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ChangeLog
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ChangeLog
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2011-09-08: Version 3.6.2
Added "dependencies" target to top-level Makefile.
Added ability to turn profiler on/off in d8.
Added "soname_version" parameter to common.gypi, v8.gyp, and Makefile.
Fixed several crash bugs.
2011-09-07: Version 3.6.1
Fixed a bug in abrupt exit from with or catch inside finally.
Fixed possible crash in FixedDoubleArray::Initialize() (Chromium
issue 95113).
Fixed a bug in Page::GetRegionMaskForSpan (Chromium issue 94425).
Fixed a few clang warnings (which -Werror treated as errors).
Performance improvements on all platforms.
2011-09-05: Version 3.6.0
Fixed a bug when optimizing named function expression (issue 1647).
Fixed a bug when optimizing f.call.apply (issue 1650).
Made arguments and caller always be null on native functions
(issues 1548 and 1643).
Fixed issue 1648 (cross-compiling x64 targeting ia32).
Fixed issue 371 (d8 printing of strings containing \0).
Fixed order of evaluation in arguments to parseInt (issue 1649).
Fixed a problem with large heap snapshots in Chrome DevTools
(issue 1658, chromium issue 89268).
Upped default maximum heap size from 512M to 700M.
2011-08-31: Version 3.5.10
Added dependency of v8_base on WinSocket2 Windows library in
the GYP-build.
Various bugfixes.
2011-08-29: Version 3.5.9
Made FromPropertyDescriptor not trigger inherited setters.
Fixed .gyp files to work on the ARM simulator.
Fixed shared library build warnings for MSVS.
2011-08-24: Version 3.5.8
Added V8EXPORT attributes for v8::Array::CheckCast and
v8::Number::CheckCast.
Made a slight API change enabling opting out from null termination
in String::Write*().
Fixed arm build for gcc-4.6.
2011-08-22: Version 3.5.7
Make scanner handle invalid unicode escapes in identifiers correctly.
Make regexp flag parsing stricter.
Fix several memory leaks.
2011-08-17: Version 3.5.6
Fixed issue that could cause crashes when running with --heap-stats.
Fixed compilation on Linux 2.6.9 and older.
Fixed live-object-list to work with isolates.
Fixed memory leaks in zones and isolates.
Fixed a performance regression for TypedArrays on x64.
Stability improvements on all platforms.
2011-08-15: Version 3.5.5
Fixed bugs involving negative zero and the optimizing compiler.
Fixed optimized version of Function.apply(x, arguments). (issue 1592)
Eliminated uses of deprecated ARM instructions.
Sped up Math.floor by using SSE 4.1 roundsd instruction on ia32.
Removed restriction on the size of disassembled code that is printed.
2011-08-10: Version 3.5.4
Added a preliminary implementation of ES Harmony weak maps. Weak
maps can be enabled by the flag --harmony-weakmaps.
Introduced a toplevel Makefile to support GYP-based building. GYP
can be obtained from http://gyp.googlecode.com.
Fixed a bug in the length property of functions created by
Function.prototype.bind.
Reduced malloc heap allocation on process startup.
Several important code generation bug fixes.
Performance improvements on all platforms.
2011-08-03: Version 3.5.3
MIPS: Port of fix to ClassOf check from ARM.
Patch from Paul Lind <plind44@gmail.com>.
Stopped using mprotect on Cygwin.
Avoided uninitialized member warning on gcc 4.3.4
Both patches by Bert Belder.
Bug fixes and performance improvements on all platforms.
2011-08-01: Version 3.5.2
Performance improvements on all platforms.
2011-07-28: Version 3.5.1
Fixed setting the readonly flag on the prototype property using the
API call FunctionTemplate::SetPrototypeAttributes (issue 1539).
Changed the tools/test.py script to use d8 instead of shell for
testing.
Fixed crash in ToBooleanStub when GC happens during invocation.
Enabled automatic unboxing of double arrays.
Performance improvements on all platforms.
2011-07-25: Version 3.5.0
Implemented Object.prototype.{hasOwnProperty, propertyIsEnumerable} for
proxies.
