Diff
Modified: trunk/JSTests/ChangeLog (285116 => 285117)
--- trunk/JSTests/ChangeLog 2021-11-01 17:50:16 UTC (rev 285116)
+++ trunk/JSTests/ChangeLog 2021-11-01 18:01:21 UTC (rev 285117)
@@ -1,3 +1,24 @@
+2021-11-01 Robin Morisset <rmoris...@apple.com>
+
+ JSGenericTypedArrayView<Adaptor>::set crashes if the length + objectOffset is > UINT32_MAX
+ https://bugs.webkit.org/show_bug.cgi?id=231975
+ rdar://84402043
+
+ Reviewed by Yusuke Suzuki.
+
+ - regress-84402043 is the testcase that revealed the problem.
+ - typed-array-set-large(-offset) test the same function, in the typed-array to typed-array case
+ - typed-array-large-slice tests the only caller that passes a non-0 objectOffset, and found other issues with it
+ - typed-array-large-oob-eventually-not.js is just another test of the Wasm4GB change that I had forgotten to commit
+
+ * stress/regress-84402043.js: Added.
+ * stress/typed-array-large-oob-eventually-not.js: Added.
+ (test):
+ * stress/typed-array-large-slice.js: Added.
+ (expect):
+ * stress/typed-array-set-large-offset.js: Added.
+ * stress/typed-array-set-large.js: Added.
+
2021-10-29 Yusuke Suzuki <ysuz...@apple.com>
Unreviewed, reduce # of iterations in stress/validate-int-52-ai-state.js due to Debug timeout
Added: trunk/JSTests/stress/regress-84402043.js (0 => 285117)
--- trunk/JSTests/stress/regress-84402043.js (rev 0)
+++ trunk/JSTests/stress/regress-84402043.js 2021-11-01 18:01:21 UTC (rev 285117)
@@ -0,0 +1,4 @@
+//@skip if $memoryLimited
+//@requireOptions("--watchdog=1000", "--watchdog-exception-ok")
+
+new Uint8Array({length: 2**32});
Added: trunk/JSTests/stress/typed-array-large-oob-eventually-not.js (0 => 285117)
--- trunk/JSTests/stress/typed-array-large-oob-eventually-not.js (rev 0)
+++ trunk/JSTests/stress/typed-array-large-oob-eventually-not.js 2021-11-01 18:01:21 UTC (rev 285117)
@@ -0,0 +1,29 @@
+//@ skip
+// This tests takes >4s even in release mode on an M1 MBP, so I'd rather avoid running it on EWS by default.
+
+let _oneGiga_ = 1024 * 1024 * 1024;
+
+function test(array, actualLength, string)
+{
+ for (var i = 0; i < 1000000; ++i) {
+ var index = actualLength + 10;
+ var value = 42;
+ array[index] = value;
+ var result = array[index];
+ if (result != undefined)
+ throw ("Expected " + value + " but got " + result + " in case " + string);
+ }
+ var value = 42;
+ var index = 10;
+ array[index] = value;
+ var result = array[index]
+ if (result != value)
+ throw ("In out-of-bounds case, expected undefined but got " + result + " in case " + string);
+}
+
+let threeGigs = 3 * oneGiga;
+let fourGigs = 4 * oneGiga;
+
+test(new Int8Array(threeGigs), threeGigs, "Int8Array/3GB");
+test(new Uint8Array(fourGigs), fourGigs, "Uint8Array/4GB");
