Change-Id: I89c61e444b3ab36f0081a5252d210cb265344122
Reviewed-on: https://go-review.googlesource.com/c/go/+/264157
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Alex Brainman <alex.brainman@gmail.com>
Trust: Alex Brainman <alex.brainman@gmail.com>
Disable default symbol auto-export behaviour by marking exported
function with the __declspec(dllexport) attribute. Old behaviour can
still be used by setting -extldflags=-Wl,--export-all-symbols.
See https://sourceware.org/binutils/docs/ld/WIN32.html for more info.
This change cuts 50kb of a "hello world" dll.
Updates #6853Fixes#30674
Change-Id: I9c7fb09c677cc760f24d0f7d199740ae73981413
Reviewed-on: https://go-review.googlesource.com/c/go/+/262797
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Alex Brainman <alex.brainman@gmail.com>
Trust: Alex Brainman <alex.brainman@gmail.com>
This is somewhat academic (and no tests failed before this commit),
since func atof64 only calls func eiselLemire when func atof64exact
fails, and func atof64exact doesn't fail when parsing positive or
negative zeroes. But it's still worth fixing.
Change-Id: Ibe6ef4c8fd96827673b711d5456003fbc447e39c
Reviewed-on: https://go-review.googlesource.com/c/go/+/264140
Trust: Nigel Tao <nigeltao@golang.org>
Trust: Robert Griesemer <gri@golang.org>
Reviewed-by: Robert Griesemer <gri@golang.org>
In https://golang.org/cl/263357, I wasn't thinking that the assembly
file without a GOARCH suffix would be built for all architectures. Only
build assembly for amd64, and update the stderr matching line.
I manually verified that this works on 386; since the only Go file in
that package is a stub, and no assembly files match GOARCH=386, no
assembly is built at all.
Change-Id: Ief3c6c9bdc223f342821b0ec27f00098fc25246a
Reviewed-on: https://go-review.googlesource.com/c/go/+/264457
Trust: Daniel Martí <mvdan@mvdan.cc>
Run-TryBot: Daniel Martí <mvdan@mvdan.cc>
Reviewed-by: Bryan C. Mills <bcmills@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Use sym.Size, instead of len(sym.P), to decide whether a
content-addressable symbol is "short" and hashed as Hashed64.
So we don't dedup a small symbol with a gigantic almost-zero
symbol.
Fixes#42140.
Change-Id: Ic65869e1eaf51947517b3ece49c8b0be1b94bb75
Reviewed-on: https://go-review.googlesource.com/c/go/+/264337
Trust: Cherry Zhang <cherryyz@google.com>
Trust: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Run-TryBot: Cherry Zhang <cherryyz@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Reviewed-by: Than McIntosh <thanm@google.com>
The Go toolchain has supported the simulator for years, but always in
buildmode=c-archive which is intrinsically externally linked and PIE.
This CL moves that support from GOOS=darwin GOARCH=amd64 -tags=ios to
just GOOS=ios GOARCH=amd64 to match the change for iOS devices.
This change also forces external linking and defaults to buildmode=pie
to support Go binaries in the default buildmode to run on the simulator.
CL 255257 added the necessary support to the exec wrapper.
Updates #38485Fixes#42100
Change-Id: I6e6ee0e8d421be53b31e3d403880e5b9b880d031
Reviewed-on: https://go-review.googlesource.com/c/go/+/263798
Reviewed-by: Austin Clements <austin@google.com>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
Trust: Elias Naur <mail@eliasnaur.com>
Currently the AddrRange used for testing is defined separately from
addrRange in the runtime, making it difficult to test it as well as
addrRanges. Redefine AddrRange in terms of addrRange instead.
For #40191.
Change-Id: I3aa5b8df3e4c9a3c494b46ab802dd574b2488141
Reviewed-on: https://go-review.googlesource.com/c/go/+/242677
Trust: Michael Knyszek <mknyszek@google.com>
Run-TryBot: Michael Knyszek <mknyszek@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Michael Pratt <mpratt@google.com>
Reviewed-by: Austin Clements <austin@google.com>
This way, a -toolexec tool can tell precisely what package is being
built when it's run. This was very hard to do before, because the tool
had to piece together that information given the build action's
arguments or flags.
Since there wasn't a good set of tests for -toolexec, add one in the
form of a test script. It builds a simple set of packages with a variety
of build tools, to ensure that all the cases behave as expected.
Like other recent master changes, include the changelog item for this
user-facing change too.
Fixes#15677.
