Hi, Since Bug 1004098 landed, the type of nsTArray lengths and indices is now size_t.
Code using nsTArrays is encouraged to use size_t for indexing them; in most cases, this does not really matter; however there is one case where this does matter, which is when user code stores the result of nsTArray::IndexOf(). Indeed, nsTArray::NoIndex used to be uint32_t(-1), which has the value 2^32 - 1. Now, nsTArray::NoIndex is size_t(-1) which, on x86-64, has the value 2^64 - 1. This means that code like this is no longer correct: uint32_t index = array.IndexOf(thing); Such code should be changed do: size_t index = array.IndexOf(thing); Or, better still (slightly pedantic but would have been correct all along): ArrayType::index_type index = array.IndexOf(thing); Where ArrayType is the type of that 'array' variable (one could use decltype(array) too). Thanks, Benoit _______________________________________________ dev-platform mailing list dev-platform@lists.mozilla.org https://lists.mozilla.org/listinfo/dev-platform
