If x+delta cannot overflow/underflow, we can derive:
x+delta < x if delta<0 (this CL included)
x+delta > x if delta>0 (this CL not included due to
a recursive stack overflow)
Remove 95 bounds checks during ./make.bat
Fixes#51622
Change-Id: I60d9bd84c5d7e81bbf808508afd09be596644f09
Reviewed-on: https://go-review.googlesource.com/c/go/+/406175
Reviewed-by: David Chase <drchase@google.com>
Reviewed-by: Keith Randall <khr@golang.org>
Run-TryBot: Wayne Zuo <wdvxdr@golangcn.org>
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Reviewed-by: Heschi Kreinick <heschi@google.com>
Do not intercept integer compares that are used to increment libFuzzer's
8-bit counters. This is unnecessary and has a negative impact on the
fuzzing performance. This fixes#53760.
Change-Id: Id22efac968b18014eedabb6f0762e1456897024e
GitHub-Last-Rev: 52f69fd68c
GitHub-Pull-Request: golang/go#53786
Reviewed-on: https://go-review.googlesource.com/c/go/+/416796
Run-TryBot: Keith Randall <khr@golang.org>
Auto-Submit: Keith Randall <khr@golang.org>
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Reviewed-by: Matthew Dempsky <mdempsky@google.com>
Reviewed-by: Keith Randall <khr@golang.org>
Reviewed-by: Keith Randall <khr@google.com>
go:notinheap will be replaced by runtime/internal/sys.NotInHeap, and for
longer term, we want to restrict all of its usages inside the runtime
package only.
Updates #46731
Change-Id: I267adc2a19f0dc8a1ed29b5b4aeec1a7dc7318d5
Reviewed-on: https://go-review.googlesource.com/c/go/+/421880
Run-TryBot: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Reviewed-by: Keith Randall <khr@golang.org>
Reviewed-by: David Chase <drchase@google.com>
Reviewed-by: Keith Randall <khr@google.com>
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Looks like CL 413361 which added CaseClause.RTypes missed the need
to regenerate this file.
Also CL 413357 added DynamicTypeAssertExpr.SrcRType, same issue.
Change-Id: I45e4d0685cc2f9bdcef1fad2cfc92e7005ef363e
Reviewed-on: https://go-review.googlesource.com/c/go/+/426675
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: David Chase <drchase@google.com>
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Reviewed-by: Matthew Dempsky <mdempsky@google.com>
CL 327871 changes methodWrapper to always perform inlining after global
escape analysis. However, inlining the method may reveal closures, which
require walking all function bodies to decide whether to capture free
variables by value or by ref.
To fix it, just not doing inline if the method contains any closures.
Fixes#53702
Change-Id: I4b0255b86257cc6fe7e5fafbc545cc5cff9113e1
Reviewed-on: https://go-review.googlesource.com/c/go/+/426334
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
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Shape-based stenciling in unified IR is done by converting type argument
to its underlying type. So it agressively check that type argument is
not a TFORW. However, for recursive instantiated type argument, it may
still be a TFORW when shapifying happens. Thus the assertion failed,
causing the compiler crashing.
To fix it, just allow fully instantiated type when shapifying.
Fixes#54512Fixes#54722
Change-Id: I527e3fd696388c8a37454e738f0324f0c2ec16cb
Reviewed-on: https://go-review.googlesource.com/c/go/+/426335
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Reviewed-by: Heschi Kreinick <heschi@google.com>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
When a base+displacement kind of operand is given in an index-mode
instruction, the assembler does not flag it as an invalid instruction
causing the user to get an incorrect encoding of that instruction
leading to incorrect execution of the program.
Enable assembler to recognize valid and invalid operands used in index
mode instructions by classifying SOREG type into two further types
XOREG (used uniquely in index addressing mode instructions) and SOREG
for instructions working on base+displacement operands.
Also cleaned up usage of obj.Addr.Scale on PPC64.
Change-Id: Ib4d84343ae57477c6c074f44c4c2749496e11b91
Reviewed-on: https://go-review.googlesource.com/c/go/+/405542
Reviewed-by: Lynn Boger <laboger@linux.vnet.ibm.com>
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When spilling arg to stack or register, if it's a newly created value,
the arg position should be preserved. Otherwise, we may end up using
position information from deadcode lines.
This fixes the minimized test case in #54625 by mdempsky@, and make
building std successfully. However, the inline trees for these tests
still be corrupted:
- fixedbugs/issue53982.go
- typeparam/issue47775.go
- typeparam/issue47775b.go
- typeparam/issue49432.go
We probably still mess up the inline position somewhere else.
