As required by the spec.
This is a variant of what I reverted in f47e722403.
It will probably still cause a regression but now it's easier to migrate (parts of)
the current implementation to C++, which is expected to make things faster again.
BUG=chromium:627729,v8:5113
Review-Url: https://codereview.chromium.org/2164923002
Cr-Commit-Position: refs/heads/master@{#37897}
This reverts commit 457c02573c because it caused a
regression in SunSpider/string-fasta and possibly AreWeFastYet/Life. Need to
implement this in a smarter way.
TBR=littledan@chromium.org
BUG=chromium:627729,v8:5113
Review-Url: https://codereview.chromium.org/2149303003
Cr-Commit-Position: refs/heads/master@{#37793}
Reason for revert:
Correcting issue.
Original issue's description:
> Revert of Add errors for declarations which conflict with catch parameters. (patchset #6 id:100001 of https://codereview.chromium.org/2109733003/ )
>
> Reason for revert:
> Fuzzer claims `try { \"\" ; } catch(x) { let x1 = [1,,], x = x; }` causes a crash.
>
> Original issue's description:
> > Add errors for declarations which conflict with catch parameters.
> >
> > Catch parameters are largely treated as lexical declarations in the
> > block which contains their body for the purposes of early syntax errors,
> > with some exceptions outlined in B.3.5. This patch introduces most of
> > those errors, except those from `eval('for (var e of ...);')` inside of
> > a catch with a simple parameter named 'e'.
> >
> > Note that annex B.3.5 allows var declarations to conflict with simple
> > catch parameters, except when the variable declaration is the init of a
> > for-of statement.
> >
> > BUG=v8:5112,v8:4231
> >
> > Committed: https://crrev.com/2907c726b2bb5cf20b2bec639ca9e6a521585406
> > Cr-Commit-Position: refs/heads/master@{#37462}
>
> TBR=littledan@chromium.org
> # Skipping CQ checks because original CL landed less than 1 days ago.
> NOPRESUBMIT=true
> NOTREECHECKS=true
> NOTRY=true
> BUG=v8:5112,v8:4231
>
> Committed: https://crrev.com/8834d5ecb559001c87c42322969471da60574a8c
> Cr-Commit-Position: refs/heads/master@{#37464}
R=littledan@chromium.org
BUG=v8:5112,v8:4231
Review-Url: https://codereview.chromium.org/2119933002
Cr-Commit-Position: refs/heads/master@{#37728}
Reason for revert:
Fuzzer claims `try { \"\" ; } catch(x) { let x1 = [1,,], x = x; }` causes a crash.
Original issue's description:
> Add errors for declarations which conflict with catch parameters.
>
> Catch parameters are largely treated as lexical declarations in the
> block which contains their body for the purposes of early syntax errors,
> with some exceptions outlined in B.3.5. This patch introduces most of
> those errors, except those from `eval('for (var e of ...);')` inside of
> a catch with a simple parameter named 'e'.
>
> Note that annex B.3.5 allows var declarations to conflict with simple
> catch parameters, except when the variable declaration is the init of a
> for-of statement.
>
> BUG=v8:5112,v8:4231
>
> Committed: https://crrev.com/2907c726b2bb5cf20b2bec639ca9e6a521585406
> Cr-Commit-Position: refs/heads/master@{#37462}
TBR=littledan@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=v8:5112,v8:4231
Review-Url: https://codereview.chromium.org/2112223002
Cr-Commit-Position: refs/heads/master@{#37464}
Catch parameters are largely treated as lexical declarations in the
block which contains their body for the purposes of early syntax errors,
with some exceptions outlined in B.3.5. This patch introduces most of
those errors, except those from `eval('for (var e of ...);')` inside of
a catch with a simple parameter named 'e'.
Note that annex B.3.5 allows var declarations to conflict with simple
catch parameters, except when the variable declaration is the init of a
for-of statement.
BUG=v8:5112,v8:4231
Review-Url: https://codereview.chromium.org/2109733003
Cr-Commit-Position: refs/heads/master@{#37462}
AddBoundMethod, in i18n.js, returns functions all of which share the
same backing SharedFunctionInfo, which means that its calls to
InstallGetter were causing all such functions to have a single name
(that of the last caller, "get breakType").
