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Add null pointer check to the c_rbtree_size function.

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This commit is contained in:
Andreas Schneider 2008-04-28 12:19:01 +02:00
parent 59ab78ed57
commit 745e264f26
1 changed files with 1 additions and 1 deletions
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src/std/c_rbtree.h
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@ -245,7 +245,7 @@ c_rbnode_t *c_rbtree_tail(c_rbtree_t *tree);
*
* @return The size of the red-black tree.
*/
#define c_rbtree_size(T) ((T)->size)
#define c_rbtree_size(T) (T) == NULL ? 0 : ((T)->size)
/**
* @brief Walk over a red-black tree.