1 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
2 // See https://llvm.org/LICENSE.txt for license information.
3 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
4 
5 // Test that we can find the minimal item in the corpus (3 bytes: "FUZ").
6 #include <cstddef>
7 #include <cstdint>
8 #include <cstdio>
9 #include <cstdlib>
10 #include <cstring>
11 
12 static volatile int Sink;
13 
Foo()14 void Foo() {
15   Sink++;
16 }
17 
LLVMFuzzerTestOneInput(const uint8_t * Data,size_t Size)18 extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
19   int8_t Ids[256];
20   memset(Ids, -1, sizeof(Ids));
21   for (size_t i = 0; i < Size; i++)
22     if (Ids[Data[i]] == -1)
23       Ids[Data[i]] = i;
24   int F = Ids[(unsigned char)'F'];
25   int U = Ids[(unsigned char)'U'];
26   int Z = Ids[(unsigned char)'Z'];
27   if (F >= 0 && U > F && Z > U) {
28     Foo();
29   }
30   return 0;
31 }
32 
33