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4.1 __aeabi_errno_addr()

The __aeabi_errno_addr() returns the address of the C library errno variable when the C library attempts to read or write errno.


volatile int *__aeabi_errno_addr(void);


The library provides a default implementation. It is unlikely that you have to re-implement this function.
This function is not part of the C library standard, but the ARM® C library supports it as an extension.
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