This patch skips calling InstallGetter and instead directly calls
%DefineGetterPropertyUnchecked, which itself sets the name property
on the JSFunction instance (it knows how to do this in order to handle
getters that have computed property names).
Also takes care of a TODO having to do with the inner boundMethod:
its name is now made empty, by using a new macro that gets around
ES2015's function name inference.
Finally, removes a redundant %FunctionRemovePrototype: arrow functions
have no prototypes to begin with.
R=littledan@chromium.org
BUG=v8:4778
Review-Url: https://codereview.chromium.org/2109223002
Cr-Commit-Position: refs/heads/master@{#37459}
Reason for revert:
Found to break SAP Web IDE, and these semantics are not shipped in any other browser.
Revert to legacy semantics while assessing web compatibility.
BUG=chromium:624318
Original issue's description:
> Put RegExp js code in strict mode
>
> src/js/regexp.js was one of the few files that was left in sloppy
> mode. The ES2017 draft specification requires that writes to
> lastIndex throw when the property is non-writable, and test262
> tests enforce this behavior. This patch puts that file in strict
> mode.
>
> BUG=v8:4504
> R=yangguo@chromium.org
> LOG=Y
>
> Committed: https://crrev.com/80b1b2a45bbd9bf3d08e4e6516acfaaa8f438213
> Cr-Commit-Position: refs/heads/master@{#34801}
TBR=yangguo@chromium.org,adamk@chromium.org
Review-Url: https://codereview.chromium.org/2112713003
Cr-Commit-Position: refs/heads/master@{#37449}
Reason for revert:
Speculative revert to unblock roll: https://codereview.chromium.org/2107223003/
Original issue's description:
> Amend DataView, ArrayBuffer, and TypedArray methods to use ToIndex.
>
> The spec was modified to relax some requirements which implementors had not been
> enforcing. Part of this process involved introducing a new abstract operation
> ToIndex, which had partial overlap with our existing semantics as well as some
> differences (most notably treating undefined as 0). Test262 tests were introduced to
> check for the new semantics, some of which we were failing. This patch amends the
> parts of our implementation corresponding to specification algorithms which use
> ToIndex to follow its semantics precisely.
>
> BUG=v8:4784,v8:5120
>
> Committed: https://crrev.com/09720349ea058d178521ec58d0a5676443a5a132
> Cr-Commit-Position: refs/heads/master@{#37406}
TBR=littledan@chromium.org,adamk@chromium.org,bakkot@google.com
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=v8:4784,v8:5120
Review-Url: https://codereview.chromium.org/2113593002
Cr-Commit-Position: refs/heads/master@{#37417}
Previously, any expressions inside destructuring patterns in a catch
would be parsed in the surrounding scope, instead of in the catch's
scope. This change fixes that by entering not only the catch scope,
but also the block scope inside it.
R=neis@chromium.org
BUG=v8:5106, v8:5112
Review-Url: https://codereview.chromium.org/2110193002
Cr-Commit-Position: refs/heads/master@{#37415}
types of primitives, not just undefined, booleans, numbers, and strings.
(The missing cases were null and Symbol.) This is required by the
specification, and there are test262 tests which we were failing due to
this bug.
BUG=v8:5124
Committed: https://crrev.com/f788bd9cce19815cba746e47bb65abfe25c16208
Review-Url: https://codereview.chromium.org/2096873002
Cr-Original-Commit-Position: refs/heads/master@{#37234}
Cr-Commit-Position: refs/heads/master@{#37407}
The spec was modified to relax some requirements which implementors had not been
enforcing. Part of this process involved introducing a new abstract operation
ToIndex, which had partial overlap with our existing semantics as well as some
differences (most notably treating undefined as 0). Test262 tests were introduced to
check for the new semantics, some of which we were failing. This patch amends the
parts of our implementation corresponding to specification algorithms which use
ToIndex to follow its semantics precisely.
