <austin@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Reviewed-by: Rick Hudson <rlh@golang.org>
This test case failed on the longtest builder. It relied on
runtime/internal/atomic not being compiled with the -l flag in the
cache. The test case now creates its own GOCACHE, similar to
build_cache_compile and a few others.
Also, mention the correct issue the test case verifies.
Fixes#29395
Change-Id: Id50e9dfc50db03fb11582d3dd6b69c3e1ed750eb
Reviewed-on: https://go-review.googlesource.com/c/156237
Run-TryBot: Jay Conrod <jayconrod@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
As a followon to CL 152537, modify the panic-printing traceback
to also handle mid-stack inlining correctly.
Also declare -fm functions (aka method functions) as wrappers, so that
they get elided during traceback. This fixes part 2 of #26839.
Fixes#28640Fixes#24488
Update #26839
Change-Id: I1c535a9b87a9a1ea699621be1e6526877b696c21
Reviewed-on: https://go-review.googlesource.com/c/153477
Reviewed-by: David Chase <drchase@google.com>
Use the length of the bitmap to decide how much to pass to the
write barrier, not the total length of the arguments.
The test needs enough arguments so that two distinct bitmaps
get interpreted as a single longer bitmap.
Update #29362
Change-Id: I78f3f7f9ec89c2ad4678f0c52d3d3def9cac8e72
Reviewed-on: https://go-review.googlesource.com/c/156123
Run-TryBot: Keith Randall <khr@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Austin Clements <austin@google.com>
After CL 31455, "go fun(n)" may put "n" to write barrier buffer
when there are no pointers in fun's arguments.
Fixes#29362
Change-Id: Icfa42b8759ce8ad9267dcb3859c626feb6fda381
Reviewed-on: https://go-review.googlesource.com/c/155779
Reviewed-by: Keith Randall <khr@golang.org>
In the twoNonZero function in hash_test, the buffer is sliced as [:] three times. This change deletes them.
Change-Id: I0701d0c810b4f3e267f80133a0dcdb4ed81fe356
Reviewed-on: https://go-review.googlesource.com/c/156138
Reviewed-by: Keith Randall <khr@golang.org>
Run-TryBot: Keith Randall <khr@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Fixes bug introduced by https://golang.org/cl/129059 where
gcflags='all=...' and ldflags='all=...' would not be applied to some
packages built by 'go test'.
LoadImport used to set gcflags/ldflags for the Package objects it
created, in https://golang.org/cl/129059 this code was factored out to
setToolFlags. The codepath of `go build` was updated to call
setToolFlags appropriatley, but the codepath of `go test -c` wasn't,
resulting in gcflags/ldflags being applied inconsistently when building
tests.
This commit changes TestPackagesFor to call setToolFlags on the package
objects it creates.
Fixes#27681
Change-Id: Idcbec0c989ee96ec066207184611f08818873e8d
Reviewed-on: https://go-review.googlesource.com/c/136275
Run-TryBot: Jay Conrod <jayconrod@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Jay Conrod <jayconrod@google.com>
CL 152537 introduced a new use for ginsnop, the arch-dependent
routine that generates nops. The previous s390x nop clobbered flags.
It turns out the previous uses of this nop did not require flags
to be preserved, but the new use does.
Use a real nop: the 4-byte preferred nop.
Fixes#29453
Change-Id: I95310dfdd831932e26f5d5b6608324687f4c3162
Reviewed-on: https://go-review.googlesource.com/c/155926
Reviewed-by: Michael Munday <mike.munday@ibm.com>
Recent changes to compiler backtraces perturbed the line
number assignment, some better, some worse, probably net
worse. For purposes of passing the long tests, update the
reference files (delve's file was also stale).
TODO: Figure out a less delicate way to locate statement
boundaries for 1.13.
Fixes#29511.
Change-Id: If0e488341d848ba6012045b126c86b1250408d65
Reviewed-on: https://go-review.googlesource.com/c/156021
Run-TryBot: David Chase <drchase@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Currently it's possible for the runtime to deadlock if checkPut is
called in a non-preemptible context. In this case, checkPut may spin,
so it won't leave the non-preemptible context, but the thread running
gcMarkDone needs to preempt all of the goroutines before it can
release the checkPut spin loops.
Fix this by returning from checkPut if it's called under any of the
conditions that would prevent gcMarkDone from preempting it. In this
case, it leaves a note behind that this happened; if the runtime does
later detect left-over work it can at least indicate that it was
unable to catch it in the act.
For #27993.
Updates #29385 (may fix it).
Change-Id: Ic71c10701229febb4ddf8c104fb10e06d84b122e
Reviewed-on: https://go-review.googlesource.com/c/156017
Run-TryBot: Austin Clements <austin@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rick Hudson <rlh@golang.org>
In the case of x+d >= w, where d and w are constants, we are
deriving x is within the bound of min=w-d and max=maxInt-d. When
there is an overflow (min >= max), we know only one of x >= min
or x <= max is true, and we derive this by excluding the other.
When excluding x >= min, we did not consider the equal case, so
we could incorrectly derive x <= max when x == min.
Fixes#29502.
Change-Id: Ia9f7d814264b1a3ddf78f52e2ce23377450e6e8a
Reviewed-on: https://go-review.googlesource.com/c/156019
Reviewed-by: David Chase <drchase@google.com>
