diff options
Diffstat (limited to 'test/fuzzer/StrncmpOOBTest.cpp')
-rw-r--r-- | test/fuzzer/StrncmpOOBTest.cpp | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/test/fuzzer/StrncmpOOBTest.cpp b/test/fuzzer/StrncmpOOBTest.cpp new file mode 100644 index 000000000000..4ed71d9d021d --- /dev/null +++ b/test/fuzzer/StrncmpOOBTest.cpp @@ -0,0 +1,21 @@ +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. + +// Test that libFuzzer itself does not read out of bounds. +#include <assert.h> +#include <cstddef> +#include <cstdint> +#include <cstdlib> +#include <cstring> +#include <iostream> + +static volatile int Sink; + +extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) { + if (Size < 5) return 0; + const char *Ch = reinterpret_cast<const char *>(Data); + if (Ch[Size - 3] == 'a') + Sink = strncmp(Ch + Size - 3, "abcdefg", 6); + return 0; +} + |