BUG=v8:4784,v8:5120
Review-Url: https://codereview.chromium.org/2090353003
Cr-Commit-Position: refs/heads/master@{#37406}
In ES2016, function declarations nested in blocks are formally allowed. This was
never a part of ECMAScript, but was a common extension. Unfortunately
implementations differed in the exact semantics. Annex B.3.3 in the spec tries
to standardize the parts which are common to different implementations, but does
so with some fairly complicated semantics.
This CL addresses three issues related to annex B.3.3:
* When the outer function had a complex parameter list, no hoisting whatsoever was
being performed.
* Hoisting was not blocked by parameters of the same name.
* Hoisting was not blocked by nested lexical declarations of the same name.
We had tests which checked for the second, but they were incorrectly passing due to
the first. This CL adds more complete tests.
BUG=v8:5151, v8:5111
Review-Url: https://codereview.chromium.org/2099623003
Cr-Commit-Position: refs/heads/master@{#37405}
The start argument must be converted to an integer before the length argument is
converted. (Consequently, the start argument is converted even when the length
is 0.) This matters because conversion is observable.
Also rewrite the function in a way that closely resembles the spec text.
R=littledan@chromium.org
BUG=v8:5140
Review-Url: https://codereview.chromium.org/2109583002
Cr-Commit-Position: refs/heads/master@{#37378}
The lastIndex property must be written with the semantics of a strict [[Set]],
so an exception must be thrown when the attributes don't allow writing. We used
to ignore the attributes.
R=littledan@chromium.org, yangguo@chromium.org
BUG=v8:5138
Review-Url: https://codereview.chromium.org/2109593002
Cr-Commit-Position: refs/heads/master@{#37369}
Reason for revert:
[Sheriff] Breaks layout tests. Please rebase upstream if intended:
https://build.chromium.org/p/client.v8.fyi/builders/V8-Blink%20Linux%2064/builds/7691
Original issue's description:
> Amends the TypedArray constructor to use the path for primitives for all
> types of primitives, not just undefined, booleans, numbers, and strings.
> (The missing cases were null and Symbol.) This is required by the
> specification, and there are test262 tests which we were failing due to
> this bug.
>
> BUG=v8:5124
>
> Committed: https://crrev.com/f788bd9cce19815cba746e47bb65abfe25c16208
> Cr-Commit-Position: refs/heads/master@{#37234}
TBR=littledan@chromium.org,bakkot@google.com
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=v8:5124
Review-Url: https://codereview.chromium.org/2091693004
Cr-Commit-Position: refs/heads/master@{#37236}
types of primitives, not just undefined, booleans, numbers, and strings.
(The missing cases were null and Symbol.) This is required by the
specification, and there are test262 tests which we were failing due to
this bug.
BUG=v8:5124
Review-Url: https://codereview.chromium.org/2096873002
Cr-Commit-Position: refs/heads/master@{#37234}
TypedArrays store their true length in an internal slot. This is
normally reflected in the .length property, but that property is
configurable. Algorithms which need the length of a typed array are to
use the internal slot, not the property; TypedArray.prototype.set was
not doing this.
BUG=v8:5133
Review-Url: https://codereview.chromium.org/2091153002
Cr-Commit-Position: refs/heads/master@{#37232}
Reason for revert:
Reland fixing msan and tsan
Original issue's description:
> Revert of Test262 roll (patchset #15 id:280001 of https://codereview.chromium.org/2068263002/ )
>
> Reason for revert:
> Broke msan and tsan; need to add an extra skip
>
> Original issue's description:
> > Test262 roll
> >
> > This roll does not include a test harness change; infrastructure issues
> > still need to be worked out.
> >
> > Committed: https://crrev.com/d3a95b8a78eefabf884a60bc3d6aac5830b44eb3
> > Cr-Commit-Position: refs/heads/master@{#37225}
>
> TBR=adamk@chromium.org
> # Skipping CQ checks because original CL landed less than 1 days ago.
