[riot-notifications] [RIOT-OS/RIOT] sys/oneway-malloc: export oneway_malloc() (#15474)

Kaspar Schleiser notifications at github.com
Thu Nov 19 22:21:09 CET 2020

> Ok, I went with the second option. I'd rather avoid keeping around obsolete code just for the sake of it, so so I dropped the libc-emulating functions and only kept `oneway_malloc()` and `oneway_calloc()`.

Still, it will break when both oneway_malloc and newlib malloc is used, right? Because if oneway_malloc() allocates a bit using sbrk, and then free() frees a bit from the malloc pool, free() might free the oneway_malloc()ed block.

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