Change-Id: I0a5a1d9485840323ec138b2e64b7e7dd803fdf90
Reviewed-on: https://go-review.googlesource.com/c/go/+/263357
Run-TryBot: Daniel Martí <mvdan@mvdan.cc>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Bryan C. Mills <bcmills@google.com>
Trust: Daniel Martí <mvdan@mvdan.cc>
Current linkmode checking in determining package dependencies doesn't
take multiple -linkmode options into consideration, may lead to redundant
dependency on 'runtime/cgo'.
Fixes the problem and adds a testcase.
Change-Id: Iac5ea9fb3ca5ef931201afd0f3441f41f946c919
Reviewed-on: https://go-review.googlesource.com/c/go/+/263497
Trust: Jay Conrod <jayconrod@google.com>
Reviewed-by: Bryan C. Mills <bcmills@google.com>
Bring in updates to golang.org/x/arch/ppc64 to add new
instructions from CLs 260617, 230957, 249158.
Used the directions found in README.vendor:
cd $GOROOT/src/cmd
go get -d golang.org/x/arch@latest
go mod tidy
go mod vendor
Change-Id: Ie8ceb9c804928b72b37fff5b63981c174fb86989
Reviewed-on: https://go-review.googlesource.com/c/go/+/264079
Trust: Lynn Boger <laboger@linux.vnet.ibm.com>
Run-TryBot: Lynn Boger <laboger@linux.vnet.ibm.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
Adding "." Prefix Check for go files.
Fixes#42047
Change-Id: Ifc42bf562f52fdd304f9828b06fc57888fcd8049
Reviewed-on: https://go-review.googlesource.com/c/go/+/264078
Reviewed-by: Bryan C. Mills <bcmills@google.com>
Run-TryBot: Bryan C. Mills <bcmills@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Trust: Jay Conrod <jayconrod@google.com>
Trust: Bryan C. Mills <bcmills@google.com>
Now "go clean" can remove binary as expected, when module enabled and the module name isn't "main" or the name of folder.
Fixes issue #41656
Change-Id: I54b9435ece045e03a12dc230efe84c8dd381a07c
GitHub-Last-Rev: f4ea2d8c76
GitHub-Pull-Request: golang/go#41999
Reviewed-on: https://go-review.googlesource.com/c/go/+/262677
Run-TryBot: Jay Conrod <jayconrod@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Jay Conrod <jayconrod@google.com>
Reviewed-by: Bryan C. Mills <bcmills@google.com>
Trust: Jay Conrod <jayconrod@google.com>
Trust: Bryan C. Mills <bcmills@google.com>
gc debug flags are currently stored in a 256-long array, that is then
addressed using the ASCII numeric value of the flag itself (a quirk
inherited from the old C compiler). It is also a little wasteful,
since we only define 16 flags, and the other 240 array elements are
always empty.
This change makes Debug a struct, which also provides static checking
that we're not referencing flags that does not exist.
Change-Id: I2f0dfef2529325514b3398cf78635543cdf48fe0
Reviewed-on: https://go-review.googlesource.com/c/go/+/263539
Trust: Alberto Donizetti <alb.donizetti@gmail.com>
Run-TryBot: Alberto Donizetti <alb.donizetti@gmail.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
The code in this CL does the work of looking for the "embed" import
and then finding and recording the arguments to //go:embed lines
in Go source files. The go command will use this information to prepare
information about embedded files to pass to the compiler.
The tests of the Package fields end up being end-to-end via the
go command (added in the CL with the go command changes),
like all the other Package fields.
For #41191.
Change-Id: I0c87b71ca809c0031603cc403c030d3088299e6b
Reviewed-on: https://go-review.googlesource.com/c/go/+/243941
Trust: Russ Cox <rsc@golang.org>
Trust: Jay Conrod <jayconrod@google.com>
Run-TryBot: Russ Cox <rsc@golang.org>
Reviewed-by: Jay Conrod <jayconrod@google.com>
Showing users how to accomplish this more easily is a compromise
between doing nothing and adding a new API to the net package.
Fixes#38506.
Change-Id: I43f831cf94951c987cf3c8c1aa55f0012ee8034e
Reviewed-on: https://go-review.googlesource.com/c/go/+/263417
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Trust: Brad Fitzpatrick <bradfitz@golang.org>
Fixes the check for the reserved namespace prefix
"xml" to be case insensitive, so as to match all variants of:
(('X'|'x')('M'|'m')('L'|'l'))
as mandated by Section 2.3 of https://www.w3.org/TR/REC-xml/
This is a roll forward of CL 203417, which was rolled back by CL 240179.
We've decided that the roll back was incorrect, and any broken tests
should be fixed.
The original CL 203417 was by Tamás Gulácsi.
