advancedMultithreading & Concurrency335 of 436
Two threads increment a shared long with no synchronized and no atomic. Give two different reasons the result is wrong.
Tests whether you name both the read-modify-write race (lost updates from interleaved increments) and the separate non-atomicity of a 64-bit long/double read-write on a 32-bit JVM, which can produce a torn value made of two different writes' halves.
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