+test(new Uint8ClampedArray(threeGigs), threeGigs, "Uint8ClampedArray/3GB");
Added: trunk/JSTests/stress/typed-array-large-slice.js (0 => 285117)
--- trunk/JSTests/stress/typed-array-large-slice.js (rev 0)
+++ trunk/JSTests/stress/typed-array-large-slice.js 2021-11-01 18:01:21 UTC (rev 285117)
@@ -0,0 +1,35 @@
+//@ skip if $memoryLimited or ($architecture != "arm64" && $architecture != "x86-64")
+
+let giga = 1024 * 1024 * 1024;
+
+let array = new Int8Array(4 * giga);
+array[0] = 1;
+array[giga] = 2;
+array[2 * giga] = 3;
+array[3 * giga] = 4;
+
+function expect(base, index, expected, string)
+{
+ let result = base [index]
+ if (result != expected)
+ throw "Expected " + expected + " but got " + result + " while testing " + string;
+}
+
+let slice0 = array.slice(giga);
+expect(slice0, 0, 2, "slice0");
+expect(slice0, giga, 3, "slice0");
+expect(slice0, 2*giga, 4, "slice0");
+
+let subslice0 = slice0.slice(giga);
+expect(subslice0, 0, 3, "subslice0");
+expect(subslice0, giga, 4, "subslice0");
+
+let slice1 = array.slice(giga, 2 * giga);
+expect(slice1, 0, 2, "slice1");
+
+let slice2 = array.slice(3 * giga);
+expect(slice2, 0, 4, "slice2");
+
+let slice3 = array.slice(4 * giga);
+let subSlice3 = slice3.slice(0);
+
Added: trunk/JSTests/stress/typed-array-set-large-offset.js (0 => 285117)
--- trunk/JSTests/stress/typed-array-set-large-offset.js (rev 0)
+++ trunk/JSTests/stress/typed-array-set-large-offset.js 2021-11-01 18:01:21 UTC (rev 285117)
@@ -0,0 +1,28 @@
+//@skip
+// This tests takes >4s even in release mode on an M1 MBP, so I'd rather avoid running it on EWS by default.
+
+let giga = 1024 * 1024 * 1024;
+let sourceLength = giga;
+let destinationLength = 4 * giga;
+let offset = 3 * giga;
+
+var source = new Uint8ClampedArray(sourceLength);
+for (var i = 0; i < 100; ++i)
+ source[i] = i & 0x3F;
+
+var destination = new Int8Array(destinationLength);
+destination.set(source, offset);
+
+// Before the offset
+let value = destination[42];
+if (value !== 0)
+ throw "At index " + 42 + ", expected 0 but got " + value;
+
+// After the offset
+for (var i = 0; i < 100; ++i) {
+ let index = offset + i;
+ let value = destination[index];
+ let expectedValue = (index - offset) & 0x3F;
+ if (value != expectedValue)
+ throw "At index " + index + ", expected " + expectedValue + " but got " + value;
+}
Added: trunk/JSTests/stress/typed-array-set-large.js (0 => 285117)
--- trunk/JSTests/stress/typed-array-set-large.js (rev 0)
+++ trunk/JSTests/stress/typed-array-set-large.js 2021-11-01 18:01:21 UTC (rev 285117)
@@ -0,0 +1,41 @@
+//@skip
+// This tests takes >4s even in release mode on an M1 MBP, so I'd rather avoid running it on EWS by default.