Removed logging to memory support.
Bugfixes and performance work.
2011-07-20: Version 3.4.14
Fix the debugger for strict-mode functions. (Chromium issue 89236)
Add GetPropertyAttribute method for Object in the API. (Patch by
Peter Varga)
Fix -Wunused-but-set-variable for gcc-4.6 on x64. (Issue 1291)
2011-07-18: Version 3.4.13
Improved debugger support to allow inspection of optimized frames (issue
1140).
Fixed a bug in prototype transitions cache clearing introduced by r8165.
Fixed shortcutting bug in HInferRepresentation. Patch by Andy Wingo.
Fixed a memory leak in sample/shell.cc (dispose semaphores).
Simplified HClampToUint8. Patch by Andy Wingo.
Exposed APIs for detecting boxed primitives, native errors. Patch by
Luke Zarko.
Added map check for COW elements to crankshaft array handling code
(issue 1560).
Sample shell and (a light version of) D8 links against a shared library
now.
Fixed bug in array filter and reduce functions (issue 1559).
Avoid TLS load in AstNode constructor.
Introduced a random entropy source which can optionally be provided at
initialization. (Chromium issue 89462).
2011-07-13: Version 3.4.12
Added --prof profiling option to d8 shell.
Fixed a bug where reading a directory in d8 shell hangs (issue 1533).
Fixed a potential assertion failure in const declarations.
Fixed an assertion failure in descriptor arrays (issue 1526).
Enabled fast thread-local storage by default on supported platforms.
Improved reporting of source position for global variable loads
(issue 1527).
2011-07-11: Version 3.4.11
Fixed MinGW32 build.
Fixed a GC bug with RegExp code flushing.
Implemented Object.defineProperty for proxies.
Fixed a bug in for/in iteration of arguments objects (issue 1531).
Added debugger support for inspecting optimized frames (issue 1140).
Allowed JSObject::PreventExtensions to work for arguments objects.
Bugfixes and performance work.
2011-07-06: Version 3.4.10
Fixed debugger not breaking on certain "if" statements (issue 1523).
Fixed assertion failure in runtime profiler when running on IA32
without snapshot (issue 1522).
Fixed ABI for API calls on IA32 (for clang compatibility).
Introduced code flushing of RegExp code to free memory used by
RegExps sooner.
Fixed linux-tick-processor built wrong version of v8 (issue 1532).
Fixed assertion failure in v8::TryCache::StackTrace (issue 1529).
Performance improvements on all platforms.
2011-07-04: Version 3.4.9
Added support for debugger inspection of locals in optimized frames
(issue 1140).
Fixed SConstruct to pass correct defines to samples/preparser when
building with library=shared.
Made date parser handle ES5 Date Time Strings correctly (issue 1498).
Fixed a bug in Object.defineProperty on the arguments object.
Performance improvements on all platforms.
2011-06-29: Version 3.4.8
Ensure 16-byte stack alignment on Solaris (issue 1505).
Fix "illegal access" when calling parseInt with a radix
that is not a smi. (issue 1246).
2011-06-27: Version 3.4.7
Fixed 64-bit build on FreeBSD.
Added API to set the property attributes for the prototype
property on functions created from FunctionTemplates.
Bugfixes and performance work.
2011-06-22: Version 3.4.6
Lowered limit on code space for systems with low memory supply.
Allowed compiling v8_shell with the 'host' toolset (issue 82437).
Extended setBreakpoint API to accept partial script name (issue 1418).
Made multi-line comments not count when deciding whether the '-->'
comment starter is first on a line. This matches Safari.
Made handling of non-array recievers in Array length setter correct
(issue 1491).
Added ability to heap profiler to iterate over snapshot's node
(issue 1481).
2011-06-20: Version 3.4.5
Fixed issues 794, 1097, 1215(partial), 1417, 1435, 1472, 1473,
1476, and 1477.
Improved code generation for !0 and !1.
Reduced memory usage for regular expressions with nested qualifiers.
