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diff --git a/include/ossfuzz.h b/include/ossfuzz.h
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+/*
+ * *****************************************************************************
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ *
+ * Copyright (c) 2018-2024 Gavin D. Howard and contributors.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * * Redistributions of source code must retain the above copyright notice, this
+ *   list of conditions and the following disclaimer.
+ *
+ * * Redistributions in binary form must reproduce the above copyright notice,
+ *   this list of conditions and the following disclaimer in the documentation
+ *   and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ * *****************************************************************************
+ *
+ * Declarations for the OSS-Fuzz build of bc and dc.
+ *
+ */
+
+#include <stdint.h>
+#include <stdlib.h>
+
+#ifndef BC_OSSFUZZ_H
+#define BC_OSSFUZZ_H
+
+/// The number of args in fuzzer arguments, including the NULL terminator.
+extern const size_t bc_fuzzer_args_len;
+
+/// The standard arguments for the bc fuzzer with the -c argument.
+extern const char* bc_fuzzer_args_c[];
+
+/// The standard arguments for the bc fuzzer with the -C argument.
+extern const char* bc_fuzzer_args_C[];
+
+/// The standard arguments for the dc fuzzer with the -c argument.
+extern const char* dc_fuzzer_args_c[];
+
+/// The standard arguments for the dc fuzzer with the -C argument.
+extern const char* dc_fuzzer_args_C[];
+
+/// The data pointer.
+extern uint8_t* bc_fuzzer_data;
+
+/**
+ * The function that the fuzzer runs.
+ * @param Data  The data.
+ * @param Size  The number of bytes in @a Data.
+ * @return      0 on success, -1 on error.
+ * @pre         @a Data must not be equal to NULL if @a Size > 0.
+ */
+int
+LLVMFuzzerTestOneInput(const uint8_t* Data, size_t Size);
+
+/**
+ * The initialization function for the fuzzer.
+ * @param argc  A pointer to the argument count.
+ * @param argv  A pointer to the argument list.
+ * @return      0 on success, -1 on error.
+ */
+int
+LLVMFuzzerInitialize(int* argc, char*** argv);
+
+#endif // BC_OSSFUZZ_H