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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
// Simple test for a fuzzer. The fuzzer must find the interesting switch value.
#include <cstddef>
#include <cstdint>
#include <cstdio>
#include <cstdlib>
#include <cstring>
static volatile int Sink;
template<class T>
bool Switch(const uint8_t *Data, size_t Size) {
T X;
if (Size < sizeof(X)) return false;
memcpy(&X, Data, sizeof(X));
switch (X) {
case 1: Sink = __LINE__; break;
case 101: Sink = __LINE__; break;
case 1001: Sink = __LINE__; break;
case 10001: Sink = __LINE__; break;
case 100001: Sink = __LINE__; break;
case 1000001: Sink = __LINE__; break;
case 10000001: Sink = __LINE__; break;
case 100000001: return true;
}
return false;
}
bool ShortSwitch(const uint8_t *Data, size_t Size) {
short X;
if (Size < sizeof(short)) return false;
memcpy(&X, Data, sizeof(short));
switch(X) {
case 42: Sink = __LINE__; break;
case 402: Sink = __LINE__; break;
case 4002: Sink = __LINE__; break;
case 5002: Sink = __LINE__; break;
case 7002: Sink = __LINE__; break;
case 9002: Sink = __LINE__; break;
case 14002: Sink = __LINE__; break;
case 21402: return true;
}
return false;
}
extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
if (Size >= 4 && Switch<int>(Data, Size) &&
Size >= 12 && Switch<uint64_t>(Data + 4, Size - 4) &&
Size >= 14 && ShortSwitch(Data + 12, 2)
) {
fprintf(stderr, "BINGO; Found the target, exiting\n");
exit(1);
}
return 0;
}
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