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authorDJ Delorie <dj@redhat.com>2009-05-29 03:01:15 +0000
committerDJ Delorie <dj@redhat.com>2009-05-29 03:01:15 +0000
commit0dc69033a0bf41ec851f19ca191949bf95e19b2c (patch)
tree7ebf3534f5bf18e2ae694d74a5a090dd36218789 /libiberty/fibheap.c
parent4a657b0d926d4a582ee5f41aef9e8dab97e39c29 (diff)
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merge from gcc
Diffstat (limited to 'libiberty/fibheap.c')
-rw-r--r--libiberty/fibheap.c10
1 files changed, 9 insertions, 1 deletions
diff --git a/libiberty/fibheap.c b/libiberty/fibheap.c
index c032149..a37ee4e 100644
--- a/libiberty/fibheap.c
+++ b/libiberty/fibheap.c
@@ -214,7 +214,10 @@ fibheap_replace_key_data (fibheap_t heap, fibnode_t node,
node->key = key;
y = node->parent;
- if (okey == key)
+ /* Short-circuit if the key is the same, as we then don't have to
+ do anything. Except if we're trying to force the new node to
+ be the new minimum for delete. */
+ if (okey == key && okey != FIBHEAPKEY_MIN)
return odata;
/* These two compares are specifically <= 0 to make sure that in the case
@@ -256,6 +259,11 @@ fibheap_delete_node (fibheap_t heap, fibnode_t node)
/* To perform delete, we just make it the min key, and extract. */
fibheap_replace_key (heap, node, FIBHEAPKEY_MIN);
+ if (node != heap->min)
+ {
+ fprintf (stderr, "Can't force minimum on fibheap.\n");
+ abort ();
+ }
fibheap_extract_min (heap);
return ret;