5317f2e4c9
Summary: Disables certain CMP optimizations to improve fuzzing signal under -O1 and -O2. Switches all fuzzer tests to -O2 except for a few leak tests where the leak is optimized out under -O2. Reviewers: kcc, vitalybuka Reviewed By: vitalybuka Subscribers: cfe-commits, llvm-commits Differential Revision: https://reviews.llvm.org/D44798 llvm-svn: 328384
36 lines
898 B
C++
36 lines
898 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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// The fuzzer must find several constants with swapped bytes.
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#include <cstdint>
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#include <cstdio>
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#include <cstdlib>
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#include <cstring>
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extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
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if (Size < 14) return 0;
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uint64_t x = 0;
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uint32_t y = 0;
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uint32_t z = 0;
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memcpy(&x, Data, sizeof(x));
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memcpy(&y, Data + Size / 2, sizeof(y));
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memcpy(&z, Data + Size - sizeof(z), sizeof(z));
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x = __builtin_bswap64(x);
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y = __builtin_bswap32(y);
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z = __builtin_bswap32(z);
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const bool k32bit = sizeof(void*) == 4;
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if ((k32bit || x == 0x46555A5A5A5A5546ULL) &&
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z == 0x4F4B &&
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y == 0x66757A7A &&
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true
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) {
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if (Data[Size - 5] == 'z') {
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fprintf(stderr, "BINGO; Found the target\n");
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exit(1);
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}
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}
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return 0;
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}
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