(issue 1472)
Fixed V8 to count line terminators in multi-line comments.
(Chromium issue 86431)
Fixed disassembler=on option for release-mode builds. (issue 1473)
Performance improvements on all platforms.
2011-06-15: Version 3.4.4
Added snapshot compression support and --stress-opt flag to d8.
Improved performance of try/catch.
Several GYP-related changes: Added support for building Xcode project
files. Make the ARM simulator build with GYP again. Generate Makefiles
for all architectures on Linux.
Fixed Array.prototype.{reduce,reduceRight} to pass undefined as the
receiver for strict mode callbacks. (issue 1436)
Fixed a bug where an array load was incorrectly hoisted by GVN.
Handle 'undefined' correctly when === has been specialized for doubles.
(issue 1434)
Corrected the limit of local variables in an optimized function from 64
to 63.
Correctly set ReadOnly flag on indexed properties when using the API Set
method. (issue 1470)
Give the correct error message when Object.isExtensible is called on a
non-object. (issue 1452)
Added GetOwnPropertyNames method for Object in the API. Patch by Peter
Varga.
Do not redefine properties unneccesarily in seal and freeze. (issue
1447)
IsExecutionTerminating has an Isolate parameter now.
Distinguish keyed loads with a symbol key from fast elements loads,
avoiding some useless deoptimizations. (issue 1471)
2011-06-08: Version 3.4.3
Clear the global thread table when an isolate is disposed
(issue 1433).
Converted time zone name to UTF8 on Windows (issue 1290).
Limited the number of arguments in a function call to 32766
(issue 1413).
Compress sources of JS libraries in addition to the snapshot.
Fixed a bug in Lithium environment iteration.
Performance improvements on all platforms.
2011-06-06: Version 3.4.2
More work on ES-Harmony proxies. Still hidden behind a flag.
Fixed some crash bugs and improved performance.
Fixed building with gdb debugging support.
Do not install SIGPROF handler until it is needed.
Added DateTimeFormat to i18n API.
Fixed compilation on OpenBSD.
Take the ulimit into account when sizing the heap. OpenBSD users
may still have to increase the default ulimit to run heavy pages in
the browser.
2011-06-01: Version 3.4.1
Fixed JSON stringify issue with arrays.
Changed calls to JS builtins to be passed undefined when called with
implicit receiver.
Implemented the set trap for Harmony proxies. Proxies still need to
be enabled with the --harmony-proxies flag.
2011-05-30: Version 3.4.0
Changed calls to undefined property setters to not throw (issue 1355).
Made RegExp objects not callable.
Fixed issues on special case large JSON strings in new json parser
(issues http://crbug.com/83877 and http://crbug.com/84186).
Performance improvements on all platforms.
2011-05-25: Version 3.3.10
Fixed calls of strict mode function with an implicit receiver.
Fixed fast handling of arrays to properly deal with changes to the
Object prototype (issue 1403).
Changed strict mode poison pill to be the same type error function
(issue 1387).
Fixed a debug crash in arguments object handling (issue 1227).
Fixed a bug in deoptimization on x64 (issue 1404).
Performance improvements and bug fixes on all platforms.
2011-05-23: Version 3.3.9
Added DateTimeFormat class to experimental i18n API.
Extended preparser to give early errors for some strict mode
restrictions.
Removed legacy execScript function from V8.
Extended isolate API with the ability to add embedder-specific
data to an isolate.
Added basic support for polymorphic loads from JS and external
arrays.
Fixed bug in handling of switch statements in the optimizing
compiler.
2011-05-18: Version 3.3.8
Added MarkIndependent to the persistent handle API. Independent
handles are independent of all other persistent handles and can be
garbage collected more frequently.
Implemented the get trap for Harmony proxies. Proxies are enabled
with the --harmony-proxies flag.
Performance improvements and bug fixes on all platforms.
2011-05-16: Version 3.3.7
Updated MIPS infrastructure files.
Performance improvements and bug fixes on all platforms.
2011-05-11: Version 3.3.6
Updated MIPS infrastructure files.
Added method IsCallable for Object to the API.