Updates #54625
Change-Id: I0d87e26b9ab451b85b6e79787da74a2b79a16209
Reviewed-on: https://go-review.googlesource.com/c/go/+/425785
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The current implementation always returns false for non-comparable
values, update the doc to reflect that.
Change-Id: I87f2da408874b0a209c8f51949e3310da15c5904
Reviewed-on: https://go-review.googlesource.com/c/go/+/426195
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: xie cui <523516579@qq.com>
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CL 426079 started checking errors from RecentTag.
Unfortunately, we forgot to run "-longtest" SlowBots, and it turns out
to have broken non-short tests for non-git VCS implementations,
because those don't implement the RecentTag method.
Updates #53935.
Change-Id: I5935f2f4b3f684515e99e8bf70a840154c36249f
Reviewed-on: https://go-review.googlesource.com/c/go/+/426495
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Avoid allocating large amounts of memory for corrupt input.
No test case because the problem can only happen for invalid data.
Let the fuzzer find cases like this.
Change-Id: I2d1745200611f0af06ca58adcc3e2309ad6742d8
Reviewed-on: https://go-review.googlesource.com/c/go/+/425882
Run-TryBot: Dan Kortschak <dan@kortschak.io>
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The existing documentation did not explain the difference between
placing a _test.go file in the same package as what is being
tested vs. adding it to a separate _test package. This explains the
distinction and adds an example.
Concept is explained well here: https://stackoverflow.com/a/31443271Fixes#25223
Change-Id: Iebaba15207d8aa24f0b370d8dd4062eadb504b5c
GitHub-Last-Rev: 7f49c5f462
GitHub-Pull-Request: golang/go#54160
Reviewed-on: https://go-review.googlesource.com/c/go/+/420415
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The existing implementation creates more branches with more states: -1, 0, 1,
which makes it not very intuitive to understand, let's use sync.Once and boolean
instead to make it more straightforward.
Change-Id: I05766e5fdf7dba37d6565f84d3db4373f9342fe5
Reviewed-on: https://go-review.googlesource.com/c/go/+/425880
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In initLocal for GOOS=js, use internal/itoa introduced in CL 301549
instead of a local implementation.
Change-Id: If107d5cf0ce56f4d926507db2cbd6da422c6d15a
Reviewed-on: https://go-review.googlesource.com/c/go/+/425302
Auto-Submit: Tobias Klauser <tobias.klauser@gmail.com>
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Change-Id: Iebe31b91c6e81438120f50a8089a8efca3d5339d
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Change-Id: Ice7e3762d4a1d71e23d619be699697f5c6523cc5
Reviewed-on: https://go-review.googlesource.com/c/go/+/425879
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The current implementation ignores the error when it tries to get
the recent tag on revisions, which results in incorrect pseudo
version (v0.0.0-) is derived.
Fixes#53935
Change-Id: I153d851eb913fb7e40051e194c92b9ca5bf0e906
GitHub-Last-Rev: 6ba1d90df5
GitHub-Pull-Request: golang/go#54701
Reviewed-on: https://go-review.googlesource.com/c/go/+/426079
Reviewed-by: Bryan Mills <bcmills@google.com>
Auto-Submit: Bryan Mills <bcmills@google.com>
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Time.appendFormatRFC3339 is a specialized implementation of
Time.appendFormat. We expect the two to be identical.
Add a fuzz test to ensure this property.
Updates #54093
Change-Id: I0bc41ee6e016d3dac75d1ac372d8c9c7266d0299
Reviewed-on: https://go-review.googlesource.com/c/go/+/425100
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FileServer provides a read-only service. Methods other than GET or HEAD should
be denied with an Allow header.
Fixes#53501
Change-Id: I1d31b405eefd90565ecd474ac3f8d8d6e3b15072
Reviewed-on: https://go-review.googlesource.com/c/go/+/413554
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Previously the first operand of FMOVD and FMOVS could be $0, which
would be converted to the ZR register. This is prohibited by CL 404316,
also it broken the encoding of "FMOVD/FMOVS ZR, Rn", this CL restores
this instruction format and fixes the encoding issue.
Fixes#54655.
Fixes#54729.
Change-Id: I9c42cd41296bed7ffd601609bd8ecaa27d11e659
Reviewed-on: https://go-review.googlesource.com/c/go/+/425188
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If array element is not interface, array or struct, we just need to
check whether the array element type is comparable.
