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102 lines
8.2 KiB
102 lines
8.2 KiB
=========================
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Duktape 1.6 release notes
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=========================
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Release overview
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================
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Main changes in this release (see RELEASES.rst for full details):
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* Add duk_suspend() and duk_resume() API calls, backported from Duktape 2.0.
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Upgrading from Duktape 1.5.x
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============================
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No action (other than recompiling) should be needed for most users to upgrade
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from Duktape v1.5.x.
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Known issues
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============
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This release has the following known issues worth noting:
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* Non-compliant behavior for array indices near 2G or 4G elements.
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* RegExp parser is strict and won't accept some real world RegExps which
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are technically not compliant with ECMAScript E5/E5.1 specification.
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* Final mantissa bit rounding issues in the internal number-to-string
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conversion.
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* On FreeBSD 10.x (at least 10.1 and 10.2): Clang with ``-m32`` generates
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incorrect code for union assignments needed by Duktape's 8-byte packed
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value encoding (see
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https://github.com/svaarala/duktape/blob/master/misc/clang_aliasing.c).
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The issue can be detected by defining ``DUK_OPT_SELF_TESTS``. A workaround
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is to avoid packed types in this case by defining ``DUK_OPT_NO_PACKED_TVAL``.
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Raw issues from test runs
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=========================
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API tests
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---------
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::
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test-to-number.c: fail; 15 diff lines; known issue: number parsing bug for strings containing NUL characters (e.g. '\u0000')
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ECMAScript tests
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----------------
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::
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test-bi-array-proto-push: fail; 30 diff lines; known issue: array length above 2^32-1 not supported
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test-bi-array-push-maxlen: fail; 17 diff lines; known issue: array length above 2^32-1 not supported
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test-bi-date-tzoffset-brute-fi: fail; 12 diff lines; known issue: year 1970 deviates from expected, Duktape uses equiv. year for 1970 on purpose at the moment; requires special feature options: test case has been written for Finnish locale
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test-bi-function-nonstd-caller-prop: fail; 178 diff lines; requires special feature options: DUK_OPT_NONSTD_FUNC_CALLER_PROPERTY
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test-bi-global-parseint: fail; 108 diff lines; known issue: rounding differences for parsing integers larger than 2^53
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test-bi-json-dec-types: fail; 21 diff lines; known issue: '\x' should be allowed by eval() but not by JSON.parse(), Duktape rejects '\x' in both
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test-bi-json-enc-proplist-dups: fail; 8 diff lines; known issue: JSON.stringify() can be given a property list to serialize; duplicates should be eliminated but Duktape (and other engines) will happily serialize a property multiple times
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test-bi-json-enc-proxy: fail; 18 diff lines; known issue: JSON enumeration behavior for Proxy targets is incomplete and uses 'enumerate' trap instead of 'ownKeys' trap
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test-bi-number-proto-toexponential: fail; 75 diff lines; known issue: corner case rounding errors in toExponential()
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test-bi-number-proto-tostring: fail; 46 diff lines; known issue: expect strings to be checked, but probably Duktape rounding issues
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test-bi-proxy-object-tostring: fail; 6 diff lines; known issue: Object class handling for Proxy objects is incomplete
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test-bi-regexp-gh39: fail; 5 diff lines; known issue: requires leniency for non-standard regexps
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test-bug-dataview-buffer-prop: fail; 20 diff lines; known issue: DataView .buffer property misleading when DataView argument is not an ArrayBuffer (custom behavior)
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test-bug-date-timeval-edges: fail; 17 diff lines; known issue: test case depends on current timezone offset
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test-bug-enum-shadow-nonenumerable: fail; 12 diff lines; known issue: corner case enumeration semantics, not sure what correct behavior is (test262 ch12/12.6/12.6.4/12.6.4-2)
