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The calls to orb_advertise were being mishandled throughout the code. There were ::close() calls on memory pointers, there were checks against < 0 when it is a pointer to a object and values larger than 0x7ffffffff are valid. Some places orb_advert_t variables were being initialized as 0 other places as -1. The orb_advert_t type was changed to uintptr_t so the pointer value would not be wrapped as a negative number. This was causing a failure on ARM. Tests for < 0 were changed to == 0 since a null pointer is the valid representation for error, or uninitialized. Signed-off-by: Mark Charlebois <charlebm@gmail.com>