@ -1177,7 +1177,14 @@ Incompatible changes (not exhaustive, also see RELEASES.rst):
Known issues
============
FIXME.
* Some non-compliant behavior for array indices near 2G or 4G elements.
* RegExp parser is strict and won't accept some real world RegExps which
are technically not compliant with Ecmascript E5/E5.1 specification
but allowed in ES2015 Annex B.
* Final mantissa bit rounding issues in the internal number-to-string
conversion.
Raw issues from test runs
=========================
@ -1185,14 +1192,64 @@ Raw issues from test runs
API tests
---------
FIXME.
::
test-to-number.c: fail; 15 diff lines; known issue: number parsing bug for strings containing NUL characters (e.g. '\u0000')
Ecmascript tests
----------------
FIXME.
::
test-bi-array-proto-push: fail; 30 diff lines; known issue: array length above 2^32-1 not supported
test-bi-array-push-maxlen: fail; 17 diff lines; known issue: array length above 2^32-1 not supported
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
test-bi-function-nonstd-caller-prop: fail; 175 diff lines; requires special feature options: DUK_USE_NONSTD_FUNC_CALLER_PROPERTY
test-bi-global-parseint: fail; 89 diff lines; known issue: rounding differences for parsing integers larger than 2^53
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
test-bi-json-enc-proxy: fail; 13 diff lines; known issue: JSON enumeration behavior for Proxy targets is incomplete and uses 'enumerate' trap instead of 'ownKeys' trap
test-bi-number-proto-toexponential: fail; 75 diff lines; known issue: corner case rounding errors in toExponential()
test-bi-number-proto-tostring: fail; 46 diff lines; known issue: expect strings to be checked, but probably Duktape rounding issues
test-bi-proxy-object-tostring: fail; 6 diff lines; known issue: Object class handling for Proxy objects is incomplete
test-bi-regexp-gh39: fail; 7 diff lines; known issue: requires leniency for non-standard regexps
test-bi-symbol-coercion: fail; 9 diff lines; known issue: no @@toPrimitive coercion yet
test-bi-typedarray-misc-inherited-accessors: fail; 21 diff lines; known issue: typed array .length etc not yet inherited accessors (ES2015 requirement)
test-bug-date-timeval-edges: fail; 17 diff lines; known issue: test case depends on current timezone offset
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)
test-bug-json-parse-__proto__: fail; 18 diff lines; known issue: when ES2015 __proto__ enabled, JSON.parse() parses '__proto__' property incorrectly when a specially crafted reviver is used
test-bug-numconv-1e23: fail; 10 diff lines; known issue: corner case in floating point parse rounding
test-bug-numconv-denorm-toprec: fail; 7 diff lines; known issue: in a denormal corner case toPrecision() can output a zero leading digit
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
test-dev-16bit-overflows: fail; 11 diff lines; requires special feature options: requires 16-bit field options
test-dev-func-cons-args: fail; 18 diff lines; known issue: corner cases for 'new Function()' when arguments and code are given as strings
test-dev-func-varmap-drop: fail; 46 diff lines; requires special feature options: debugger support must be disabled
test-dev-lightfunc-accessor: fail; 50 diff lines; requires special feature options: DUK_USE_LIGHTFUNC_BUILTINS
test-dev-lightfunc-finalizer: fail; 8 diff lines; requires special feature options: DUK_USE_LIGHTFUNC_BUILTINS
test-dev-lightfunc: fail; 518 diff lines; requires special feature options: DUK_USE_LIGHTFUNC_BUILTINS
test-dev-object-literal-method-computed: fail; 8 diff lines; known issue: computed name for object literal method shorthand not yet implemented
test-dev-yield-after-callapply: fail; 8 diff lines; known issue: yield() not allowed when function called via Function.prototype.(call|apply)()
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
test-numconv-parse-misc: fail; 12 diff lines; known issue: rounding corner case for 1e+23 (parses/prints as 1.0000000000000001e+23)
test-numconv-tostring-gen: fail; 257 diff lines; known issue: rounding corner cases in number-to-string coercion
test-numconv-tostring-misc: fail; 6 diff lines; known issue: rounding corner case, 1e+23 string coerces to 1.0000000000000001e+23
test-regexp-empty-quantified: fail; 16 diff lines; known issue: a suitable empty quantified (e.g. '(x*)*') causes regexp parsing to terminate due to step limit
test-regexp-invalid-charclass: fail; 7 diff lines; known issue: some invalid character classes are accepted (e.g. '[\d-z]' and '[z-x]')
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]) {...}')
test262
-------
FIXME.
::
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
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.
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)
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?)
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?)
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
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
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?)
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?)
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?)
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?)
ch15/15.4/15.4.4/15.4.4.6/S15.4.4.6_A4_T1 in non-strict mode // diagnosed: Array .pop() fast path (can be disabled) ignores inherited array index properties
Sami Vaarala
8 years ago
GitHub