Index: src/prelude/prelude.cf
===================================================================
--- src/prelude/prelude.cf	(revision ffd0ac2027c522815692b36504bb81a6e8384b48)
+++ src/prelude/prelude.cf	(revision 42be3c35d9c67c43de7a6a529fc24273a56311b9)
@@ -39,6 +39,4 @@
 // ------------------------------------------------------------
 
-_Bool			?++( _Bool & ),				?++( volatile _Bool & );
-_Bool			?--( _Bool & ),				?--( volatile _Bool & );
 signed short		?++( signed short & ),			?++( volatile signed short & );
 signed short		?--( signed short & ),			?--( volatile signed short & );
@@ -94,5 +92,4 @@
 // ------------------------------------------------------------
 
-_Bool			++?( _Bool & ),				--?( _Bool & );
 signed short	++?( signed short & ),			--?( signed short & );
 signed int		++?( signed int & ),			--?( signed int & );
@@ -125,5 +122,5 @@
 forall( ftype FT ) FT &		 *?( FT * );
 
-_Bool			+?( _Bool ),			-?( _Bool ),			~?( _Bool );
+_Bool			+?( _Bool ),			-?( _Bool );
 signed int		+?( signed int ),		-?( signed int ),		~?( signed int );
 unsigned int		+?( unsigned int ),		-?( unsigned int ),		~?( unsigned int );
@@ -157,5 +154,4 @@
 // ------------------------------------------------------------
 
-_Bool			?*?( _Bool, _Bool ),					?/?( _Bool, _Bool ),				?%?( _Bool, _Bool );
 signed int		?*?( signed int, signed int ),				?/?( signed int, signed int ),			?%?( signed int, signed int );
 unsigned int		?*?( unsigned int, unsigned int ),			?/?( unsigned int, unsigned int ),		?%?( unsigned int, unsigned int );
@@ -215,5 +211,4 @@
 // ------------------------------------------------------------
 
-_Bool			?<<?( _Bool, _Bool ),					?>>?( _Bool, _Bool );
 signed int		?<<?( signed int, signed int ),				?>>?( signed int, signed int );
 unsigned int		?<<?( unsigned int, unsigned int ),			?>>?( unsigned int, unsigned int );
@@ -467,5 +462,4 @@
 
 
-_Bool			?*=?( _Bool &, _Bool ),					?*=?( volatile _Bool &, _Bool );
 char			?*=?( char &, char ),					?*=?( volatile char &, char );
 char signed		?*=?( char signed &, char signed ),			?*=?( volatile char signed &, char signed );
@@ -534,5 +528,4 @@
 unsigned long long int	?-=?( unsigned long long int &, unsigned long long int ), ?-=?( volatile unsigned long long int &, unsigned long long int );
 
-_Bool			?<<=?( _Bool &, _Bool ),				?<<=?( volatile _Bool &, _Bool );
 char			?<<=?( char &, char ),					?<<=?( volatile char &, char );
 char signed		?<<=?( char signed &, char signed ),			?<<=?( volatile char signed &, char signed );
@@ -547,5 +540,4 @@
 unsigned long long int	?<<=?( unsigned long long int &, unsigned long long int ), ?<<=?( volatile unsigned long long int &, unsigned long long int );
 
-_Bool			?>>=?( _Bool &, _Bool ),				?>>=?( volatile _Bool &, _Bool );
 char			?>>=?( char &, char ),					?>>=?( volatile char &, char );
 char signed		?>>=?( char signed &, char signed ),			?>>=?( volatile char signed &, char signed );