> NOPRESUBMIT=true
> NOTREECHECKS=true
> NOTRY=true
>
> Committed: https://crrev.com/8ea2cbea2e65dc506d50a25a81e610f37bc751ec
> Cr-Commit-Position: refs/heads/master@{#37226}
TBR=adamk@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
Review-Url: https://codereview.chromium.org/2097573003
Cr-Commit-Position: refs/heads/master@{#37227}
Reason for revert:
Broke msan and tsan; need to add an extra skip
Original issue's description:
> Test262 roll
>
> This roll does not include a test harness change; infrastructure issues
> still need to be worked out.
>
> Committed: https://crrev.com/d3a95b8a78eefabf884a60bc3d6aac5830b44eb3
> Cr-Commit-Position: refs/heads/master@{#37225}
TBR=adamk@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
Review-Url: https://codereview.chromium.org/2094613004
Cr-Commit-Position: refs/heads/master@{#37226}
This roll does not include a test harness change; infrastructure issues
still need to be worked out.
Review-Url: https://codereview.chromium.org/2068263002
Cr-Commit-Position: refs/heads/master@{#37225}
Reland of https://codereview.chromium.org/2048703002/
Code like `let a; eval("var a;");` should throw a SyntaxError, not a TypeError
(this caused a test262 failure.). However, the code `eval("function NaN() {}");`
should actually throw a TypeError. This patch changes most cases of
redeclaration errors from TypeError to SyntaxError. See the test
mjsunit/regress/redeclaration-error-types for a thorough analysis with spec
references.
The relevant sections of the spec are ES#sec-globaldeclarationinstantiation and
ES#sec-evaldeclarationinstantiation
BUG=v8:4955
LOG=y
CQ_INCLUDE_TRYBOTS=tryserver.blink:linux_blink_rel
R=adamk
Review-Url: https://codereview.chromium.org/2086063002
Cr-Commit-Position: refs/heads/master@{#37156}
It still seems to break things in the wild, see attached Chromium
bug for details.
BUG=v8:4247, chromium:615873
Review-Url: https://codereview.chromium.org/2076763003
Cr-Commit-Position: refs/heads/master@{#37064}
Reason for revert:
This is going to break the LayoutTest inspector-protocol/console/console-let-const-with-api.html as seen in https://build.chromium.org/p/tryserver.v8/builders/v8_linux_blink_rel/builds/2247 . Please run this test manually, using instructions at https://www.chromium.org/developers/testing/webkit-layout-tests , and fix on the Chrome side if needed before resubmitting this patch.
Original issue's description:
> change most cases of variable redeclaration from TypeError to SyntaxError.
>
> Code like `let a; eval("var a;");` should throw a SyntaxError, not a TypeError
> (this caused a test262 failure.). However, the code `eval("function NaN() {}");`
> should actually throw a TypeError. This patch changes most cases of
> redeclaration errors from TypeError to SyntaxError. See the test
> mjsunit/regress/redeclaration-error-types for a thorough analysis with spec
> references.
>
> The relevant sections of the spec are ES#sec-globaldeclarationinstantiation and
> ES#sec-evaldeclarationinstantiation
>
> BUG=v8:4955
> LOG=y
>
> Committed: https://crrev.com/2b787561763d0f7e8dab698652715a742cf78291
> Cr-Commit-Position: refs/heads/master@{#36940}
TBR=adamk@chromium.org,jwolfe@igalia.com
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=v8:4955
Review-Url: https://codereview.chromium.org/2064793002
Cr-Commit-Position: refs/heads/master@{#36941}
Code like `let a; eval("var a;");` should throw a SyntaxError, not a TypeError
(this caused a test262 failure.). However, the code `eval("function NaN() {}");`
should actually throw a TypeError. This patch changes most cases of
redeclaration errors from TypeError to SyntaxError. See the test
mjsunit/regress/redeclaration-error-types for a thorough analysis with spec
references.
The relevant sections of the spec are ES#sec-globaldeclarationinstantiation and
ES#sec-evaldeclarationinstantiation
BUG=v8:4955
LOG=y
Review-Url: https://codereview.chromium.org/2048703002
Cr-Commit-Position: refs/heads/master@{#36940}
This patch declares a new rest parameter for the derived constructor,
and passes it to base constructor after calling PrepareSpreadArguments.
This patch also updates the test262.status to account for
the now passing test.
