forked from OSchip/llvm-project
41 lines
996 B
C++
41 lines
996 B
C++
// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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// Find ABCxxFxUxZxxx... (2048+ bytes, 'x' is any byte)
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#include <assert.h>
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#include <cstddef>
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#include <cstdint>
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#include <cstdlib>
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#include <cstring>
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#include <cstdio>
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const size_t N = 2048;
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typedef const uint8_t *IN;
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static volatile int one = 1;
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extern "C" {
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__attribute__((noinline)) void bad() {
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fprintf(stderr, "BINGO\n");
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if (one)
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abort();
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}
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__attribute__((noinline)) void f0(IN in) {
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uint32_t x = in[5] + 251 * in[7] + 251 * 251 * in[9];
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if (x == 'F' + 251 * 'U' + 251 * 251 * 'Z')
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bad();
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}
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__attribute__((noinline)) void fC(IN in) { if (in[2] == 'C') f0(in); }
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__attribute__((noinline)) void fB(IN in) { if (in[1] == 'B') fC(in); }
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__attribute__((noinline)) void fA(IN in) { if (in[0] == 'A') fB(in); }
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} // extern "C"
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extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
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if (Size < N) return 0;
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fA((IN)Data);
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return 0;
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}
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