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Bug 973563 - Correct assertion for zero-sized structs r=till

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This commit is contained in:
Nicholas D. Matsakis 2014-02-24 14:31:15 -05:00
parent 23e3540b9f
commit 0cb6db1009
2 changed files with 11 additions and 1 deletions
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3
js/src/builtin/TypedObject.js
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@ -303,7 +303,8 @@ TypedObjectPointer.prototype.moveToFieldIndex = function(index) {
"bad field descr"); "bad field descr");
assert(TO_INT32(fieldOffset) === fieldOffset, assert(TO_INT32(fieldOffset) === fieldOffset,
"bad field offset"); "bad field offset");
assert(fieldOffset >= 0 && fieldOffset < DESCR_SIZE(this.descr), assert(fieldOffset >= 0 &&
(fieldOffset + DESCR_SIZE(fieldDescr)) <= DESCR_SIZE(this.descr),
"out of bounds field offset"); "out of bounds field offset");
this.descr = fieldDescr; this.descr = fieldDescr;

9
js/src/jit-test/tests/TypedObject/bug973563.js Normal file
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@ -0,0 +1,9 @@
// Test that empty sized structs don't trigger any assertion failures.
// Public domain.
if (!this.hasOwnProperty("TypedObject"))
quit();
var PointType = new TypedObject.StructType({});
var LineType = new TypedObject.StructType({source: PointType, target: PointType});
var fromAToB = new LineType({source: {x: 22, y: 44}, target: {x: 66, y: 88}});