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test-bug-invalid-oct-as-dec: fail; 16 diff lines; known issue: V8/Rhino parse invalid octal constants as decimal values, Duktape doesn't at the moment
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test-bug-json-parse-__proto__: fail; 18 diff lines; known issue: when ES6 __proto__ enabled, JSON.parse() parses '__proto__' property incorrectly when a specially crafted reviver is used
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test-bug-numconv-1e23: fail; 10 diff lines; known issue: corner case in floating point parse rounding
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test-bug-numconv-denorm-toprec: fail; 7 diff lines; known issue: in a denormal corner case toPrecision() can output a zero leading digit
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test-bug-tonumber-u0000: fail; 7 diff lines; known issue: '\u0000' should ToNumber() coerce to NaN, but now coerces to zero like an empty string
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test-dev-bound-thread-start-func: fail; 13 diff lines; known issue: initial function of a new coroutine cannot be bound
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test-dev-func-cons-args: fail; 18 diff lines; known issue: corner cases for 'new Function()' when arguments and code are given as strings
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test-dev-lightfunc-accessor: fail; 50 diff lines; requires special feature options: DUK_OPT_LIGHTFUNC_BUILTINS
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test-dev-lightfunc-finalizer: fail; 8 diff lines; requires special feature options: DUK_OPT_LIGHTFUNC_BUILTINS
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test-dev-lightfunc: fail; 459 diff lines; requires special feature options: DUK_OPT_LIGHTFUNC_BUILTINS
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test-dev-yield-after-callapply: fail; 8 diff lines; known issue: yield() not allowed when function called via Function.prototype.(call|apply)()
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test-lex-unterminated-hex-uni-escape: fail; 29 diff lines; known issue: unterminated hex escapes should be parsed leniently, e.g. '\uX' -> 'uX' but Duktape now refuses to parse them
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test-numconv-parse-misc: fail; 12 diff lines; known issue: rounding corner case for 1e+23 (parses/prints as 1.0000000000000001e+23)
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test-numconv-tostring-gen: fail; 257 diff lines; known issue: rounding corner cases in number-to-string coercion
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test-numconv-tostring-misc: fail; 6 diff lines; known issue: rounding corner case, 1e+23 string coerces to 1.0000000000000001e+23
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test-regexp-empty-quantified: fail; 15 diff lines; known issue: a suitable empty quantified (e.g. '(x*)*') causes regexp parsing to terminate due to step limit
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test-regexp-invalid-charclass: fail; 7 diff lines; known issue: some invalid character classes are accepted (e.g. '[\d-z]' and '[z-x]')
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test-stmt-for-in-lhs: fail; 29 diff lines; known issue: for-in allows some invalid left-hand-side expressions which cause a runtime ReferenceError instead of a compile-time SyntaxError (e.g. 'for (a+b in [0,1]) {...}')
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test262
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-------
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::
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ch12/12.6/12.6.4/12.6.4-2 in non-strict mode // diagnosed: enumeration corner case issue, see test-bug-enum-shadow-nonenumerable.js
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ch15/15.10/15.10.2/15.10.2.5/S15.10.2.5_A1_T5 in non-strict mode // diagnosed: Duktape bug, matching /(a*)b\1+/ against 'baaaac' causes first capture to match the empty string; the '\1+' part will then use the '+' quantifier over the empty string. As there is no handling to empty quantified now, Duktape bails out with a RangeError.
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ch15/15.10/15.10.2/15.10.2.9/S15.10.2.9_A1_T5 in non-strict mode // diagnosed: Duktape bug, matching /(a*)b\1+/ against 'baaac' causes first capture to be empty, the '\1+' part will then quantify over an empty string leading to Duktape RangeError (there is no proper handling for an empty quantified now)
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ch15/15.4/15.4.4/15.4.4.10/S15.4.4.10_A3_T3 in non-strict mode // diagnosed: probably Duktape bug related to long array corner cases or 'length' sign handling (C typing?)
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ch15/15.4/15.4.4/15.4.4.12/S15.4.4.12_A3_T3 in non-strict mode // diagnosed: probably Duktape bug related to long array corner cases or 'length' sign handling (C typing?)
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ch15/15.4/15.4.4/15.4.4.14/15.4.4.14-5-12 in non-strict mode // diagnosed: Array length over 2G, not supported right now
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ch15/15.4/15.4.4/15.4.4.14/15.4.4.14-5-16 in non-strict mode // diagnosed: Array length over 2G, not supported right now
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ch15/15.4/15.4.4/15.4.4.14/15.4.4.14-9-9 in non-strict mode // diagnosed: a.indexOf(<n>,4294967290) returns -1 for all indices n=2,3,4,5 but is supposed to return 4294967294 for n=2. The cause is long array corner case handling, possibly signed length handling (C typing?)
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ch15/15.4/15.4.4/15.4.4.15/15.4.4.15-5-12 in non-strict mode // diagnosed: probably Duktape bug: long array corner cases (C typing?)
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ch15/15.4/15.4.4/15.4.4.15/15.4.4.15-5-16 in non-strict mode // diagnosed: probably Duktape bug: long array corner cases (C typing?)
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ch15/15.4/15.4.4/15.4.4.15/15.4.4.15-8-9 in non-strict mode // diagnosed: probably Duktape bug: long array corner cases (C typing?)
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