BUG=v8:4890
Review-Url: https://codereview.chromium.org/2056993004
Cr-Commit-Position: refs/heads/master@{#36939}
This calls the action that archives test262 in gn. In gn
we can't specify an action output outside the product
directory. This works around it with an extra action
stamp file in the product directory, while the archive
remains in the test directory.
We don't want to generate the archive in the product
directory, as some legacy archiving scripts might include
it and it's too large. It should only be included in the
swarming tasks that are going to use it for testing.
BUG=chromium:474921
Review-Url: https://codereview.chromium.org/2034713005
Cr-Commit-Position: refs/heads/master@{#36731}
The busted logic caused us to go down the SCRIPT path internally,
causing us to fail the test262 tests that attempt to induce parse
errors at the top level.
R=littledan@chromium.org
BUG=v8:4985
Review-Url: https://codereview.chromium.org/2008743002
Cr-Commit-Position: refs/heads/master@{#36563}
Removes the DONT_DELETE enum bit from the properties to make them
configurable.
Also, updates the regress-typedarray-length test to --
- Check for true boolean return value on deletion of these
properties.
- Check for undefined return value on trying to access these
properties after deletion.
BUG=v8:4902
LOG=Y
Review-Url: https://codereview.chromium.org/2001393004
Cr-Commit-Position: refs/heads/master@{#36528}
Bootstrapper previously created %ThrowTypeError% before the strict
function maps existed, so making that function strict required a small
amount of code reordering.
This fixes a few test262 tests, but we're still non-compliant due to the
fact that we have two functions instead of one (see issue 4034).
BUG=v8:4925
LOG=y
Review-Url: https://codereview.chromium.org/2006733004
Cr-Commit-Position: refs/heads/master@{#36526}
Move it to HARMONY_STAGED from HARMONY_INPROGRESS.
Update test262.status now that case mapping tests are passing with
'--harmony' specified.
BUG=v8:4476,v8:4477
LOG=Y
TEST=test262/{built-ins,intl402}/Strings/*, webkit/fast/js/*,
mjsunit/string-case, intl/general/case*
CQ_INCLUDE_TRYBOTS=tryserver.v8:v8_linux_noi18n_rel_ng
Review-Url: https://codereview.chromium.org/1990083002
Cr-Commit-Position: refs/heads/master@{#36379}
When I18N is enabled, use ICU's case conversion API and transliteration
API [1] to implement String.prototype.to{Upper,Lower}Case and
String.prototype.toLocale{Upper,Lower}Case.
* ICU-based case conversion was implemented in runtime-i18n.cc/i18n.js
* The above 4 functions are overridden with those in i18n.js when
--icu_case_mapping flag is turned on. To control the override by the flag,
they're overriden in icu-case-mapping.js
Previously, toLocale{U,L}Case just called to{U,L}Case so that they didn't
support locale-sensitive case conversion for Turkic languages (az, tr),
Greek (el) and Lithuanian (lt).
Before ICU APIs for the most general case are called, a fast-path for Latin-1
is tried. It's taken from Blink and adopted as necessary. This fast path
is always tried for to{U,L}Case. For toLocale{U,L}Case, it's only taken
when a locale (explicitly specified or default) is not in {az, el, lt, tr}.
With these changes, a build with --icu_case_mapping=true passes a bunch
of tests in test262/intl402/Strings/* and intl/* that failed before.
Handling of pure ASCII strings (aligned at word boundary) are not as fast
as Unibrow's implementation that uses word-by-word case conversion. OTOH,
Latin-1 input handling is faster than Unibrow. General Unicode input
handling is slower but more accurate.
See https://docs.google.com/spreadsheets/d/1KJCJxKc1FxFXjwmYqABS0_2cNdPetvnd8gY8_HGSbrg/edit?usp=sharing for the benchmark.
This CL started with http://crrev.com/1544023002#ps200001 by littledan@,
but has changed significantly since.
