[riot-notifications] [RIOT-OS/RIOT] [PoC, RFC] Don't use `<stdio.h>` in RIOT (#13710)

chrysn notifications at github.com
Mon May 10 10:12:09 CEST 2021


This sounds like a worthy change, but also a big effort to do system-wide.

Is there a subset of this that we could get usable earlier and migrate where it matters most?

Point in case: https://github.com/RIOT-OS/RIOT/pull/16448#issuecomment-836317846 runs into stack overflows in DEVHELP mode in the panic handler, and can easily be moved to puts-style prints rather than printf ones -- but starts them through LOG_ERROR. Would it make sense, for example, to string-only log functions for these calling sites, while retaining printf (with all its stack usage) for the general case / while waiting for the full solution?

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