Fixes#35151
For #39876
Change-Id: I2e6daa7aeb252531fba0b8a56086613e13059528
Reviewed-on: https://go-review.googlesource.com/c/go/+/264024
Trust: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Damien Neil <dneil@google.com>
Reviewed-by: Emmanuel Odeke <emm.odeke@gmail.com>
Fixes#39186
Change-Id: I624ab73b3083f190978c09716672ce1b712a5c81
Reviewed-on: https://go-review.googlesource.com/c/go/+/264082
Run-TryBot: Keith Randall <khr@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Trust: Keith Randall <khr@golang.org>
Tests that if the combination of:
* HTTP multipart file payload size
* ParseMultipartForm's maxMemory parameter
* the internal leeway buffer size of 10MiB
overflows, then we'll report an overflow instead of silently
passing.
Reapplies and fixes CL 254977, which was reverted in CL 263658.
The prior test lacked a res.Body.Close(), so fixed that and
added a leaked Transport check to verify correctness.
Updates 40430.
Change-Id: I3c0f7ef43d621f6eb00f07755f04f9f36c51f98f
Reviewed-on: https://go-review.googlesource.com/c/go/+/263817
Run-TryBot: Emmanuel Odeke <emm.odeke@gmail.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Bryan C. Mills <bcmills@google.com>
Trust: Damien Neil <dneil@google.com>
The other named errors - UnmarshalTypeError, etc - in this package do
the same, so we should prepend the package prefix to error messages
for consistency.
Add a note to the release docs in case this is interpreted as
a breaking change.
Fixes#36221.
Change-Id: Ie24b532bbf9812e108c259fa377e2a6b64319ed4
Reviewed-on: https://go-review.googlesource.com/c/go/+/263619
Run-TryBot: Kevin Burke <kev@inburke.com>
TryBot-Result: Go Bot <gobot@golang.org>
Trust: Kevin Burke <kev@inburke.com>
Trust: Daniel Martí <mvdan@mvdan.cc>
Reviewed-by: Daniel Martí <mvdan@mvdan.cc>
Bypasses the signature verification check we previously added if the
signature algorithm is MD5WithRSA, as we only support this algorithm
for signing and not verification.
Change-Id: Idba6dbba8b365d6199d467526746b88a5f734af1
Reviewed-on: https://go-review.googlesource.com/c/go/+/264019
Run-TryBot: Roland Shoemaker <roland@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Filippo Valsorda <filippo@golang.org>
Trust: Roland Shoemaker <roland@golang.org>
The original riscv64 port used the thread pointer (TP aka X4) register for
the g pointer, however this register is also used when TLS support is
required, resulting in a conflict (for example, when a signal is received
we have no way of readily knowing if X4 contains a pointer to the TCB or
a pointer to a g).
In order to support cgo, free up the X4 register by moving g to X27.
This unfortunately means that the X4 register is unused in non-cgo mode,
however the alternative is to not support cgo on this platform.
Update #36641
Change-Id: Idcaf3e8ccbe42972a1b8943aeefde7149d9c960a
Reviewed-on: https://go-review.googlesource.com/c/go/+/263477
Trust: Joel Sing <joel@sing.id.au>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
Fixes#42115
Change-Id: Icf4c9eac5ed3295acbc8377c7a06f82c6bddc747
Reviewed-on: https://go-review.googlesource.com/c/go/+/264177
Trust: Bryan C. Mills <bcmills@google.com>
Trust: Jay Conrod <jayconrod@google.com>
Run-TryBot: Bryan C. Mills <bcmills@google.com>
Reviewed-by: Jay Conrod <jayconrod@google.com>
Reviewed-by: David du Colombier <0intro@gmail.com>
TryBot-Result: Go Bot <gobot@golang.org>
This happens with 'go env' and 'go bug'.
If GOFLAGS variable is set to something like '=value',
running `go env` panics with this error message:
goroutine 1 [running]:
cmd/go/internal/base.SetFromGOFLAGS(0xd96838)
cmd/go/internal/base/goflags.go:101 +0x9a7
main.main()
cmd/go/main.go:188 +0x755
This happens when the 'name' of the flag is not
specified ('=' or '=value'), with any combination of other flags.
Other commands show this error message:
go: parsing $GOFLAGS: non-flag
This happens only with 'env' and 'bug' because we have this:
https://go.googlesource.com/go/+/refs/heads/master/src/cmd/go/internal/base/goflags.go#40
New behaviour: ignore the bad flag, since we don't want to report
that with `go env` or `go bug`.
