[libFuzzer] Fix index error in SearchMemory() implementation for Windows.

Differential Revision: https://reviews.llvm.org/D27731

llvm-svn: 289966

diff --git a/llvm/lib/Fuzzer/FuzzerUtilWindows.cpp b/llvm/lib/Fuzzer/FuzzerUtilWindows.cpp
index fea09a6..64adb7c 100644 (file)
--- a/llvm/lib/Fuzzer/FuzzerUtilWindows.cpp
+++ b/llvm/lib/Fuzzer/FuzzerUtilWindows.cpp
@@ -168,7 +168,7 @@ const void *SearchMemory(const void *Data, size_t DataLen, const void *Patt,
   if (PattLen == 1)
     return memchr(Data, *Cpatt, DataLen);
 
-  const char *End = Cdata + DataLen - PattLen;
+  const char *End = Cdata + DataLen - PattLen + 1;
 
   for (const char *It = Cdata; It < End; ++It)
     if (It[0] == Cpatt[0] && memcmp(It, Cpatt, PattLen) == 0)