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                                            yuhiping

Found a bug which causes tx_byte_allocate() not thread-safe when use -O3 optimization!!

Hi, I just found that there is no **"-O3"** parameter for **CMAKE_ASM_FLAGS_RELEASE** in arm-none-eabi.cmake file. https://github.com/azure-rtos/threadx/blob/master/cmake/arm-none-eabi.cmake So, is **"-O3"** forbidden for ASM compilation?

Found a bug which causes tx_byte_allocate() not thread-safe when use -O3 optimization!!

> This is very cool bug. Probably calling dummy function from other c file after the `TX_RESTORE `will resolve it as the compiler now can't know if the global changed....