Sync fuzzing changes back to master (#440)

Author: weinrank

CMakeLists.txt

@@ -259,8 +259,9 @@ elseif (CMAKE_C_COMPILER_ID MATCHES "Clang" OR CMAKE_C_COMPILER_ID MATCHES "Appl
 	endif ()
 
 	if (sctp_build_fuzzer)
+		set(CMAKE_BUILD_TYPE "DEBUG")
 		add_definitions(-DFUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION)
-		set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fsanitize=fuzzer-no-link")
+		set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -O1 -fsanitize=fuzzer-no-link")
 	endif ()
 endif ()