+
+let giga = 1024 * 1024 * 1024;
+let sourceLength = 2 * giga;
+let destinationLength = 3 * giga;
+let offset = giga;
+
+var source = new Uint8ClampedArray(sourceLength);
+for (var i = 0; i < 100; ++i)
+ source[i] = i & 0x3F;
+for (var i = 0; i < 100; ++i) {
+ let index = giga + i;
+ source[index] = index & 0x3F
+}
+
+var destination = new Int8Array(destinationLength);
+destination.set(source, offset);
+
+// Before the offset
+let value = destination[42];
+if (value !== 0)
+ throw "At index " + 42 + ", expected 0 but got " + value;
+
+// After the offset but before INT32_MAX
+for (var i = 0; i < 100; ++i) {
+ let index = offset + i;
+ let value = destination[index];
+ let expectedValue = (index - offset) & 0x3F;
+ if (value != expectedValue)
+ throw "At index " + index + ", expected " + expectedValue + " but got " + value;
+}
+
+// After the offset and greater than INT32_MAX
+for (var i = 0; i < 100; ++i) {
+ let index = offset + giga + i;
+ let value = destination[index];
+ let expectedValue = (index - offset) & 0x3F;
+ if (value != expectedValue)
+ throw "At index " + index + ", expected " + expectedValue + " but got " + value;
+}
Modified: trunk/Source/_javascript_Core/ChangeLog (285116 => 285117)
--- trunk/Source/_javascript_Core/ChangeLog 2021-11-01 17:50:16 UTC (rev 285116)
+++ trunk/Source/_javascript_Core/ChangeLog 2021-11-01 18:01:21 UTC (rev 285117)
@@ -1,3 +1,47 @@
+2021-11-01 Robin Morisset <rmoris...@apple.com>
+
+ JSGenericTypedArrayView<Adaptor>::set crashes if the length + objectOffset is > UINT32_MAX
+ https://bugs.webkit.org/show_bug.cgi?id=231975
+ rdar://84402043
+
+ Reviewed by Yusuke Suzuki.
+
+ UINT_MAX (and anything above it) is not a valid array index, so we cannot use JSObject::get(JSGlobalObject*, unsigned) with an index that big.
+ This was pointed by Yusuke in his review of my recent patch that introduced the problem (https://bugs.webkit.org/show_bug.cgi?id=229353#c21),
+ but I misunderstood the code and thought we could never get values that big at that point, thus only putting a RELEASE_ASSERT.
+ In this patch I instead apply his original suggestion to have a first loop using the (fast) JSObject::get(),
+ and a second loop for any large indices, using a slower but safe code path.
+
+ I also fixed an unrelated bug I noticed in Clobberize/AbstractInterpreter while testing the rest of the patch:
+ they were not aware that NewTypedArray can take a Int52RepUse child.
+
+ Finally, while trying to properly test this change, I discovered that genericTypedArrayViewProtoFuncSlice
+ (which is the only caller of JSGenericTypedArrayView<Adaptor>::set which passes it a non-0 objectOffset)
+ was still using unsigned everywhere instead of size_t, and that the same was true of all other functions in the same file.
+ So I fixed it in the same patch.
+
+ * dfg/DFGAbstractInterpreterInlines.h:
+ (JSC::DFG::AbstractInterpreter<AbstractStateType>::executeEffects):
+ * dfg/DFGClobberize.h:
+ (JSC::DFG::clobberize):
+ * runtime/JSArrayBufferConstructor.cpp:
+ (JSC::JSGenericArrayBufferConstructor<sharingMode>::constructImpl):
+ * runtime/JSGenericTypedArrayViewConstructorInlines.h:
+ (JSC::constructGenericTypedArrayViewImpl):
+ * runtime/JSGenericTypedArrayViewInlines.h:
+ (JSC::JSGenericTypedArrayView<Adaptor>::set):
+ * runtime/JSGenericTypedArrayViewPrototypeFunctions.h:
+ (JSC::argumentClampedIndexFromStartOrEnd):
+ (JSC::genericTypedArrayViewProtoFuncSet):
+ (JSC::genericTypedArrayViewProtoFuncCopyWithin):
+ (JSC::genericTypedArrayViewProtoFuncIncludes):
