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[Qemu-devel] [PULL] Memory core integer overflow fix


From: Avi Kivity
Subject: [Qemu-devel] [PULL] Memory core integer overflow fix
Date: Wed, 14 Sep 2011 15:48:31 +0300
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:6.0) Gecko/20110816 Thunderbird/6.0

Please pull from

  git://github.com/avikivity/qemu.git memory/core

to receive a core fix for an integer overflow problem hitting ppc:

David Gibson (1):
      Fix subtle integer overflow bug in memory API

 memory.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/memory.c b/memory.c
index 57f0fa4..101b67c 100644
--- a/memory.c
+++ b/memory.c
@@ -55,8 +55,8 @@ static AddrRange addrrange_shift(AddrRange range, int64_t delta)

 static bool addrrange_intersects(AddrRange r1, AddrRange r2)
 {
-    return (r1.start >= r2.start && r1.start < r2.start + r2.size)
-        || (r2.start >= r1.start && r2.start < r1.start + r1.size);
+    return (r1.start >= r2.start && (r1.start - r2.start) < r2.size)
+        || (r2.start >= r1.start && (r2.start - r1.start) < r1.size);
 }

 static AddrRange addrrange_intersection(AddrRange r1, AddrRange r2)

--
error compiling committee.c: too many arguments to function




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