Change-Id: I1ab94cfa17ae86feb6cd3fbdf878af5a776e7bec
Reviewed-on: https://go-review.googlesource.com/c/go/+/426194
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Prior to this commit, png.Decode would allow TrueColor PNG images that
have one but not both of PLTE and tRNS chunks.
Fixes#54142
Change-Id: I259c1fff86a0aa5640dbadf7ad834e05fbd1430c
Reviewed-on: https://go-review.googlesource.com/c/go/+/424916
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uint32(sz) != n*uint32(ddSz) can go wrong if
the RHS overflows, so do it in wider precision.
Fixes#54640.
Change-Id: I776563330e46de6cdacd4055f6ff08e7de67797f
Reviewed-on: https://go-review.googlesource.com/c/go/+/425364
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Correctly set this flag while parsing the syscall result.
The FlagUp flag can not distinguish the following situations:
1. interface is plugged, automatically up, and in running(UP) state
2. interface is not plugged, administratively or manually set to up,
but in DOWN state
So, We can't distinguish the state of a NIC by the FlagUp flag alone.
Fixes#53482
Change-Id: I43796bea1a7f72d1fddfef914efe603c81995e1b
GitHub-Last-Rev: 686b5d888e
GitHub-Pull-Request: golang/go#53484
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R_PPC64_SECTOFF_LO_DS is defined as reloc 62 on all PPC64 ELF ABIs.
Fixes#53356
Change-Id: I5fabf6be32f3310c5aed47d4d654e05fb7bc9de0
Reviewed-on: https://go-review.googlesource.com/c/go/+/411915
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For #46746
Change-Id: I879124974cdb55932cd9d07d3b384d49d5059857
Reviewed-on: https://go-review.googlesource.com/c/go/+/423794
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A recent change was made for ppc64x to treat ANDCCconst as
a tuple, allowing ANDconst to be removed from the list
of ops. Included in that change were some improvements to the
rules to avoid some extra code, mainly the elimination of a
cmp 0 following an andi. and in some cases the following
isel. While those changes worked for most cases, in a few
cases some extra unnecessary code was generated.
Currently the snippet appears in archive/zip.(*FileHeader).Mode:
ANDCC R4,$1,R5 // andi. r5,r4,1
ANDCC R4,$16,R5 // andi. r5,r4,16
CMPW R5,R0 // cmpw r5,r0
ADDIS $0,$-32768,R5 // lis r5,-32768
OR R5,$511,R5 // ori r5,r5,511
MOVD $438,R6 // li r6,438
ISEL $2,R6,R5,R5 // isel r5,r6,r5,eq
MOVD $-147,R6 // li r6,-147
AND R6,R5,R6 // and r6,r5,r6
ANDCC R4,$1,R4 // andi. r4,r4,1
ISEL $2,R5,R6,R4 // isel r4,r5,r6,eq
The first ANDCC is never used and should not be there.
From the ssa.html file, the scheduler is not putting the Select1
close to the ISEL, which results in the flag being clobbered
before it can be used. By changing the score for a Select0 or Select1
with type Flags, the extra ANDCC does not occur.
Change-Id: I82f4bc7c02afb1c2b1c048dc6995e0b3f9363fb3
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This removes one of the branches in the atomicCas sequences for
ppc64/ppc64le.
Change-Id: Ibb46fbfdce052889c69e3da298f28caff540d99b
Reviewed-on: https://go-review.googlesource.com/c/go/+/422014
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Both FileServer and NewFileTransport can try to seek a file, specifically
when MIME type sniffing is performed. This can be somewhat surprising to an
implementer of an fs.FS, as their filesystem will appear to work until a
user tries to access a file with an unrecognized extension (which requires
type sniffing and therefore seeking). With FileServer, this results in a
"seeker can't seek" message, which is not very clear for the developer.
The issue arises because fs.FS does not require Seek, while http.FileSystem
does. Therefore, this change adds a line to the documentation of net/http's
adapter function mentioning the requirement.
Change-Id: Ieb955b7a7f34e2be39dd696cb712513c70100b3a
GitHub-Last-Rev: fddccdae36
GitHub-Pull-Request: golang/go#48781
Reviewed-on: https://go-review.googlesource.com/c/go/+/353874
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To make it easier to extract the HTTP/2 error code (if any) from
net/http errors, implement an As method on the vendored copy of
golang.org/x/net/http2.StreamError. The new As method lets users work
with the vendored error type as though it were the x/net/http2
StreamError.
Fixes#53896.
Change-Id: Ib18eb428adc05a3c0e19a946ece936e2378e1c7c
Reviewed-on: https://go-review.googlesource.com/c/go/+/425104
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