fixed OSS-Fuzz builds and added CMake targets (#2577)

* fixed compilation of OSS-Fuzz clients

* added preliminary CMake target for fuzz-client - also added *_sanitized targets of dependencies (only available with Clang)

* added oss-fuzz build to Travis CI

.travis.yml

@@ -164,6 +164,8 @@ matrix:
         - ./testrunner TestSymbolDatabase
 # check .json files
         - find . -name '*.json' -not -path '*/\.*' | xargs jsonlint -s
+# build OSS-Fuzz clients
+        - make -j2 CXXFLAGS="-fsanitize=address" -C oss-fuzz
 
 # check if dmake needs to be rerun (this job may fail)
     - name: "rerun dmake?"

CMakeLists.txt

@@ -28,5 +28,6 @@ add_subdirectory(cli)   # Client application
 add_subdirectory(test)  # Tests
 ADD_SUBDIRECTORY(gui)   # Graphical application
 ADD_SUBDIRECTORY(tools/triage)   # Triage tool
+add_subdirectory(oss-fuzz) # OSS-Fuzz clients
 
 include(cmake/printInfo.cmake REQUIRED)

externals/simplecpp/CMakeLists.txt

@@ -2,5 +2,9 @@ file(GLOB hdrs "*.h")
 file(GLOB srcs "*.cpp")
 
 add_library(simplecpp_objs OBJECT ${srcs} ${hdrs})
+if (CMAKE_CXX_COMPILER_ID MATCHES "Clang")
+    add_library(simplecpp_objs_sanitized OBJECT ${srcs} ${hdrs})
+    target_compile_options(simplecpp_objs_sanitized PRIVATE -fsanitize=address)
+endif()
 
 

externals/tinyxml/CMakeLists.txt

@@ -2,5 +2,9 @@ file(GLOB hdrs "*.h")
 file(GLOB srcs "*.cpp")
 
 add_library(tinyxml_objs OBJECT ${srcs} ${hdrs})
+if (CMAKE_CXX_COMPILER_ID MATCHES "Clang")
+    add_library(tinyxml_objs_sanitized OBJECT ${srcs} ${hdrs})
+    target_compile_options(tinyxml_objs_sanitized PRIVATE -fsanitize=address)
+endif()
 
 

lib/CMakeLists.txt

@@ -37,4 +37,7 @@ else()
 endif()
 
 add_library(lib_objs OBJECT ${srcs_lib} ${hdrs})
-
+if (CMAKE_CXX_COMPILER_ID MATCHES "Clang")
+    add_library(lib_objs_sanitized OBJECT ${srcs_lib} ${hdrs})
+    target_compile_options(lib_objs_sanitized PRIVATE -fsanitize=address)
+endif()

oss-fuzz/CMakeLists.txt

@@ -0,0 +1,13 @@
+if (CMAKE_CXX_COMPILER_ID MATCHES "Clang")
+    add_executable(fuzz-client
+            main.cpp
+            type2.cpp)
+    target_include_directories(fuzz-client PRIVATE ${CMAKE_SOURCE_DIR}/lib ${CMAKE_SOURCE_DIR}/externals/simplecpp ${CMAKE_SOURCE_DIR}/externals/tinyxml ${CMAKE_SOURCE_DIR}/externals)
+    target_compile_options(fuzz-client PRIVATE -fsanitize=fuzzer)
+    target_link_libraries(fuzz-client PRIVATE simplecpp_objs_sanitized tinyxml_objs_sanitized lib_objs_sanitized)
+    target_link_options(fuzz-client PRIVATE -fsanitize=address -fsanitize=fuzzer)
+
+    add_executable(translate
+            translate.cpp
+            type2.cpp)
+endif()

oss-fuzz/main.cpp

@@ -19,11 +19,22 @@ public:
         cppcheck.check("test.cpp", code);
     }
 
-    void reportOut(const std::string &outmsg) { }
-    void reportErr(const ErrorLogger::ErrorMessage &msg) {}
+    void reportOut(const std::string &outmsg) OVERRIDE {
+		(void)outmsg;
+    }
+    void reportErr(const ErrorLogger::ErrorMessage &msg) OVERRIDE {
+		(void)msg;
+    }
     void reportProgress(const std::string& filename,
                         const char stage[],
-                        const unsigned int value) {}
+                        const std::size_t value) OVERRIDE {
+		(void)filename;
+		(void)stage;
+		(void)value;
+    }
+	void bughuntingReport(const std::string &str) OVERRIDE {
+		(void)str;
+    }
 };