Use same compiler flags as oss-fuzz (for ASAN)

tests/fuzz/CMakeLists.txt

@@ -20,8 +20,8 @@ if (NOT UA_BUILD_OSS_FUZZ)
         set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fsanitize=address")
         set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fsanitize=address")
     else()
-        set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fsanitize=address -fsanitize-coverage=trace-pc-guard")
-        set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fsanitize=address -fsanitize-coverage=trace-pc-guard")
+        set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -O1 -fno-omit-frame-pointer -gline-tables-only -DFUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION -fsanitize=address -fsanitize-address-use-after-scope -fsanitize-coverage=trace-pc-guard,trace-cmp")
+        set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -O1 -fno-omit-frame-pointer -gline-tables-only -DFUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION -fsanitize=address -fsanitize-address-use-after-scope -fsanitize-coverage=trace-pc-guard,trace-cmp")
     endif()
     set(LIBS Fuzzer)
     set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_RUNTIME_OUTPUT_DIRECTORY})