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Bug 1028802 - Don't dereference null pointer in AlignedArray::Rellaoc. r=jwatt

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This commit is contained in:
Matt Woodrow 2014-07-14 14:06:16 +12:00
parent 4257cf507f
commit 1df743478e
1 changed files with 6 additions and 0 deletions
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6
gfx/2d/Tools.h
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@ -152,6 +152,12 @@ struct AlignedArray
// We don't create an array of T here, since we don't want ctors to be
// invoked at the wrong places if we realign below.
mStorage = new (std::nothrow) uint8_t[storageByteCount.value()];
if (!mStorage) {
mStorage = nullptr;
mPtr = nullptr;
mCount = 0;
return;
}
if (uintptr_t(mStorage) % alignment) {
// Our storage does not start at a <alignment>-byte boundary. Make sure mPtr does!
mPtr = (T*)(uintptr_t(mStorage) + alignment - (uintptr_t(mStorage) % alignment));