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authorUlrich Drepper <drepper@redhat.com>2004-12-22 20:10:10 +0000
committerUlrich Drepper <drepper@redhat.com>2004-12-22 20:10:10 +0000
commita334319f6530564d22e775935d9c91663623a1b4 (patch)
treeb5877475619e4c938e98757d518bb1e9cbead751 /misc/tsearch.c
parent0ecb606cb6cf65de1d9fc8a919bceb4be476c602 (diff)
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(CFLAGS-tst-align.c): Add -mpreferred-stack-boundary=4.
Diffstat (limited to 'misc/tsearch.c')
-rw-r--r--misc/tsearch.c15
1 files changed, 7 insertions, 8 deletions
diff --git a/misc/tsearch.c b/misc/tsearch.c
index 1e94d64..7c3a0aa 100644
--- a/misc/tsearch.c
+++ b/misc/tsearch.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1995, 1996, 1997, 2000, 2006 Free Software Foundation, Inc.
+/* Copyright (C) 1995, 1996, 1997, 2000 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Bernd Schmidt <crux@Pool.Informatik.RWTH-Aachen.DE>, 1997.
@@ -285,12 +285,11 @@ __tsearch (const void *key, void **vrootp, __compar_fn_t compar)
q->key = key; /* initialize new node */
q->red = 1;
q->left = q->right = NULL;
-
- if (nextp != rootp)
- /* There may be two red edges in a row now, which we must avoid by
- rotating the tree. */
- maybe_split_for_insert (nextp, rootp, parentp, r, p_r, 1);
}
+ if (nextp != rootp)
+ /* There may be two red edges in a row now, which we must avoid by
+ rotating the tree. */
+ maybe_split_for_insert (nextp, rootp, parentp, r, p_r, 1);
return q;
}
@@ -447,7 +446,7 @@ __tdelete (const void *key, void **vrootp, __compar_fn_t compar)
/* Q is R's brother, P is R's parent. The subtree with root
R has one black edge less than the subtree with root Q. */
q = p->right;
- if (q->red)
+ if (q != NULL && q->red)
{
/* If Q is red, we know that P is black. We rotate P left
so that Q becomes the top node in the tree, with P below
@@ -535,7 +534,7 @@ __tdelete (const void *key, void **vrootp, __compar_fn_t compar)
{
/* Comments: see above. */
q = p->left;
- if (q->red)
+ if (q != NULL && q->red)
{
q->red = 0;
p->red = 1;