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Diffstat (limited to 'test/fuzzer/ShrinkControlFlowTest.cpp')
-rw-r--r-- | test/fuzzer/ShrinkControlFlowTest.cpp | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/test/fuzzer/ShrinkControlFlowTest.cpp b/test/fuzzer/ShrinkControlFlowTest.cpp new file mode 100644 index 000000000000..1957c1f90fc3 --- /dev/null +++ b/test/fuzzer/ShrinkControlFlowTest.cpp @@ -0,0 +1,31 @@ +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. + +// Test that we can find the minimal item in the corpus (3 bytes: "FUZ"). +#include <cstddef> +#include <cstdint> +#include <cstdio> +#include <cstdlib> +#include <cstring> + +static volatile int Sink; + +void Foo() { + Sink++; +} + +extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) { + int8_t Ids[256]; + memset(Ids, -1, sizeof(Ids)); + for (size_t i = 0; i < Size; i++) + if (Ids[Data[i]] == -1) + Ids[Data[i]] = i; + int F = Ids[(unsigned char)'F']; + int U = Ids[(unsigned char)'U']; + int Z = Ids[(unsigned char)'Z']; + if (F >= 0 && U > F && Z > U) { + Foo(); + } + return 0; +} + |