From: Chris Lattner <sabre@nondot.org>
Date: Sun, 26 Oct 2008 19:20:47 +0000 (+0000)
Subject: fix PR2953, an off-by-one error handling formatted i/o.
X-Git-Url: http://plrg.eecs.uci.edu/git/?a=commitdiff_plain;h=f61ca1eeda9cf2427047d83febe6fac1fbb1e84e;p=oota-llvm.git

fix PR2953, an off-by-one error handling formatted i/o.
Thanks to Török Edwin for the awesome reduced testcase.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58199 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Support/raw_ostream.cpp b/lib/Support/raw_ostream.cpp
index a4c293660b0..8c704cb4714 100644
--- a/lib/Support/raw_ostream.cpp
+++ b/lib/Support/raw_ostream.cpp
@@ -175,7 +175,7 @@ raw_ostream &raw_ostream::operator<<(const format_object_base &Fmt) {
     unsigned BytesUsed = Fmt.print(&V[0], NextBufferSize);
     
     // If BytesUsed fit into the vector, we win.
-    if (BytesUsed < NextBufferSize)
+    if (BytesUsed <= NextBufferSize)
       return write(&V[0], BytesUsed);
     
     // Otherwise, try again with a new size.