[LibFuzzer] Fix ``FuzzerMutate.ShuffleBytes2`` unit test on OSX.

The ``FuzzerMutate.ShuffleBytes2`` unit test was failing on
OSX due to the implementation of ``std::random_shuffle()``
being different between libcxx and libstdc++.

@kcc has decided (see http://reviews.llvm.org/D21218) it is acceptable
for there to be different mutation behavior on different platforms so
this commit just adjusts the test to perform the minimum number of
iterations (that is a power of 2) to see all the mutations the unit test
is looking for.

Differential Revision: http://reviews.llvm.org/D21359

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@272743 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Fuzzer/test/FuzzerUnittest.cpp b/lib/Fuzzer/test/FuzzerUnittest.cpp
index 36d13a0346dcc014042f6d16fa3b541107fa473e..5b6251b6e96bd69ecb948bf2e853e9388bc94173 100644 (file)
--- a/lib/Fuzzer/test/FuzzerUnittest.cpp
+++ b/lib/Fuzzer/test/FuzzerUnittest.cpp
@@ -259,7 +259,7 @@ TEST(FuzzerMutate, ShuffleBytes1) {
   TestShuffleBytes(&MutationDispatcher::Mutate_ShuffleBytes, 1 << 16);
 }
 TEST(FuzzerMutate, ShuffleBytes2) {
-  TestShuffleBytes(&MutationDispatcher::Mutate, 1 << 19);
+  TestShuffleBytes(&MutationDispatcher::Mutate, 1 << 20);
 }
 
 void TestAddWordFromDictionary(Mutator M, int NumIter) {