oss-fuzz: Add raw fuzzer

oss-fuzz/Makefile

@@ -8,12 +8,16 @@
 CPPCHECK_DIR=..
 INCLUDE_DIR=-I ${CPPCHECK_DIR}/lib -I ${CPPCHECK_DIR}/externals/picojson -I ${CPPCHECK_DIR}/externals/simplecpp -I ${CPPCHECK_DIR}/externals/tinyxml2 -I ${CPPCHECK_DIR}/externals
 SRC_FILES=main.cpp type2.cpp ${CPPCHECK_DIR}/externals/simplecpp/simplecpp.cpp ${CPPCHECK_DIR}/externals/tinyxml2/tinyxml2.cpp ${CPPCHECK_DIR}/lib/*.cpp
+RAW_FUZZER_SRC_FILES=raw_fuzzer.cpp ${CPPCHECK_DIR}/externals/simplecpp/simplecpp.cpp ${CPPCHECK_DIR}/externals/tinyxml2/tinyxml2.cpp ${CPPCHECK_DIR}/lib/*.cpp
 
-all:	oss-fuzz-client	translate
+all:	oss-fuzz-client	translate raw_fuzzer
 
 oss-fuzz-client:	main.cpp	type2.cpp	type2.h
 	${CXX} -std=c++11 -g ${CXXFLAGS} -o oss-fuzz-client ${INCLUDE_DIR} ${SRC_FILES} ${LIB_FUZZING_ENGINE}
 
+raw_fuzzer:	raw_fuzzer.cpp
+	${CXX} -std=c++11 -g ${CXXFLAGS} -o raw_fuzzer ${INCLUDE_DIR} ${RAW_FUZZER_SRC_FILES} ${LIB_FUZZING_ENGINE}
+
 translate:	translate.cpp	type2.cpp	type2.h
 	${CXX} -std=c++11 -g ${CXXFLAGS} -o translate type2.cpp translate.cpp
 

oss-fuzz/raw_fuzzer.cpp

@@ -0,0 +1,48 @@
+/*
+ * Cppcheck - A tool for static C/C++ code analysis
+ * Copyright (C) 2007-2023 Cppcheck team.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "cppcheck.h"
+
+enum class Color;
+
+class DummyErrorLogger : public ErrorLogger {
+public:
+    void reportOut(const std::string& /*outmsg*/, Color /*c*/) override {}
+    void reportErr(const ErrorMessage& /*msg*/) override {}
+    void reportProgress(const std::string& /*filename*/,
+                        const char /*stage*/[],
+                        const std::size_t /*value*/) override {} // FN
+};
+
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t dataSize);
+
+int LLVMFuzzerTestOneInput(const uint8_t *data, size_t dataSize)
+{
+    if (dataSize < 10000) {
+        std::string code(reinterpret_cast<const char*>(data), dataSize);
+
+        DummyErrorLogger errorLogger;
+        CppCheck cppcheck(errorLogger, false, nullptr);
+        cppcheck.settings().addEnabled("all");
+        cppcheck.settings().certainty.setEnabled(Certainty::inconclusive, true);
+        cppcheck.check("test.cpp", code);
+    }
+    return 0;
+}
+
+