[lwip-users] Any known bugs in LWIP's internal heap?

[Peter]

Does anyone know if LWIP's internal heap management has this issue

https://www.eevblog.com/forum/programming/help-needed-with-some-heap-test-code/

Basically, the workaround in that particular case was to malloc and
immediately free the largest possible block.

That was a bug in a commonly used (Newlib) heap library. This issue
seems quite widely known.

LWIP and FreeRTOS, and TLS all have their internal heap managers.