Patch by Peter Varga.
2011-05-09: Version 3.3.5
Fixed build on FreeBSD. Patch by Akinori MUSHA.
Added check that receiver is JSObject on API calls.
Implemented CallAsConstructor method for Object in the API (Issue 1348).
Patch by Peter Varga.
Added CallAsFunction method to the Object class in the API (Issue 1336).
Patch by Peter Varga.
Added per-isolate locking and unlocking.
Fixed bug in x64 >>> operator (Issue 1359).
2011-05-04: Version 3.3.4
Implemented API to disallow code generation from strings for a context
(issue 1258).
Fixed bug with whitespaces in parseInt (issue 955).
Fixed bug with == comparison of Date objects (issue 1356).
Added GYP variables for ARM code generation:
v8_can_use_vfp_instructions, v8_can_use_unaligned_accesses
and v8_use_arm_eabi_hardfloat.
2011-05-02: Version 3.3.3
Added support for generating Visual Studio solution and project files
using GYP.
Implemented support for ARM EABI calling convention variation where
floating-point arguments are passed in registers (hardfloat).
Added Object::HasOwnProperty() to the API.
Added support for compressing startup data to reduce binary size. This
includes build time support and an API for the embedder to decompress
the startup data before initializing V8.
Reduced the profiling hooks overhead from >400% to 25% when using
ll_prof.
Performance improvements and bug fixes on all platforms.
2011-04-27: Version 3.3.2
Fixed crash bug on ARM with no VFP3 hardware.
Fixed compilation of V8 without debugger support.
Improved performance on JSLint.
Added support Float64 WebGL arrays.
Fixed crash bug in regexp replace.
2011-04-20: Version 3.3.1
Reduced V8 binary size by removing virtual functions from hydrogen.
Fixed crash bug on x64.
Performance improvements on ARM and IA32.
2011-04-18: Version 3.3.0
Fixed bug in floating point rounding in Crankshaft on ARM
(issue 958)
Fixed a number of issues with running without VFPv3 support on ARM
(issue 1315)
Introduced v8Locale.Collator, a partial implementation of Collator
per last ECMAScript meeting + mailing list.
Minor performance improvements and bug fixes.
2011-04-13: Version 3.2.10
Fixed bug in external float arrays on ARM (issue 1323).
Minor performance improvements and bug fixes.
2011-04-11: Version 3.2.9
Removed support for ABI prior to EABI on ARM.
Fixed multiple crash bugs.
Added GCMole to the repository, a simple static analysis tool that
searches for GC-unsafe evaluation order dependent callsites.
Made preparser API be exported in shared libraries.
Fixed multiple issues in EcmaScript 5 strict mode implementation.
Fixed mutable __proto__ property if object is not extensible
(Issue 1309).
Fixed auto suspension of the sampler thread.
2011-04-06: Version 3.2.8
Exposed WebGL typed array constructors in the shell sample.
Performance improvements on all platforms.
2011-04-04: Version 3.2.7
Disabled the original 'classic' V8 code generator. Crankshaft is
now the default on all platforms.
Changed the heap profiler to use more descriptive names.
Performance and stability improvements to isolates on all platforms.
2011-03-30: Version 3.2.6
Fixed xcode build warning in shell.cc (out of order initialization).
Fixed null-pointer dereference in the compiler when running without
SSE3 support (Chromium issue 77654).
Fixed x64 compilation error due to some dead code. (Issue 1286)
Introduced scons target to build the preparser stand-alone example.
Made FreeBSD build and pass all tests.
2011-03-28: Version 3.2.5
Fixed build with Irregexp interpreter (issue 1266).
Added Crankshaft support for external arrays.
Fixed two potential crash bugs.
2011-03-23: Version 3.2.4
Added isolates which allows several V8 instances in the same process.
This is controlled through the new Isolate class in the API.
Implemented more of EcmaScript 5 strict mode.
Reduced the time it takes to make detailed heap snapshot.
Added a number of commands to the ARM simulator and enhanced the ARM
disassembler.
