diff options
| -rw-r--r-- | js/src/jsarray.cpp | 36 | ||||
| -rw-r--r-- | js/src/jsarray.h | 7 |
2 files changed, 14 insertions, 29 deletions
diff --git a/js/src/jsarray.cpp b/js/src/jsarray.cpp index 87a62c2b8..0cd46ea36 100644 --- a/js/src/jsarray.cpp +++ b/js/src/jsarray.cpp @@ -511,24 +511,6 @@ struct ReverseIndexComparator } }; -bool -js::CanonicalizeArrayLengthValue(JSContext* cx, HandleValue v, uint32_t* newLen) -{ - double d; - - if (!ToUint32(cx, v, newLen)) - return false; - - if (!ToNumber(cx, v, &d)) - return false; - - if (d == *newLen) - return true; - - JS_ReportErrorNumberASCII(cx, GetErrorMessage, nullptr, JSMSG_BAD_ARRAY_LENGTH); - return false; -} - /* ES6 draft rev 34 (2015 Feb 20) 9.4.2.4 ArraySetLength */ bool js::ArraySetLength(JSContext* cx, Handle<ArrayObject*> arr, HandleId id, @@ -550,12 +532,22 @@ js::ArraySetLength(JSContext* cx, Handle<ArrayObject*> arr, HandleId id, } else { // Step 2 is irrelevant in our implementation. - // Steps 3-7. - MOZ_ASSERT_IF(attrs & JSPROP_IGNORE_VALUE, value.isUndefined()); - if (!CanonicalizeArrayLengthValue(cx, value, &newLen)) + // Step 3. + if (!ToUint32(cx, value, &newLen)) + return false; + + // Step 4. + double d; + if (!ToNumber(cx, value, &d)) return false; - // Step 8 is irrelevant in our implementation. + // Step 5. + if (d != newLen) { + JS_ReportErrorNumberASCII(cx, GetErrorMessage, nullptr, JSMSG_BAD_ARRAY_LENGTH); + return false; + } + + // Steps 6-8 are irrelevant in our implementation. } // Steps 9-11. diff --git a/js/src/jsarray.h b/js/src/jsarray.h index f9e11149f..ec2e4f514 100644 --- a/js/src/jsarray.h +++ b/js/src/jsarray.h @@ -117,13 +117,6 @@ NewValuePair(JSContext* cx, const Value& val1, const Value& val2, MutableHandleV extern bool WouldDefinePastNonwritableLength(HandleNativeObject obj, uint32_t index); -/* - * Canonicalize |vp| to a uint32_t value potentially suitable for use as an - * array length. - */ -extern bool -CanonicalizeArrayLengthValue(JSContext* cx, HandleValue v, uint32_t* canonicalized); - extern bool GetLengthProperty(JSContext* cx, HandleObject obj, uint32_t* lengthp); |