forked from OSchip/llvm-project
50 lines
1.4 KiB
C++
50 lines
1.4 KiB
C++
// 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
|
|
|
|
// Find "FUZZME", the target has 3 different functions.
|
|
//
|
|
// This test, and the accompanying lit tests
|
|
// (dataflow.test, only-some-bytes.test) assume that the compiler
|
|
// instruments functions in their lexical order.
|
|
// This assumption is not guaranteed, but it is likely to hold.
|
|
// It allows to simplify the test quite a bit: in the lit tests
|
|
// LLVMFuzzerTestOneInput is "F0", Func1 is "F1", Func2 is "F2".
|
|
#include <assert.h>
|
|
#include <cstddef>
|
|
#include <cstdint>
|
|
#include <cstdlib>
|
|
#include <cstdio>
|
|
|
|
extern "C" bool Func1(const uint8_t *Data, size_t Size);
|
|
extern "C" bool Func2(const uint8_t *Data, size_t Size);
|
|
|
|
extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
|
|
if (Size >= 5
|
|
&& Data[0] == 'F'
|
|
&& Data[1] == 'U'
|
|
&& Data[2] == 'Z'
|
|
&& Data[3] == 'Z'
|
|
&& Func1(Data, Size)
|
|
&& Func2(Data, Size)) {
|
|
fprintf(stderr, "BINGO\n");
|
|
abort();
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
extern "C"
|
|
__attribute__((noinline))
|
|
bool Func1(const uint8_t *Data, size_t Size) {
|
|
// assumes Size >= 5, doesn't check it.
|
|
return Data[4] == 'M';
|
|
}
|
|
|
|
extern "C"
|
|
__attribute__((noinline))
|
|
bool Func2(const uint8_t *Data, size_t Size) {
|
|
return Size >= 6 && Data[5] == 'E';
|
|
}
|
|
|
|
|