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lib: fix a possible NULL deference

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Silences a warning generated by clang.
This commit is contained in:
Rafael Zalamena 2017-06-16 11:08:43 -03:00
parent 45926e5874
commit 8f942af902
1 changed files with 4 additions and 0 deletions
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4
lib/openbsd-tree.c
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@ -222,6 +222,10 @@ rbe_remove_color(const struct rb_type *t, struct rb_tree *rbt,
{ {
struct rb_entry *tmp; struct rb_entry *tmp;
/* Silence clang possible NULL deference warning. */
if (parent == NULL)
return;
while ((rbe == NULL || RBE_COLOR(rbe) == RB_BLACK) && while ((rbe == NULL || RBE_COLOR(rbe) == RB_BLACK) &&
rbe != RBH_ROOT(rbt)) { rbe != RBH_ROOT(rbt)) {
if (RBE_LEFT(parent) == rbe) { if (RBE_LEFT(parent) == rbe) {