+ (JSC::genericTypedArrayViewProtoFuncIndexOf):
+ (JSC::genericTypedArrayViewProtoFuncJoin):
+ (JSC::genericTypedArrayViewProtoFuncFill):
+ (JSC::genericTypedArrayViewProtoFuncLastIndexOf):
+ (JSC::genericTypedArrayViewProtoFuncSlice):
+ (JSC::genericTypedArrayViewPrivateFuncSubarrayCreate):
+
2021-10-31 Cameron McCormack <hey...@apple.com>
Update Web IDL links to new URL
Modified: trunk/Source/_javascript_Core/dfg/DFGAbstractInterpreterInlines.h (285116 => 285117)
--- trunk/Source/_javascript_Core/dfg/DFGAbstractInterpreterInlines.h 2021-11-01 17:50:16 UTC (rev 285116)
+++ trunk/Source/_javascript_Core/dfg/DFGAbstractInterpreterInlines.h 2021-11-01 18:01:21 UTC (rev 285117)
@@ -2958,6 +2958,7 @@
case NewTypedArray:
switch (node->child1().useKind()) {
case Int32Use:
+ case Int52RepUse:
break;
case UntypedUse:
clobberWorld();
Modified: trunk/Source/_javascript_Core/dfg/DFGClobberize.h (285116 => 285117)
--- trunk/Source/_javascript_Core/dfg/DFGClobberize.h 2021-11-01 17:50:16 UTC (rev 285116)
+++ trunk/Source/_javascript_Core/dfg/DFGClobberize.h 2021-11-01 18:01:21 UTC (rev 285117)
@@ -1552,6 +1552,7 @@
case NewTypedArray:
switch (node->child1().useKind()) {
case Int32Use:
+ case Int52RepUse:
read(HeapObjectCount);
write(HeapObjectCount);
return;
Modified: trunk/Source/_javascript_Core/runtime/JSArrayBufferConstructor.cpp (285116 => 285117)
--- trunk/Source/_javascript_Core/runtime/JSArrayBufferConstructor.cpp 2021-11-01 17:50:16 UTC (rev 285116)
+++ trunk/Source/_javascript_Core/runtime/JSArrayBufferConstructor.cpp 2021-11-01 18:01:21 UTC (rev 285117)
@@ -81,9 +81,9 @@
Structure* structure = JSC_GET_DERIVED_STRUCTURE(vm, arrayBufferStructureWithSharingMode<sharingMode>, newTarget, callFrame->jsCallee());
RETURN_IF_EXCEPTION(scope, { });
- unsigned length;
+ size_t length;
if (callFrame->argumentCount()) {
- length = callFrame->uncheckedArgument(0).toIndex(globalObject, "length");
+ length = callFrame->uncheckedArgument(0).toTypedArrayIndex(globalObject, "length");
RETURN_IF_EXCEPTION(scope, encodedJSValue());
} else {
// Although the documentation doesn't say so, it is in fact correct to say
Modified: trunk/Source/_javascript_Core/runtime/JSGenericTypedArrayViewConstructorInlines.h (285116 => 285117)
--- trunk/Source/_javascript_Core/runtime/JSGenericTypedArrayViewConstructorInlines.h 2021-11-01 17:50:16 UTC (rev 285116)
+++ trunk/Source/_javascript_Core/runtime/JSGenericTypedArrayViewConstructorInlines.h 2021-11-01 18:01:21 UTC (rev 285117)
@@ -278,7 +278,7 @@
size_t offset = 0;
std::optional<size_t> length = std::nullopt;
if (jsDynamicCast<JSArrayBuffer*>(vm, firstValue) && argCount > 1) {
- offset = callFrame->uncheckedArgument(1).toIndex(globalObject, "byteOffset");
+ offset = callFrame->uncheckedArgument(1).toTypedArrayIndex(globalObject, "byteOffset");
RETURN_IF_EXCEPTION(scope, encodedJSValue());
if (argCount > 2) {
Modified: trunk/Source/_javascript_Core/runtime/JSGenericTypedArrayViewInlines.h (285116 => 285117)
--- trunk/Source/_javascript_Core/runtime/JSGenericTypedArrayViewInlines.h 2021-11-01 17:50:16 UTC (rev 285116)
+++ trunk/Source/_javascript_Core/runtime/JSGenericTypedArrayViewInlines.h 2021-11-01 18:01:21 UTC (rev 285117)
@@ -313,13 +313,8 @@
if (!success)
return false;
- // Verify that we won't ever call object->get() with an index of UINT_MAX or more
- RELEASE_ASSERT(isSumSmallerThanOrEqual(static_cast<uint64_t>(length), static_cast<uint64_t>(objectOffset), static_cast<uint64_t>(std::numeric_limits<unsigned>::max())));
- // We could optimize this case. But right now, we don't.
