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From: rguenth <rguenth@138bc75d-0d04-0410-961f-82ee72b054a4>
Date: Thu, 19 Apr 2012 12:44:07 +0000
Subject: [PATCH] ira_allocno_object_iter_cond: Avoid out-of-bound array
access.
2012-04-19 Richard Guenther <rguenther@suse.de>
* ira-int.h (ira_allocno_object_iter_cond): Avoid out-of-bound
array access.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@186590 138bc75d-0d04-0410-961f-82ee72b054a4
---
gcc/ira-int.h | 9 +++++++--
1 file changed, 7 insertions(+), 2 deletions(-)
diff --git a/gcc/ira-int.h b/gcc/ira-int.h
index 9faabb5..771a368 100644
--- a/gcc/ira-int.h
+++ b/gcc/ira-int.h
@@ -1138,8 +1138,13 @@ static inline bool
ira_allocno_object_iter_cond (ira_allocno_object_iterator *i, ira_allocno_t a,
ira_object_t *o)
{
- *o = ALLOCNO_OBJECT (a, i->n);
- return i->n++ < ALLOCNO_NUM_OBJECTS (a);
+ int n = i->n++;
+ if (n < ALLOCNO_NUM_OBJECTS (a))
+ {
+ *o = ALLOCNO_OBJECT (a, n);
+ return true;
+ }
+ return false;
}
/* Loop over all objects associated with allocno A. In each
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