[1] See why transliteration API is needed for uppercasing in Greek.
http://bugs.icu-project.org/trac/ticket/10582
R=yangguo
BUG=v8:4476,v8:4477
LOG=Y
TEST=test262/{built-ins,intl402}/Strings/*, webkit/fast/js/*, mjsunit/string-case,
intl/general/case*
Review-Url: https://codereview.chromium.org/1812673005
Cr-Commit-Position: refs/heads/master@{#36187}
The ECMA 402 implementation previously pushed directly to real
Arrays, which risks having observably incorrect behavior in the
presence of monkey patching. This patch uses InternalArrays instead
to avoid that hazard.
R=jshin@chromium.org,yangguo@chromium.org
BUG=chromium:604299
LOG=N
Review-Url: https://codereview.chromium.org/1923803002
Cr-Commit-Position: refs/heads/master@{#35949}
Our implementation of the spec got one comparison wrong, at
step 19.d.iii (we were comparing against 'q' instead of 'p').
R=littledan@chromium.org
BUG=chromium:607566
LOG=n
Review-Url: https://codereview.chromium.org/1940643002
Cr-Commit-Position: refs/heads/master@{#35947}
This prepares for pulling chromium's build as dependency for
gn. After this, the files in build and gypfiles need to stay
in sync until chromium is updated.
BUG=chromium:474921
LOG=n
Review-Url: https://codereview.chromium.org/1848553003
Cr-Commit-Position: refs/heads/master@{#35898}
New incoming test262 tests check what happens on detached ("neutered")
ArrayBuffers. This patch makes the test262 infrastructure define
detaching an ArrayBuffer in terms of %ArrayBufferNeuter, passing the
--allow-natives-syntax flag, when it is needed.
BUG=v8:4193
LOG=N
R=adamk,machenbach
Review URL: https://codereview.chromium.org/1897203003
Cr-Commit-Position: refs/heads/master@{#35676}
This causes an incoming test262 test to pass, as part of the next
test262 roll.
R=adamk,machenbach
BUG=v8:1569
LOG=N
Review URL: https://codereview.chromium.org/1896293003
Cr-Commit-Position: refs/heads/master@{#35667}
- RegExp.prototype.toString() doesn't have any special handling of
RegExp instances and simply calls the source and flags getters
- Use the original values of global and sticky, rather than based
on the current flag getters, as specified in
https://github.com/tc39/ecma262/pull/494R=yangguo@chromium.org,adamk
LOG=Y
BUG=v8:4602
Review URL: https://codereview.chromium.org/1846303002
Cr-Commit-Position: refs/heads/master@{#35225}
Reason for revert:
TC39 decided that this compatibility fix should be standardized.
Original issue's description:
> Remove RegExp.prototype.source getter compat workaround
>
> The getter RegExp.prototype.source is specified in ES2015 to throw when
> called on a non-RegExp instance, such as RegExp.prototype. We had previously
> put in a compatibility workaround for all RegExp getters to make them
> throw on access specifically with RegExp.prototype as the receiver; however,
> we only have evidence that this is needed for properties other than source.
> This patch removes the compatibility workaround for get RegExp.prototype.source
> and gives it semantics precisely as per the ES2015 specification.
>
> R=adamk
> BUG=chromium:581577,v8:4827
> LOG=Y
>
> Committed: https://crrev.com/80803aa89e31839b8f73959776fa7e1923c6b461
> Cr-Commit-Position: refs/heads/master@{#35086}
R=adamk@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=chromium:581577,v8:4827
LOG=Y
Review URL: https://codereview.chromium.org/1847783003
Cr-Commit-Position: refs/heads/master@{#35180}
This patch adds fast paths for @@replace and @@split that call into
the old, side-effect free (and faster) versions of those builtin
operations when possible (roughly, when the receiver is a RegExp
and the 'exec' method is untampered). Also add some micro-optimizations
that further improve performance.
Taken altogether, this takes us from a ~70% regression on the Octane
RegExp benchmark to a ~9% regression.
The test262.status lines for RegExps has been reorganized to make it
clearer the status of individual tests. More work will likely be
required to increase spec compliance before the --harmony-regexp-exec
flag is shipped; some of that work is happening on the spec side.
BUG=v8:4602
LOG=y
Review URL: https://codereview.chromium.org/1836123002
Cr-Commit-Position: refs/heads/master@{#35118}