Fixes: #42013
Change-Id: I72602840ca00293d2a92ea28451b75b9799e3d6c
Reviewed-on: https://go-review.googlesource.com/c/go/+/263098
Reviewed-by: Bryan C. Mills <bcmills@google.com>
Run-TryBot: Bryan C. Mills <bcmills@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Trust: Michael Matloob <matloob@golang.org>
wasm_exec.js expects that either "require" is available or that the
globals "crypto", "TextEncoder" and "TextDecoder" are already defined.
Report a better error message if this is not the case, suggesting the
use of a polyfill.
Updates #41482
Change-Id: I5473cae15c98ae42e39f5928245b7762e7a5a8bf
Reviewed-on: https://go-review.googlesource.com/c/go/+/261357
Trust: Richard Musiol <neelance@gmail.com>
Run-TryBot: Richard Musiol <neelance@gmail.com>
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Reviewed-by: Cherry Zhang <cherryyz@google.com>
An i32 passed from WebAssembly to JavaScript is always read as a signed
integer. Use the bitshift operator to turn it into an unsigned integer.
Fixes#40923
Change-Id: Ia91ed2145dd2fc3071e2fc22b86ebfcb3c1e9f4f
Reviewed-on: https://go-review.googlesource.com/c/go/+/261358
Trust: Richard Musiol <neelance@gmail.com>
Run-TryBot: Richard Musiol <neelance@gmail.com>
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Reviewed-by: Cherry Zhang <cherryyz@google.com>
Now that external linking is supported on linux/riscv64 (CL 243517),
re-enable the test previously disabled by CL 216259.
Updates #36739
Change-Id: I611548c587ca50f8bfab72c903ab0432e2b54198
Reviewed-on: https://go-review.googlesource.com/c/go/+/263797
Trust: Tobias Klauser <tobias.klauser@gmail.com>
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
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Reviewed-by: Joel Sing <joel@sing.id.au>
Small fix for a new failure in CL 263142
For #41190
Change-Id: I733bc1998d87b505b52d429916c45afe2968a709
Reviewed-on: https://go-review.googlesource.com/c/go/+/264057
Run-TryBot: Jay Conrod <jayconrod@google.com>
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Trust: Jay Conrod <jayconrod@google.com>
Reviewed-by: Bryan C. Mills <bcmills@google.com>
The Dbg dumping of complex types was broken, because (I think) of a
recent change to handle recursive types correctly. Before this fix,
the Dump output of a closure node (where the last thing on the line is
the type of the node) was:
. . CLOSURE l(8) esc(h) tc(1) FUNC-@0
after this change it is:
. . CLOSURE l(8) esc(h) tc(1) FUNC-func(int) int
The problem is that that the 'mode == Fdbg' code was immediately
aborting the descent into tconv2, since it was calling down with the
same node that was just entered into the hash table.
Change-Id: Iee106b967cea1856dd92d4350681401dd34a23b3
Reviewed-on: https://go-review.googlesource.com/c/go/+/264025
Trust: Dan Scales <danscales@google.com>
Reviewed-by: Keith Randall <khr@golang.org>
Supports 386 and amd64 architectures on all operating systems.
Example output:
$ go test -bench=.*
goos: darwin
goarch: amd64
pkg: strconv
cpu: Intel(R) Core(TM) i7-3520M CPU @ 2.90GHz
BenchmarkAtof64Decimal-4 24431032 46.8 ns/op
...
As the displayed CPU information is only used for information
purposes it is lazily initialized when needed using the new
internal/sysinfo package.
This allows internal/cpu to stay without dependencies and avoid
initialization costs when the CPU information is not needed as
the new code to query the CPU name in internal/cpu can be
dead code eliminated if not used.
Fixes#39214
Change-Id: I77ae5c5d2fed6b28fa78dd45075f9f0a6a7f1bfd
Reviewed-on: https://go-review.googlesource.com/c/go/+/263804
Trust: Martin Möhrmann <moehrmann@google.com>
Reviewed-by: Keith Randall <khr@golang.org>
Make code cleaner and a bit more adaptable:
instead of an ever-growing list of arguments and results for readImports,
put everything in a fileInfo struct, and rename function to readGoInfo.
(Not a goInfo struct because it gets used for non-Go source files as well,
but that processing is much simpler.)
The refactoring simplifies the embed work in the next CL,
but this CL makes no semantic changes.
For #41191.
Change-Id: Id2de2a3b8d351adc1c919dcf79dfbe79fc3d5301
Reviewed-on: https://go-review.googlesource.com/c/go/+/243940
Trust: Russ Cox <rsc@golang.org>
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Jay Conrod <jayconrod@google.com>
Try to get a bit more information to understand #42093.