- for (size_t i = 0; i < length; ++i) {
- JSValue value = object->get(globalObject, static_cast<unsigned>(i + objectOffset));
- RETURN_IF_EXCEPTION(scope, false);
- bool success = setIndex(globalObject, offset + i, value);
+ auto trySetIndex = [&](size_t index, JSValue value) -> bool {
+ bool success = setIndex(globalObject, index, value);
EXCEPTION_ASSERT(!scope.exception() || !success);
if (!success) {
if (isDetached())
@@ -326,7 +321,26 @@
throwTypeError(globalObject, scope, typedArrayBufferHasBeenDetachedErrorMessage);
return false;
}
+ return true;
+ };
+ // It is not valid to ever call object->get() with an index of more than MAX_ARRAY_INDEX.
+ // So we iterate in the optimized loop up to MAX_ARRAY_INDEX, then if there is anything to do beyond this, we rely on slower code.
+ size_t safeUnadjustedLength = std::min(length, static_cast<size_t>(MAX_ARRAY_INDEX) + 1);
+ size_t safeLength = objectOffset <= safeUnadjustedLength ? safeUnadjustedLength - objectOffset : 0;
+ for (size_t i = 0; i < safeLength; ++i) {
+ ASSERT(i + objectOffset <= MAX_ARRAY_INDEX);
+ JSValue value = object->get(globalObject, static_cast<unsigned>(i + objectOffset));
+ RETURN_IF_EXCEPTION(scope, false);
+ if (!trySetIndex(offset + i, value))
+ return false;
}
+ for (size_t i = safeLength; i < length; ++i) {
+ Identifier ident = Identifier::from(vm, static_cast<uint64_t>(i + objectOffset));
+ JSValue value = object->get(globalObject, ident);
+ RETURN_IF_EXCEPTION(scope, false);
+ if (!trySetIndex(offset + i, value))
+ return false;
+ }
return true;
} }
Modified: trunk/Source/_javascript_Core/runtime/JSGenericTypedArrayViewPrototypeFunctions.h (285116 => 285117)
--- trunk/Source/_javascript_Core/runtime/JSGenericTypedArrayViewPrototypeFunctions.h 2021-11-01 17:50:16 UTC (rev 285116)
+++ trunk/Source/_javascript_Core/runtime/JSGenericTypedArrayViewPrototypeFunctions.h 2021-11-01 18:01:21 UTC (rev 285117)
@@ -86,7 +86,7 @@
return nullptr;
}
-inline unsigned argumentClampedIndexFromStartOrEnd(JSGlobalObject* globalObject, JSValue value, unsigned length, unsigned undefinedValue = 0)
+inline size_t argumentClampedIndexFromStartOrEnd(JSGlobalObject* globalObject, JSValue value, size_t length, size_t undefinedValue = 0)
{
if (value.isUndefined())
return undefinedValue;
@@ -94,9 +94,9 @@
double indexDouble = value.toIntegerOrInfinity(globalObject);
if (indexDouble < 0) {
indexDouble += length;
- return indexDouble < 0 ? 0 : static_cast<unsigned>(indexDouble);
+ return indexDouble < 0 ? 0 : static_cast<size_t>(indexDouble);
}
- return indexDouble > length ? length : static_cast<unsigned>(indexDouble);
+ return indexDouble > length ? length : static_cast<size_t>(indexDouble);
}
template<typename ViewClass>
@@ -110,13 +110,16 @@
if (UNLIKELY(!callFrame->argumentCount()))
return throwVMTypeError(globalObject, scope, "Expected at least one argument"_s);
- unsigned offset;
+ size_t offset;
if (callFrame->argumentCount() >= 2) {
double offsetNumber = callFrame->uncheckedArgument(1).toIntegerOrInfinity(globalObject);
RETURN_IF_EXCEPTION(scope, encodedJSValue());
if (UNLIKELY(offsetNumber < 0))
return throwVMRangeError(globalObject, scope, "Offset should not be negative");
