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StringStore originally worked by returning a 32bit pointer to a memory location and storing the length with that pointer. This allowed 4GB to be stored in 64KB blocks. With 1.1 we used the high bit to signify a TEXT/BLOB string of > 64KB reducing the max capacity to 2GB but without any bounds checking. So, if you went over the 2GB mark the getter would think you are trying to get a long string instead of a short one and come up empty. It would then return NULL. This patch uses 64bit memory points still retaining the high bit to signify long strings. It also now stores the length with the string rather than with the pointer to allow the full 64bits for pointers. It also adds a bounds check for small strings.