From ff1f2107ecf63f2488f144ee0aa92c94c5ce8c24 Mon Sep 17 00:00:00 2001
From: Kostya Serebryany <kcc@google.com>
Date: Sat, 6 Aug 2016 21:23:29 +0000
Subject: [PATCH] [libFuzzer] don't print bogus error message

llvm-svn: 277940
---
 llvm/lib/Fuzzer/FuzzerLoop.cpp | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/llvm/lib/Fuzzer/FuzzerLoop.cpp b/llvm/lib/Fuzzer/FuzzerLoop.cpp
index 9c71562..ebcf892 100644
--- a/llvm/lib/Fuzzer/FuzzerLoop.cpp
+++ b/llvm/lib/Fuzzer/FuzzerLoop.cpp
@@ -129,8 +129,9 @@ class CoverageController {
       C->PcBufferPos = NewPcBufferPos;
     }
 
-    if (NewPcBufferPos >= PcBufferLen) {
-      Printf("ERROR: PC buffer overflow.\n");
+    if (PcBufferLen && NewPcBufferPos >= PcBufferLen) {
+      Printf("ERROR: PC buffer overflow\n");
+      _Exit(1);
     }
 
     return Res;
-- 
2.7.4