Add mechanism to disable temporary compiler warnings in a sequence of code.

m-serial-bin.h

@@ -30,6 +30,8 @@
 #include "m-core.h"
 #include "m-string.h"
 
+M_BEGIN_PROTECTED_CODE
+
 /* Internal service:
  * Write size_t in the stream in a compact form to reduce consumption
  * (and I/O bandwidth)
@@ -586,4 +588,6 @@ typedef m_serial_read_t m_serial_bin_read_t;
 #define M_OPL_m_serial_bin_read_t()                                                   \
   (INIT_WITH(m_serial_bin_read_init), CLEAR(m_serial_bin_read_clear), TYPE(m_serial_bin_read_t) )
 
+M_END_PROTECTED_CODE
+
 #endif