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The function ILibWebClient_ProcessWebSocketData in microstack/ILibWebClient.c reads a 64-bit integer from an address that is only 2-byte aligned. ARM64 kernels support unaligned accesses from userspace, but it is not enabled by default and frowned upon - the required exception handling is ugly and inefficient. Fix that illegal access in a simple way with a memcpy. More involved and efficient solutions are also available, such as replacing the byte order conversion functions with de/serialise functions that take a pointer. Fixes: https://github.com/Ylianst/MeshAgent/issues/183 Signed-off-by: Phil Elwell <phil@raspberrypi.com>