From: Kostya Serebryany <kcc@google.com>
Date: Fri, 31 Mar 2017 03:34:33 +0000 (+0000)
Subject: [libFuzzer] ensure that strncmp is not inlined in a test
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=15e73a64fce7ff97d8fcfed6a6920fbd15b3ff73;p=llvm

[libFuzzer] ensure that strncmp is not inlined in a test

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@299177 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Fuzzer/test/SingleStrncmpTest.cpp b/lib/Fuzzer/test/SingleStrncmpTest.cpp
index dbcc464b0a7..e5601da8632 100644
--- a/lib/Fuzzer/test/SingleStrncmpTest.cpp
+++ b/lib/Fuzzer/test/SingleStrncmpTest.cpp
@@ -9,7 +9,8 @@
 
 extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
   char *S = (char*)Data;
-  if (Size >= 6 && !strncmp(S, "qwerty", 6)) {
+  volatile auto Strncmp = &(strncmp);   // Make sure strncmp is not inlined.
+  if (Size >= 6 && !Strncmp(S, "qwerty", 6)) {
     fprintf(stderr, "BINGO\n");
     exit(1);
   }