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Posted to commits@nuttx.apache.org by GitBox <gi...@apache.org> on 2020/03/06 15:51:20 UTC

[GitHub] [incubator-nuttx] patacongo commented on a change in pull request #460: Prevents NuttX crashing if MM_REGIONS is too small.

patacongo commented on a change in pull request #460: Prevents NuttX crashing if MM_REGIONS is too small.
URL: https://github.com/apache/incubator-nuttx/pull/460#discussion_r388982165
 
 

 ##########
 File path: mm/mm_heap/mm_initialize.c
 ##########
 @@ -75,6 +75,13 @@ void mm_addregion(FAR struct mm_heap_s *heap, FAR void *heapstart,
   uintptr_t heapend;
 #if CONFIG_MM_REGIONS > 1
   int IDX = heap->mm_nregions;
+
+  /* Writing past CONFIG_MM_REGIONS would have catastrophic consequences */
+  DEBUGASSERT(IDX < CONFIG_MM_REGIONS);
 
 Review comment:
   Coding standard requires a blank line after each comment.  tools/nxstyle should have caught this.

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