1*2946cd70SChandler Carruth // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 2*2946cd70SChandler Carruth // See https://llvm.org/LICENSE.txt for license information. 3*2946cd70SChandler Carruth // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 4320e9af3SRoman Lebedev 5320e9af3SRoman Lebedev // Test for implicit-integer-sign-change. 6320e9af3SRoman Lebedev #include <assert.h> 7320e9af3SRoman Lebedev #include <climits> 8320e9af3SRoman Lebedev #include <cstddef> 9320e9af3SRoman Lebedev #include <cstdint> 10320e9af3SRoman Lebedev #include <cstdlib> 11320e9af3SRoman Lebedev #include <iostream> 12320e9af3SRoman Lebedev 13a0457c02SRoman Lebedev static volatile uint32_t Sink; 14a0457c02SRoman Lebedev static volatile int32_t Storage = -1; 15320e9af3SRoman Lebedev LLVMFuzzerTestOneInput(const uint8_t * Data,size_t Size)16320e9af3SRoman Lebedevextern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) { 17320e9af3SRoman Lebedev assert(Data); 18320e9af3SRoman Lebedev if (Size > 0 && Data[0] == 'H') { 19320e9af3SRoman Lebedev Sink = 1; 20320e9af3SRoman Lebedev if (Size > 1 && Data[1] == 'i') { 21320e9af3SRoman Lebedev Sink = 2; 22320e9af3SRoman Lebedev if (Size > 2 && Data[2] == '!') { 23320e9af3SRoman Lebedev Sink = Storage; // 'sign change'. 24320e9af3SRoman Lebedev } 25320e9af3SRoman Lebedev } 26320e9af3SRoman Lebedev } 27320e9af3SRoman Lebedev return 0; 28320e9af3SRoman Lebedev } 29