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Make malloc return NULL when SAMD boards run out of RAM - #399

Merged

mikeysklar merged 5 commits into

adafruit:masterfrom

mikeysklar:checked-sbrk

Oct 17, 2026

Merged

Make malloc return NULL when SAMD boards run out of RAM#399
mikeysklar merged 5 commits into
adafruit:masterfrom
mikeysklar:checked-sbrk

Commits on Oct 16, 2026
- Replace _sbrk to make malloc fail when out of memory
  
  matthijskooijman
  authored and
  mikeysklar
  committed
  f463cce
- Let malloc leave some extra space for the stack
  
  matthijskooijman
  authored and
  mikeysklar
  committed
  750ca71
- Add license header to sbrk.c
  
  mikeysklar
  and
  claude
  committed
  afd2a67
- Let sbrk(0) succeed when the heap is near the stack
  
  mikeysklar
  and
  claude
  committed
  496fe33
- Include sam.h in sbrk.c so SAME51 boards build
  
  mikeysklar
  and
  claude
  committed
  e310bcd