From cdf4f3055e964bb585f294cf77cb549ead82783f Mon Sep 17 00:00:00 2001 From: Dimitry Andric Date: Mon, 18 Dec 2017 20:11:54 +0000 Subject: Vendor import of compiler-rt trunk r321017: https://llvm.org/svn/llvm-project/compiler-rt/trunk@321017 --- test/fuzzer/SwapCmpTest.cpp | 35 +++++++++++++++++++++++++++++++++++ 1 file changed, 35 insertions(+) create mode 100644 test/fuzzer/SwapCmpTest.cpp (limited to 'test/fuzzer/SwapCmpTest.cpp') diff --git a/test/fuzzer/SwapCmpTest.cpp b/test/fuzzer/SwapCmpTest.cpp new file mode 100644 index 000000000000..bbfbefe6ab71 --- /dev/null +++ b/test/fuzzer/SwapCmpTest.cpp @@ -0,0 +1,35 @@ +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. + +// The fuzzer must find several constants with swapped bytes. +#include +#include +#include +#include + +extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) { + if (Size < 14) return 0; + uint64_t x = 0; + uint32_t y = 0; + uint16_t z = 0; + memcpy(&x, Data, sizeof(x)); + memcpy(&y, Data + Size / 2, sizeof(y)); + memcpy(&z, Data + Size - sizeof(z), sizeof(z)); + + x = __builtin_bswap64(x); + y = __builtin_bswap32(y); + z = __builtin_bswap16(z); + const bool k32bit = sizeof(void*) == 4; + + if ((k32bit || x == 0x46555A5A5A5A5546ULL) && + z == 0x4F4B && + y == 0x66757A7A && + true + ) { + if (Data[Size - 3] == 'z') { + fprintf(stderr, "BINGO; Found the target\n"); + exit(1); + } + } + return 0; +} -- cgit v1.2.3