From 748bf121bbd41fb1a8e6758fd0059687757f7535 Mon Sep 17 00:00:00 2001 From: George Karpenkov Date: Mon, 21 Aug 2017 23:25:12 +0000 Subject: Moving libFuzzer from LLVM to compiler-rt. This change only removes libFuzzer tests and CMake machinery, the source copy temporarily remains at the old location. Differential Revision: https://reviews.llvm.org/D36980 llvm-svn: 311405 --- llvm/lib/Fuzzer/test/SimpleHashTest.cpp | 40 --------------------------------- 1 file changed, 40 deletions(-) delete mode 100644 llvm/lib/Fuzzer/test/SimpleHashTest.cpp (limited to 'llvm/lib/Fuzzer/test/SimpleHashTest.cpp') diff --git a/llvm/lib/Fuzzer/test/SimpleHashTest.cpp b/llvm/lib/Fuzzer/test/SimpleHashTest.cpp deleted file mode 100644 index 99e96cb25dc..00000000000 --- a/llvm/lib/Fuzzer/test/SimpleHashTest.cpp +++ /dev/null @@ -1,40 +0,0 @@ -// This file is distributed under the University of Illinois Open Source -// License. See LICENSE.TXT for details. - -// This test computes a checksum of the data (all but the last 4 bytes), -// and then compares the last 4 bytes with the computed value. -// A fuzzer with cmp traces is expected to defeat this check. -#include -#include -#include -#include - -// A modified jenkins_one_at_a_time_hash initialized by non-zero, -// so that simple_hash(0) != 0. See also -// https://en.wikipedia.org/wiki/Jenkins_hash_function -static uint32_t simple_hash(const uint8_t *Data, size_t Size) { - uint32_t Hash = 0x12039854; - for (uint32_t i = 0; i < Size; i++) { - Hash += Data[i]; - Hash += (Hash << 10); - Hash ^= (Hash >> 6); - } - Hash += (Hash << 3); - Hash ^= (Hash >> 11); - Hash += (Hash << 15); - return Hash; -} - -extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) { - if (Size < 14) - return 0; - - uint32_t Hash = simple_hash(&Data[0], Size - 4); - uint32_t Want = reinterpret_cast(&Data[Size - 4])[0]; - if (Hash != Want) - return 0; - fprintf(stderr, "BINGO; simple_hash defeated: %x == %x\n", (unsigned int)Hash, - (unsigned int)Want); - exit(1); - return 0; -} -- cgit v1.2.3