2011-03-17: Version 3.2.3
Fixed a number of crash bugs.
Fixed Array::New(length) to return an array with a length (issue 1256).
Fixed FreeBSD build.
Changed __defineGetter__ to not throw (matching the behavior of Safari).
Implemented more of EcmaScript 5 strict mode.
Improved Crankshaft performance on all platforms.
2011-03-14: Version 3.2.2
Fixed a number of crash and correctness bugs.
Improved Crankshaft performance on all platforms.
Fixed Crankshaft on Solaris/Illumos.
2011-03-10: Version 3.2.1
Fixed a number of crash bugs.
Improved Crankshaft for x64 and ARM.
Implemented more of EcmaScript 5 strict mode.
2011-03-07: Version 3.2.0
Fixed a number of crash bugs.
Turned on Crankshaft by default on x64 and ARM.
Improved Crankshaft for x64 and ARM.
Implemented more of EcmaScript 5 strict mode.
2011-03-02: Version 3.1.8
Fixed a number of crash bugs.
Improved Crankshaft for x64 and ARM.
Implemented more of EcmaScript 5 strict mode.
Fixed issue with unaligned reads and writes on ARM.
Improved heap profiler support.
2011-02-28: Version 3.1.7
Fixed a number of crash bugs.
Improved Crankshaft for x64 and ARM.
Fixed implementation of indexOf/lastIndexOf for sparse
arrays (http://crbug.com/73940).
Fixed bug in map space compaction (http://crbug.com/59688).
Added support for direct getter accessors calls on ARM.
2011-02-24: Version 3.1.6
Fixed a number of crash bugs.
Added support for Cygwin (issue 64).
Improved Crankshaft for x64 and ARM.
Added Crankshaft support for stores to pixel arrays.
Fixed issue in CPU profiler with Crankshaft.
2011-02-16: Version 3.1.5
Change RegExp parsing to disallow /(*)/.
Added GDB JIT support for ARM.
Fixed several crash bugs.
Performance improvements on the IA32 platform.
2011-02-14: Version 3.1.4
Fixed incorrect compare of prototypes of the global object (issue
1082).
Fixed a bug in optimizing calls to global functions (issue 1106).
Made optimized Function.prototype.apply safe for non-JSObject first
arguments (issue 1128).
Fixed an error related to element accessors on Object.prototype and
parser errors (issue 1130).
Fixed a bug in sorting an array with large array indices (issue 1131).
Properly treat exceptions thrown while compiling (issue 1132).
Fixed bug in register requirements for function.apply (issue 1133).
Fixed a representation change bug in the Hydrogen graph construction
(issue 1134).
Fixed the semantics of delete on parameters (issue 1136).
Fixed a optimizer bug related to moving instructions with side effects
(issue 1138).
Added support for the global object in Object.keys (issue 1150).
Fixed incorrect value for Math.LOG10E
(issue http://code.google.com/p/chromium/issues/detail?id=72555)
Performance improvements on the IA32 platform.
Implement assignment to undefined reference in ES5 Strict Mode.
2011-02-09: Version 3.1.3
Fixed a bug triggered by functions with huge numbers of declared
arguments.
Fixed zap value aliasing a real object - debug mode only (issue 866).
Fixed issue where Array.prototype.__proto__ had been set to null
(issue 1121).
Fixed stability bugs in Crankshaft for x86.
2011-02-07: Version 3.1.2
Added better security checks when accessing properties via
Object.getOwnPropertyDescriptor.
Fixed bug in Object.defineProperty and related access bugs (issues
992, 1083 and 1092).
Added LICENSE.v8, LICENSE.strongtalk and LICENSE.valgrind to ease
copyright notice generation for embedders.
2011-02-02: Version 3.1.1
Perform security checks before fetching the value in
Object.getOwnPropertyDescriptor.
Fixed a bug in Array.prototype.splice triggered by passing no
arguments.
Fixed bugs in -0 in arithmetic and in Math.pow.
Fixed bugs in the register allocator and in switching from optimized
to unoptimized code.
2011-01-31: Version 3.1.0
Performance improvements on all platforms.