- offset = static_cast<unsigned>(std::min(offsetNumber, static_cast<double>(std::numeric_limits<unsigned>::max())));
+ if (offsetNumber <= maxSafeInteger() && offsetNumber <= static_cast<double>(std::numeric_limits<size_t>::max()))
+ offset = offsetNumber;
+ else
+ offset = std::numeric_limits<size_t>::max();
} else
offset = 0;
@@ -126,7 +129,7 @@
JSObject* sourceArray = callFrame->uncheckedArgument(0).toObject(globalObject);
RETURN_IF_EXCEPTION(scope, { });
- unsigned length;
+ size_t length;
if (isTypedView(sourceArray->classInfo(vm)->typedArrayStorageType)) {
JSArrayBufferView* sourceView = jsCast<JSArrayBufferView*>(sourceArray);
if (UNLIKELY(sourceView->isDetached()))
@@ -136,7 +139,7 @@
} else {
JSValue lengthValue = sourceArray->get(globalObject, vm.propertyNames->length);
RETURN_IF_EXCEPTION(scope, encodedJSValue());
- length = lengthValue.toUInt32(globalObject);
+ length = lengthValue.toLength(globalObject);
}
RETURN_IF_EXCEPTION(scope, encodedJSValue());
@@ -156,18 +159,20 @@
if (thisObject->isDetached())
return throwVMTypeError(globalObject, scope, typedArrayBufferHasBeenDetachedErrorMessage);
- long length = thisObject->length();
- long to = argumentClampedIndexFromStartOrEnd(globalObject, callFrame->argument(0), length);
+ size_t length = thisObject->length();
+ size_t to = argumentClampedIndexFromStartOrEnd(globalObject, callFrame->argument(0), length);
RETURN_IF_EXCEPTION(scope, encodedJSValue());
- long from = argumentClampedIndexFromStartOrEnd(globalObject, callFrame->argument(1), length);
+ size_t from = argumentClampedIndexFromStartOrEnd(globalObject, callFrame->argument(1), length);
RETURN_IF_EXCEPTION(scope, encodedJSValue());
- long final = argumentClampedIndexFromStartOrEnd(globalObject, callFrame->argument(2), length, length);
+ size_t final = argumentClampedIndexFromStartOrEnd(globalObject, callFrame->argument(2), length, length);
RETURN_IF_EXCEPTION(scope, encodedJSValue());
if (final < from)
return JSValue::encode(callFrame->thisValue());
- long count = std::min(length - std::max(to, from), final - from);
+ ASSERT(to <= length);
+ ASSERT(from <= length);
+ size_t count = std::min(length - std::max(to, from), final - from);
if (thisObject->isDetached())
return throwVMTypeError(globalObject, scope, typedArrayBufferHasBeenDetachedErrorMessage);
@@ -187,7 +192,7 @@
if (thisObject->isDetached())
return throwVMTypeError(globalObject, scope, typedArrayBufferHasBeenDetachedErrorMessage);
- unsigned length = thisObject->length();
+ size_t length = thisObject->length();
if (!length)
return JSValue::encode(jsBoolean(false));
@@ -194,7 +199,7 @@
JSValue valueToFind = callFrame->argument(0);
- unsigned index = argumentClampedIndexFromStartOrEnd(globalObject, callFrame->argument(1), length);
+ size_t index = argumentClampedIndexFromStartOrEnd(globalObject, callFrame->argument(1), length);
RETURN_IF_EXCEPTION(scope, encodedJSValue());
if (thisObject->isDetached())
@@ -233,13 +238,13 @@
if (thisObject->isDetached())
return throwVMTypeError(globalObject, scope, typedArrayBufferHasBeenDetachedErrorMessage);
- unsigned length = thisObject->length();
+ size_t length = thisObject->length();
if (!length)
return JSValue::encode(jsNumber(-1));
JSValue valueToFind = callFrame->argument(0);
