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Load-Exclusive and Store-Exclusive usage confusion

rainbowbirds_aes

When I read "Load-Exclusive and Store-Exclusive usage restrictions" in ARM Architecture Reference Manual ARMv7-A and ARMv7-R. There is this text ： If the target virtual address of an STREX is different from the virtual address of the preceding LDREX
in the same thread of execution, behavior can be UNPREDICTABLE.
question：will this happen ？ could give me a example except code written error