* Fix various warnings with GCC and clang

7 files changed, 30 insertions, 19 deletions

diff --git a/Makefile b/Makefile
index 0af4d137..31bd625b 100644
--- a/Makefile
+++ b/Makefile
@@ -268,7 +268,7 @@ ifneq (,$(findstring "$(PLATFORM)", "linux" "gnu_kfreebsd" "kfreebsd-gnu"))
   endif
 
   BASE_CFLAGS = -Wall -fno-strict-aliasing -Wimplicit -Wstrict-prototypes \
-    -Wno-self-assign -pipe -DUSE_ICON
+    -pipe -DUSE_ICON
   CLIENT_CFLAGS += $(SDL_CFLAGS)
 
   OPTIMIZEVM = -O3 -funroll-loops -fomit-frame-pointer
@@ -879,6 +879,10 @@ else
   RENDERER_LIBS += -ljpeg
 endif
 
+ifeq ("$(CC)", $(findstring "$(CC)", "clang" "clang++"))
+  BASE_CFLAGS += -Qunused-arguments
+endif
+
 ifdef DEFAULT_BASEDIR
   BASE_CFLAGS += -DDEFAULT_BASEDIR=\\\"$(DEFAULT_BASEDIR)\\\"
 endif
diff --git a/src/client/libmumblelink.c b/src/client/libmumblelink.c
index 25ca6786..48a18065 100644
--- a/src/client/libmumblelink.c
+++ b/src/client/libmumblelink.c
@@ -116,7 +116,7 @@ int mumble_link(const char* name)
 	close(shmfd);
 #endif
 	memset(lm, 0, sizeof(LinkedMem));
-	mbstowcs(lm->name, name, sizeof(lm->name));
+	mbstowcs(lm->name, name, sizeof(lm->name) / sizeof(wchar_t));
 
 	return 0;
 }
diff --git a/src/qcommon/common.c b/src/qcommon/common.c
index be91b245..c2d5d353 100644
--- a/src/qcommon/common.c
+++ b/src/qcommon/common.c
@@ -2325,10 +2325,7 @@ A way to force a bus error for development reasons
 =================
 */
 static void Com_Crash_f( void ) {
-#pragma clang diagnostic push
-#pragma clang diagnostic ignored "-Wnull-dereference"
-	* ( int * ) 0 = 0x12345678;
-#pragma clang diagnostic pop
+	* ( volatile int * ) 0 = 0x12345678;
 }
 
 /*
diff --git a/src/qcommon/q_shared.c b/src/qcommon/q_shared.c
index 00473dbf..68be72ab 100644
--- a/src/qcommon/q_shared.c
+++ b/src/qcommon/q_shared.c
@@ -707,11 +707,12 @@ int Q_isalpha( int c )
 qboolean Q_isanumber( const char *s )
 {
 	char *p;
+	double UNUSED_VAR d;
 
 	if( *s == '\0' )
 		return qfalse;
 
-	strtod( s, &p );
+	d = strtod( s, &p );
 
 	return *p == '\0';
 }
diff --git a/src/qcommon/q_shared.h b/src/qcommon/q_shared.h
index e007ae24..87750692 100644
--- a/src/qcommon/q_shared.h
+++ b/src/qcommon/q_shared.h
@@ -83,6 +83,12 @@ Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 #endif
 #endif
 
+#ifdef __GNUC__
+#define UNUSED_VAR __attribute__((unused))
+#else
+#define UNUSED_VAR
+#endif
+
 #if (defined _MSC_VER)
 #define Q_EXPORT __declspec(dllexport)
 #elif (defined __SUNPRO_C)
diff --git a/src/renderer/tr_bsp.c b/src/renderer/tr_bsp.c
index 4a7c0312..3ca40f08 100644
--- a/src/renderer/tr_bsp.c
+++ b/src/renderer/tr_bsp.c
@@ -273,11 +273,11 @@ static shader_t *ShaderForShaderNum( int shaderNum, int lightmapNum ) {
 	shader_t	*shader;
 	dshader_t	*dsh;
 
-	shaderNum = LittleLong( shaderNum );
-	if ( shaderNum < 0 || shaderNum >= s_worldData.numShaders ) {
-		ri.Error( ERR_DROP, "ShaderForShaderNum: bad num %i", shaderNum );
+	int _shaderNum = LittleLong( shaderNum );
+	if ( _shaderNum < 0 || _shaderNum >= s_worldData.numShaders ) {
+		ri.Error( ERR_DROP, "ShaderForShaderNum: bad num %i", _shaderNum );
 	}
-	dsh = &s_worldData.shaders[ shaderNum ];
+	dsh = &s_worldData.shaders[ _shaderNum ];
 
 	if ( r_vertexLight->integer || glConfig.hardwareType == GLHW_PERMEDIA2 ) {
 		lightmapNum = LIGHTMAP_BY_VERTEX;
diff --git a/src/sys/con_tty.c b/src/sys/con_tty.c
index 20afab4c..0d8da734 100644
--- a/src/sys/con_tty.c
+++ b/src/sys/con_tty.c
@@ -90,13 +90,14 @@ send "\b \b"
 static void CON_Back( void )
 {
 	char key;
+	size_t UNUSED_VAR size;
 
 	key = '\b';
-	write(STDOUT_FILENO, &key, 1);
+	size = write(STDOUT_FILENO, &key, 1);
 	key = ' ';
-	write(STDOUT_FILENO, &key, 1);
+	size = write(STDOUT_FILENO, &key, 1);
 	key = '\b';
-	write(STDOUT_FILENO, &key, 1);
+	size = write(STDOUT_FILENO, &key, 1);
 }
 
 /*
@@ -147,12 +148,13 @@ static void CON_Show( void )
 		ttycon_hide--;
 		if (ttycon_hide == 0)
 		{
-			write(STDOUT_FILENO, "]", 1);
+			size_t UNUSED_VAR size;
+			size = write(STDOUT_FILENO, "]", 1);
 			if (TTY_con.cursor)
 			{
 				for (i=0; i<TTY_con.cursor; i++)
 				{
-					write(STDOUT_FILENO, TTY_con.buffer+i, 1);
+					size = write(STDOUT_FILENO, TTY_con.buffer+i, 1);
 				}
 			}
 		}
@@ -329,6 +331,7 @@ char *CON_Input( void )
 	int avail;
 	char key;
 	field_t *history;
+	size_t UNUSED_VAR size;
 
 	if(ttycon_on)
 	{
@@ -358,8 +361,8 @@ char *CON_Input( void )
 					Q_strncpyz(text, TTY_con.buffer, sizeof(text));
 					Field_Clear(&TTY_con);
 					key = '\n';
-					write(STDOUT_FILENO, &key, 1);
-					write(STDOUT_FILENO, "]", 1);
+					size = write(STDOUT_FILENO, &key, 1);
+					size = write(STDOUT_FILENO, "]", 1);
 					return text;
 				}
 				if (key == '\t')
@@ -423,7 +426,7 @@ char *CON_Input( void )
 			TTY_con.buffer[TTY_con.cursor] = key;
 			TTY_con.cursor++;
 			// print the current line (this is differential)
-			write(STDOUT_FILENO, &key, 1);
+			size = write(STDOUT_FILENO, &key, 1);
 		}
 
 		return NULL;