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#define configUSE_NEWLIB_REENTRANT      1

and This will create a separate impure pointer for each task (handled by FreeRTOS).

Furthermore, we need to provide reentrant implementations for sbrk(), malloc_lock(), malloc_unlock(), env_lock(), env_unlock(). Broadly used is this independent implementation: newlib and FreeRTOS.

To use this implementation, we have to exclude the libc_mem_support from the libc_support component.