- unsigned index = argumentClampedIndexFromStartOrEnd(globalObject, callFrame->argument(1), length);
+ size_t index = argumentClampedIndexFromStartOrEnd(globalObject, callFrame->argument(1), length);
RETURN_IF_EXCEPTION(scope, encodedJSValue());
if (thisObject->isDetached())
@@ -269,12 +274,12 @@
if (thisObject->isDetached())
return throwVMTypeError(globalObject, scope, typedArrayBufferHasBeenDetachedErrorMessage);
- unsigned length = thisObject->length();
+ size_t length = thisObject->length();
auto joinWithSeparator = [&] (StringView separator) -> EncodedJSValue {
JSStringJoiner joiner(globalObject, separator, length);
RETURN_IF_EXCEPTION(scope, { });
if (!thisObject->isDetached()) {
- for (unsigned i = 0; i < length; i++) {
+ for (size_t i = 0; i < length; i++) {
JSValue value;
if constexpr (ViewClass::Adaptor::canConvertToJSQuickly)
value = thisObject->getIndexQuickly(i);
@@ -287,7 +292,7 @@
RETURN_IF_EXCEPTION(scope, { });
}
} else {
- for (unsigned i = 0; i < length; i++)
+ for (size_t i = 0; i < length; i++)
joiner.appendEmptyString();
}
RELEASE_AND_RETURN(scope, JSValue::encode(joiner.join(globalObject)));
@@ -317,19 +322,19 @@
if (thisObject->isDetached())
return throwVMTypeError(globalObject, scope, typedArrayBufferHasBeenDetachedErrorMessage);
- unsigned length = thisObject->length();
+ size_t length = thisObject->length();
auto nativeValue = ViewClass::toAdaptorNativeFromValue(globalObject, callFrame->argument(0));
RETURN_IF_EXCEPTION(scope, { });
- unsigned start = argumentClampedIndexFromStartOrEnd(globalObject, callFrame->argument(1), length, 0);
+ size_t start = argumentClampedIndexFromStartOrEnd(globalObject, callFrame->argument(1), length, 0);
RETURN_IF_EXCEPTION(scope, { });
- unsigned end = argumentClampedIndexFromStartOrEnd(globalObject, callFrame->argument(2), length, length);
+ size_t end = argumentClampedIndexFromStartOrEnd(globalObject, callFrame->argument(2), length, length);
RETURN_IF_EXCEPTION(scope, { });
if (thisObject->isDetached())
return throwVMTypeError(globalObject, scope, typedArrayBufferHasBeenDetachedErrorMessage);
- for (unsigned index = start; index < end; ++index)
+ for (size_t index = start; index < end; ++index)
thisObject->setIndexQuicklyToNativeValue(index, nativeValue);
return JSValue::encode(thisObject);
@@ -345,7 +350,7 @@
if (thisObject->isDetached())
return throwVMTypeError(globalObject, scope, typedArrayBufferHasBeenDetachedErrorMessage);
- unsigned length = thisObject->length();
+ size_t length = thisObject->length();
if (!length)
return JSValue::encode(jsNumber(-1));
@@ -352,7 +357,7 @@
JSValue valueToFind = callFrame->argument(0);
- int index = length - 1;
+ size_t index = length - 1;
if (callFrame->argumentCount() >= 2) {
JSValue fromValue = callFrame->uncheckedArgument(1);
double fromDouble = fromValue.toIntegerOrInfinity(globalObject);
@@ -363,7 +368,7 @@
return JSValue::encode(jsNumber(-1));
}
if (fromDouble < length)
- index = static_cast<unsigned>(fromDouble);
+ index = static_cast<size_t>(fromDouble);
}
if (thisObject->isDetached())
@@ -377,10 +382,14 @@
scope.assertNoExceptionExceptTermination();
RELEASE_ASSERT(!thisObject->isDetached());
- for (; index >= 0; --index) {
+ // We always have at least one iteration, since we checked that length is different from 0 earlier.