2011-01-28: Version 3.0.12
Added support for strict mode parameter and object property
validation.
Fixed a couple of crash bugs.
2011-01-25: Version 3.0.11
Fixed a bug in deletion of lookup slots that could cause global
variables to be accidentally deleted (http://crbug.com/70066).
Added support for strict mode octal literal verification.
Fixed a couple of crash bugs (issues 1070 and 1071).
2011-01-24: Version 3.0.10
Fixed External::Wrap for 64-bit addresses (issue 1037).
Fixed incorrect .arguments variable proxy handling in the full
code generator (issue 1060).
Introduced partial strict mode support.
Changed formatting of recursive error messages to match Firefox and
Safari (issue http://crbug.com/70334).
Fixed incorrect rounding for float-to-integer conversions for external
array types, which implement the Typed Array spec
(issue http://crbug.com/50972).
Performance improvements on the IA32 platform.
2011-01-19: Version 3.0.9
Added basic GDB JIT Interface integration.
Make invalid break/continue statements a syntax error instead of a
runtime error.
2011-01-17: Version 3.0.8
Exposed heap size limit to the heap statistics gathered by
the GetHeapStatistics API.
Wrapped external pointers more carefully (issue 1037).
Hardened the implementation of error objects to avoid setters
intercepting the properties set then throwing an error.
Avoided trashing the FPSCR when calculating Math.floor on ARM.
Performance improvements on the IA32 platform.
2011-01-10: Version 3.0.7
Stopped calling inherited setters when creating object literals
(issue 1015).
Changed interpretation of malformed \c? escapes in RegExp to match
JSC.
Enhanced the command-line debugger interface and fixed some minor
bugs in the debugger.
Performance improvements on the IA32 platform.
2011-01-05: Version 3.0.6
Allowed getters and setters on JSArray elements (issue 900).
Stopped JSON objects from hitting inherited setters (part of
issue 1015).
Allowed numbers and strings as names of getters/setters in object
initializer (issue 820).
Added use_system_v8 option to gyp (off by default), to make it easier
for Linux distributions to ship with system-provided V8 library.
Exported external array data accessors (issue 1016).
Added labelled thread names to help with debugging (on Linux).
2011-01-03: Version 3.0.5
Fixed a couple of cast errors for gcc-3.4.3.
Performance improvements in GC and IA32 code generator.
2010-12-21: Version 3.0.4
Added Date::ResetCache() to the API so that the cached values in the
Date object can be reset to allow live DST / timezone changes.
Extended existing support for printing (while debugging) the contents
of objects. Added support for printing objects from release builds.
Fixed V8 issues 989, 1006, and 1007.
2010-12-17: Version 3.0.3
Reapplied all changes for version 3.0.1.
Improved debugger protocol for remote debugging.
Added experimental support for using gyp to generate build files
for V8.
Fixed implementation of String::Write in the API (issue 975).
2010-12-15: Version 3.0.2
Revert version 3.0.1 and patch 3.0.1.1.
2010-12-13: Version 3.0.1
Added support for an experimental internationalization API as an
extension. This extension is disabled by default but can be enabled
when building V8. The ECMAScript internationalization strawman is
at http://wiki.ecmascript.org/doku.php?id=strawman:i18n_api.
Made RegExp character class parsing stricter. This mirrors a change
to RegExp parsing in WebKit.
Fixed a bug in Object.defineProperty when used to change attributes
of an existing property. It incorrectly set the property value to
undefined (issue 965).
Fixed several different compilation failures on various platforms
caused by the 3.0.0 release.
Optimized Math.pow so it can work on unboxed doubles.
Sped up quoting of JSON strings by removing one traversal of the
string.
2010-12-07: Version 3.0.0
Improved performance by (partially) addressing issue 957 on
IA-32. Still needs more work for the other architectures.
2010-11-29: Version 2.5.9
Fixed crashes during GC caused by partially initialize heap
objects.
Fixed bug in process sample that caused memory leaks.
Improved performance on ARM by implementing missing stubs and
inlining.