This fixes a data race (usually just harmlessly updating
"GET" to "GET"), but also follows RFC 2616 Sec 5.1.1 which
says that the request method is case-sensitive.
Darwin kernels have a bug in accept() where error result from
an internal call is not checked and socket is accepted instead
of ECONNABORTED error. However, such sockets have no sockaddr,
which results in EAFNOSUPPORT error from anyToSockaddr, making
Go http servers running on Mac OS X easily susceptible to
denial of service from simple port scans with nmap.
Fixes #3849.
David Symonds [Sun, 29 Jul 2012 22:48:51 +0000 (08:48 +1000)]
misc/vim: fix :Import insertion heuristic.
If a factored import group has a blank line, assume it is dividing
separate groups of imports (e.g. standard library vs. site-specific).
import (
"bytes"
"io"
"mycorp/package"
)
The most common case is inserting new standard library imports,
which are usually (stylistically) the first group, so we should drop
"net" in the above example immediately after "io".
Since this logic is getting non-trivial, add a test.
exp/locale/collate: changed trie in first step towards support for multiple locales.
- Allow handles into the trie for different locales. Multiple tables share the same
try to allow for reuse of blocks.
- Significantly improved memory footprint and reduced allocations of trieNodes.
This speeds up generation by about 30% and allows keeping trieNodes around
for multiple locales during generation.
- Renamed print method to fprint.
Ian Lance Taylor [Fri, 27 Jul 2012 05:46:20 +0000 (22:46 -0700)]
runtime: ignore signal 33 == SIGSETXID on GNU/Linux
When a cgo program calls setuid, setgid, etc., the GNU/Linux
pthread library sends signal SIGSETXID to each thread to tell
it to update its UID info. If Go is permitted to intercept
the default SIGSETXID signal handler, the program will hang.
This patch tells the runtime package to not try to intercept
SIGSETXID on GNU/Linux. This will be odd if a Go program
wants to try to use that signal, but it means that cgo
programs that call setuid, etc., won't hang.
Robert Griesemer [Fri, 27 Jul 2012 00:09:11 +0000 (17:09 -0700)]
go/printer: don't crash if ast.FuncType.Params is nil
The go/ast comment for FuncType.Params says that the field may be nil.
Make sure the printer accepts such a value. The go/parser always sets
the field (to provide parenthesis position information), but a program
creating a Go AST from scatch may not.
Added corresponding test case.
Fixes #3870.
R=golang-dev, r
CC=golang-dev
https://golang.org/cl/6448060
Rob Pike [Mon, 23 Jul 2012 23:19:12 +0000 (16:19 -0700)]
text/template: fix bug in map indexing
If the key is not present, return value of the type of the element
not the type of the key. Also fix a test that should have caught this case.
Rob Pike [Mon, 23 Jul 2012 20:34:46 +0000 (13:34 -0700)]
encoding/gob: revert 6348067, which broke compatibility
Add commentary to explain better what's going on, but the
code change is a simple one-line reversal to the previous
form.
build: add few tests with GOMAXPROCS=32 to run.bash
Some class of bugs (data races, runtime bugs) can be found
only with real parallelism.
Note that GOMAXPROCS=32 is somewhat different from go test -cpu=32,
this intentionally uses GOMAXPROCS to stress program bootstrap,
testing code, garbage collections, etc.
Package selection is mostly random.
R=golang-dev, dave, r
CC=golang-dev
https://golang.org/cl/6346070
Rob Pike [Fri, 13 Jul 2012 21:23:51 +0000 (14:23 -0700)]
encoding/gob: disable fuzz tests unless command-line flag is set
They can generate huge amounts of memory, causing failure on
small machines. Also they can be very slow. So slow that one test
was commented out! We uncomment it and use a flag.
exp/locale/collate: This CL includes the following changes:
- Changed the representation of colElem to support a few cases
for some languages not supported by the current format.
- Changed offsets for implicit primary values. This makes the
values both easier to read and debug (last 4 nibbles are identical to
implicit primary value) and also results in better packing.
- Fixed bug in weight conversion code that did not pop up yet by
sheer luck.
Note that tables.go also includes changes to the contraction trie
from CL 6346092.
exp/locale/collate: adjusted contraction trie to support Myanmar (Burmese),
which has a rather large contraction table. The value of the next state
offset now starts after the current block, instead of before. This is
slightly less efficient (on extra addition per state change), but gives
some extra range for the offsets.
Also introduced constants for final (0) and noIndex (0xFF).
tables.go is updated in a separate CL.
Rob Pike [Fri, 13 Jul 2012 03:53:17 +0000 (20:53 -0700)]
encoding/gob: reduce decoder memory
Gob decoding reads a whole message into memory and then
copies it into a bytes.Buffer. For large messages this wastes
an entire copy of the message. In this CL, we use a staging
buffer to avoid the large temporary.
Update #2539
RSS drops to 775MB from 1GB.