+ do {
if (array[index] == targetOption)
return JSValue::encode(jsNumber(index));
- }
+ if (!index)
+ break;
+ --index;
+ } while (true);
return JSValue::encode(jsNumber(-1));
}
@@ -463,11 +472,11 @@
if (thisObject->isDetached())
return throwVMTypeError(globalObject, scope, typedArrayBufferHasBeenDetachedErrorMessage);
- unsigned thisLength = thisObject->length();
+ size_t thisLength = thisObject->length();
- unsigned begin = argumentClampedIndexFromStartOrEnd(globalObject, callFrame->argument(0), thisLength);
+ size_t begin = argumentClampedIndexFromStartOrEnd(globalObject, callFrame->argument(0), thisLength);
RETURN_IF_EXCEPTION(scope, encodedJSValue());
- unsigned end = argumentClampedIndexFromStartOrEnd(globalObject, callFrame->argument(1), thisLength, thisLength);
+ size_t end = argumentClampedIndexFromStartOrEnd(globalObject, callFrame->argument(1), thisLength, thisLength);
RETURN_IF_EXCEPTION(scope, encodedJSValue());
if (thisObject->isDetached())
@@ -477,7 +486,7 @@
end = std::max(begin, end);
ASSERT(end >= begin);
- unsigned length = end - begin;
+ size_t length = end - begin;
MarkedArgumentBuffer args;
args.append(jsNumber(length));
@@ -569,7 +578,7 @@
return throwVMTypeError(globalObject, scope, typedArrayBufferHasBeenDetachedErrorMessage);
// Get the length here; later assert that the length didn't change.
- unsigned thisLength = thisObject->length();
+ size_t thisLength = thisObject->length();
// I would assert that the arguments are integers here but that's not true since
// https://tc39.github.io/ecma262/#sec-tointeger allows the result of the operation
@@ -576,9 +585,9 @@
// to be +/- Infinity and -0.
ASSERT(callFrame->argument(0).isNumber());
ASSERT(callFrame->argument(1).isUndefined() || callFrame->argument(1).isNumber());
- unsigned begin = argumentClampedIndexFromStartOrEnd(globalObject, callFrame->argument(0), thisLength);
+ size_t begin = argumentClampedIndexFromStartOrEnd(globalObject, callFrame->argument(0), thisLength);
scope.assertNoException();
- unsigned end = argumentClampedIndexFromStartOrEnd(globalObject, callFrame->argument(1), thisLength, thisLength);
+ size_t end = argumentClampedIndexFromStartOrEnd(globalObject, callFrame->argument(1), thisLength, thisLength);
scope.assertNoException();
RELEASE_ASSERT(!thisObject->isDetached());
@@ -587,8 +596,8 @@
end = std::max(begin, end);
ASSERT(end >= begin);
- unsigned offset = begin;
- unsigned length = end - begin;
+ size_t offset = begin;
+ size_t length = end - begin;
RefPtr<ArrayBuffer> arrayBuffer = thisObject->possiblySharedBuffer();
if (UNLIKELY(!arrayBuffer)) {
@@ -597,7 +606,7 @@
}
RELEASE_ASSERT(thisLength == thisObject->length());
- unsigned newByteOffset = thisObject->byteOffset() + offset * ViewClass::elementSize;
+ size_t newByteOffset = thisObject->byteOffset() + offset * ViewClass::elementSize;
JSObject* defaultConstructor = globalObject->typedArrayConstructor(ViewClass::TypedArrayStorageType);
JSValue species = callFrame->uncheckedArgument(2);
