diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 3cb7f400..1bead950 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -18,7 +18,7 @@ include_directories ("${PROJECT_SOURCE_DIR}/lib_ccx")
 include_directories ("${PROJECT_SOURCE_DIR}/gpacmp4/")
 include_directories ("${PROJECT_SOURCE_DIR}/libccx_common/")
 
-SET (CMAKE_C_FLAGS "-O3 -Wall -std=gnu99 -Wno-write-strings -D_FILE_OFFSET_BITS=64")
+SET (CMAKE_C_FLAGS "-O0 -Wall -g -std=gnu99 -Wno-write-strings -D_FILE_OFFSET_BITS=64")
 add_subdirectory (lib_ccx)
 
 AUX_SOURCE_DIRECTORY(${PROJECT_SOURCE_DIR} SOURCEFILE)
diff --git a/src/lib_ccx/CMakeLists.txt b/src/lib_ccx/CMakeLists.txt
index 571b6216..50956f4b 100644
--- a/src/lib_ccx/CMakeLists.txt
+++ b/src/lib_ccx/CMakeLists.txt
@@ -1,6 +1,6 @@
 cmake_policy(SET CMP0037 NEW)
 
-SET (CMAKE_C_FLAGS "-O3 -Wall -std=gnu99")
+SET (CMAKE_C_FLAGS "-O0 -Wall -g -std=gnu99")
 AUX_SOURCE_DIRECTORY("${PROJECT_SOURCE_DIR}/lib_ccx/" SOURCEFILE)
 AUX_SOURCE_DIRECTORY("${PROJECT_SOURCE_DIR}/gpacmp4/" SOURCEFILE)
 #AUX_SOURCE_DIRECTORY("${PROJECT_SOURCE_DIR}/libpng/" SOURCEFILE)
diff --git a/src/lib_ccx/ccx_common_option.h b/src/lib_ccx/ccx_common_option.h
index c7025041..a55773ce 100644
--- a/src/lib_ccx/ccx_common_option.h
+++ b/src/lib_ccx/ccx_common_option.h
@@ -87,7 +87,7 @@ struct ccx_s_options // Options from user parameters
 	int num_input_files; // How many?
 	enum ccx_stream_mode_enum auto_stream;
 	LLONG subs_delay; // ms to delay (or advance) subs
-	int *cc_to_stdout; // If this is set to 1, the stdout will be flushed when data was written to the screen during a process_608 call.
+	int cc_to_stdout; // If this is set to 1, the stdout will be flushed when data was written to the screen during a process_608 call.
 	// Output structures
 	struct ccx_s_write wbout1;
 	struct ccx_s_write wbout2;
diff --git a/src/lib_ccx/ccx_decoders_608.c b/src/lib_ccx/ccx_decoders_608.c
index 696d90b6..7b5f659c 100644
--- a/src/lib_ccx/ccx_decoders_608.c
+++ b/src/lib_ccx/ccx_decoders_608.c
@@ -1197,7 +1197,7 @@ int process608(const unsigned char *data, int length, ccx_decoder_608_context *c
 				context->current_visible_start_ms = get_visible_start();
 			}
 		}
-		if (wrote_to_screen && *context->cc_to_stdout)
+		if (wrote_to_screen && context->cc_to_stdout)
 			fflush (stdout);
 	} // for
 	return i;
diff --git a/src/lib_ccx/ccx_decoders_608.h b/src/lib_ccx/ccx_decoders_608.h
index 9e98f31e..1736a673 100644
--- a/src/lib_ccx/ccx_decoders_608.h
+++ b/src/lib_ccx/ccx_decoders_608.h
@@ -52,7 +52,7 @@ typedef struct ccx_decoder_608_context
 	enum ccx_encoding_type encoding;
 
 	int *halt; // Can be used to halt the feeding of caption data. Set to 1 if screens_to_progress != -1 && screenfuls_counter >= screens_to_process
-	int *cc_to_stdout; // If this is set to 1, the stdout will be flushed when data was written to the screen during a process_608 call.
+	int cc_to_stdout; // If this is set to 1, the stdout will be flushed when data was written to the screen during a process_608 call.
 } ccx_decoder_608_context;
 
 extern unsigned char *enc_buffer;
@@ -146,4 +146,4 @@ unsigned char *debug_608toASC(unsigned char *ccdata, int channel);
 LLONG get_visible_end(void);
 
 #define __608_H__
-#endif
\ No newline at end of file
+#endif