Active memory drops to 858317048 from 1027878136,
essentially the size of one copy of the input file.
math/big: correct quadratic space complexity in Mul.
The previous implementation used to have a O(n) recursion
depth for unbalanced inputs. A test is added to check that a
reasonable amount of bytes is allocated in this case.
Adam Langley [Wed, 11 Jul 2012 16:47:12 +0000 (12:47 -0400)]
crypto/rsa: left-pad PKCS#1 v1.5 outputs.
OpenSSL requires that RSA signatures be exactly the same byte-length
as the modulus. Currently it'll reject ~1/256 of our signatures: those
that end up a byte shorter.
Fixes #3796.
R=golang-dev, edsrzf, r
CC=golang-dev
https://golang.org/cl/6352093
Adam Langley [Tue, 10 Jul 2012 22:23:30 +0000 (18:23 -0400)]
encoding/asn1: promote untyped strings to UTF8 as needed.
Previously, strings that didn't have an explicit ASN.1 string type
were taken to be ASN.1 PrintableStrings. This resulted in an error if
a unrepresentable charactor was included.
For compatibility reasons, I'm too afraid to switch the default string
type to UTF8String, but this patch causes untyped strings to become
UTF8Strings if they contain a charactor that's not valid in a
PrintableString.
Fixes #3791.
R=golang-dev, bradfitz, r, r
CC=golang-dev
https://golang.org/cl/6348074
David G. Andersen [Sun, 8 Jul 2012 23:16:10 +0000 (09:16 +1000)]
pkg: Removing duplicated words ("of of", etc.), mostly from comments.
Ran 'double.pl' on the pkg tree to identify doubled words.
One change to an error string return in x509; the rest are in comments.
Thanks to Matt Jibson for the idea.
Made the following changes:
- Export errprintf() from all three OS-specific modules
- Added errprintf() to a.h
- Moved errprintf() in windows.c under xprintf(), since they are so similar
- Replaced all instances of xprintf() with errprintf() where a vflag check is done
Fixes #3788.
Shenghou Ma [Thu, 5 Jul 2012 20:52:13 +0000 (16:52 -0400)]
misc/chrome/gophertool: fix manifest
according to http://code.google.com/chrome/extensions/browserAction.html,
it should use "default_popup" instead of "popup".
runtime: move panic/defer/recover-related stuff to a separate file
Move panic/defer/recover-related stuff from proc.c/runtime.c to a new file panic.c.
No semantic changes.
proc.c is 1800+ LOC and is a bit difficult to work with.
R=golang-dev, dave, r
CC=golang-dev
https://golang.org/cl/6343071
The use of math.Pow for mere squaring can be extremely
slow on soft-float ARM. Even on systems with hardware
floating-point, a speedup in test duration is observed.
On amd64
Before: ok math/rand 2.009s
After: ok math/rand 0.340s
Fixes #3740.
R=dave, golang-dev, r, r
CC=golang-dev
https://golang.org/cl/6348061
David G. Andersen [Tue, 3 Jul 2012 15:16:43 +0000 (08:16 -0700)]
syscall: fix FreeBSD 386 sendfile
The previous version was not handling an off_t (64 bit)
parameter on 32 bit i386 systems. This patch splits sendfile
into two implementations in their respective arch-specific files.
Tested on FreeBSD amd64 and i386.
runtime: refactor proc.c
1. Rename 'g' and 'm' local vars to 'gp' and 'mp' (convention already used in some functions)
'g' and 'm' are global vars that mean current goroutine and current machine,
when they are shadowed by local vars, it's confusing, no ability to debug log both, etc.
2. White-space shuffling.
No semantic changes.
In preparation to bigger changes.
R=golang-dev, dave
CC=golang-dev
https://golang.org/cl/6355061
Nigel Tao [Mon, 2 Jul 2012 23:09:05 +0000 (09:09 +1000)]
cmd/gc: cache itab lookup in convT2I.
There may be further savings if convT2I can avoid the function call
if the cache is good and T is uintptr-shaped, a la convT2E, but that
will be a follow-up CL.
src/pkg/runtime:
benchmark old ns/op new ns/op delta
BenchmarkConvT2ISmall 43 15 -64.01%
BenchmarkConvT2IUintptr 45 14 -67.48%
BenchmarkConvT2ILarge 130 101 -22.31%
David G. Andersen [Mon, 2 Jul 2012 22:30:00 +0000 (15:30 -0700)]
math/big: Remove unnecessary test from nat.go multiplication
The switch at the beginning of the function already ensures n > 1,
so testing for n < 2 is redundant.
reflect: set GOMAXPROCS=1 in the malloc test
Occasionally I see:
--- FAIL: TestAllocations-15 (0.00 seconds)
all_test.go:1575: 6 mallocs after 100 iterations
Tested:
$ go test -cpu=1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20 reflect
R=golang-dev, dsymonds, r
CC=golang-dev
https://golang.org/cl/6354063