For #42093
Change-Id: I818feb08d7561151d52eba3e88c418b55b9f9c1e
Reviewed-on: https://go-review.googlesource.com/c/go/+/264018
Trust: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Bryan C. Mills <bcmills@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
The main missing piece here was supporting Stat in the overlay
filesystem, in the parts of the package code that determines whether
an command line argument is a file on disk or a directory. so this
change adds a Stat function to the fsys package. It's implemented the
same way as the already existing fsys.lstat function, but instead of
os.Lstat, it calls os.Stat on disk files.
Then, the change changes parts of the package code to use the overlay
Stat instead of the os package's Stat.
For #39958
Change-Id: I8e478ae386f05b48d7dd71bd7e47584f090623df
Reviewed-on: https://go-review.googlesource.com/c/go/+/262617
Trust: Michael Matloob <matloob@golang.org>
Run-TryBot: Michael Matloob <matloob@golang.org>
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Reviewed-by: Jay Conrod <jayconrod@google.com>
We never supported symbol larger than 2GB (issue #9862), so the
object file uses 32-bit for symbol sizes. Check and reject too
large symbol before truncating its size.
Fixes#42054.
Change-Id: I0d1d585ebdba9556f2fd3a97043bd4296d5cc9e4
Reviewed-on: https://go-review.googlesource.com/c/go/+/263641
Trust: Cherry Zhang <cherryyz@google.com>
Trust: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Run-TryBot: Cherry Zhang <cherryyz@google.com>
Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com>
TryBot-Result: Go Bot <gobot@golang.org>
Previously, when running cmd/go tests, if the module root directory is
requested when modules are explicitly disabled, we printed a stack
trace in addition to the error message that's normally printed. The
stack trace isn't that useful, and it makes the actual error hard to
find.
Change-Id: I8230d668f3f16659f08d0d685124c41b4055c5b9
Reviewed-on: https://go-review.googlesource.com/c/go/+/263659
Trust: Jay Conrod <jayconrod@google.com>
Run-TryBot: Jay Conrod <jayconrod@google.com>
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Reviewed-by: Bryan C. Mills <bcmills@google.com>
The old ioutil references are still valid, but update our code
to reflect best practices and get used to the new locations.
Code compiled with the bootstrap toolchain
(cmd/asm, cmd/dist, cmd/compile, debug/elf)
must remain Go 1.4-compatible and is excluded.
Also excluded vendored code.
For #41190.
Change-Id: I6d86f2bf7bc37a9d904b6cee3fe0c7af6d94d5b1
Reviewed-on: https://go-review.googlesource.com/c/go/+/263142
Trust: Russ Cox <rsc@golang.org>
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Emmanuel Odeke <emm.odeke@gmail.com>
As proposed and approved in #40025, Discard, NopCloser, and ReadAll
do not really fit into io/ioutil, which exists mainly to hold things that
would cause an import cycle if implemented in io itself, which is to say
things that import "os".
These three do not import "os" - they are generic io helpers like
many of the things in io itself, so it makes sense for them to be there.
Fixes#40025.
Change-Id: I77f47e9b2a72839edf7446997936631980047b67
Reviewed-on: https://go-review.googlesource.com/c/go/+/263141
Trust: Russ Cox <rsc@golang.org>
Run-TryBot: Russ Cox <rsc@golang.org>
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Reviewed-by: Rob Pike <r@golang.org>
Two different functions in the http API expect a FileSystem:
http.FileSystem and http.NewFileTransport.
Add a general converter http.FS to turn an fs.FS into an http.FileSystem
for use with either of these functions.
(The original plan was to add http.HandlerFS taking an fs.FS directly,
but that doesn't help with NewFileTransport.)
For #41190.
Change-Id: I5f242eafe9b963f4387419a2615bdb487c358f16
Reviewed-on: https://go-review.googlesource.com/c/go/+/243939
Trust: Russ Cox <rsc@golang.org>
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Rob Pike <r@golang.org>
Now templates can be parsed not just from operating system files
but from arbitrary file systems, including zip files.
For #41190.
Change-Id: I2172001388ddb1f13defa6c5e644e8ec8703ee80
Reviewed-on: https://go-review.googlesource.com/c/go/+/243938
Trust: Russ Cox <rsc@golang.org>
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Rob Pike <r@golang.org>
Now a zip.Reader (an open zip file) can be passed to code
that accepts a file system, such as (soon) template parsing.
For #41190.
Change-Id: If51b12e39db3ccc27f643c2453d3300a38035360
Reviewed-on: https://go-review.googlesource.com/c/go/+/243937
Trust: Russ Cox <rsc@golang.org>
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Rob Pike <r@golang.org>
