Add an option to control the enum switch warning.

tools/qfcc/doc/man/qfcc.1

@@ -314,6 +314,13 @@ Emit a warning when potentially ambiguous logic is used without parentheses.
 .B redeclared
 Emit a warning when a local variable is redeclared.
 .TP
+.B switch
+Emit a warning when an enum value is not handled in a switch statement that
+tests an enum.
+Using a default label will cause all otherwise unhandled enum values to be
+handled (for good or evil).
+.TP
+.TP
 .B traditional
 Emit a warning when code that should be an error is allowed by traditional
 \fBqcc\fP.

tools/qfcc/include/options.h

@@ -61,6 +61,7 @@ typedef struct {
 	qboolean	initializer;		// Warn on excessive initializer elements
 	qboolean	unimplemented;		// Warn on unimplemented class methods
 	qboolean	redeclared;			// Warn on redeclared local variables
+	qboolean	enum_switch;		// Warn on unhandled enum values in switch
 } warn_options_t;
 
 typedef struct {

tools/qfcc/source/options.c

@@ -232,6 +232,8 @@ warning_usage (void)
 "                            interface.\n"
 "    none                    Turn off all warnings.\n"
 "    [no-]precedence         Warn about potentially ambiguous logic.\n"
+"    [no-]switch             Warn about unhandled enum values in switch\n"
+"                            statements.\n"
 "    [no-]redeclared         Warn about redeclared local variables.\n"
 "    [no-]traditional        Warn about bad code that qcc allowed.\n"
 "    [no-]undef-function     Warn about calling a yet to be defined\n"
@@ -295,6 +297,7 @@ DecodeArgs (int argc, char **argv)
 	options.warnings.initializer = true;
 	options.warnings.unimplemented = true;
 	options.warnings.redeclared = true;
+	options.warnings.enum_switch = true;
 
 	options.single_cpp = true;
 	options.save_temps = false;
@@ -503,6 +506,7 @@ DecodeArgs (int argc, char **argv)
 							options.warnings.initializer = true;
 							options.warnings.unimplemented = true;
 							options.warnings.redeclared = true;
+							options.warnings.enum_switch = true;
 						} else if (!(strcasecmp (temp, "none"))) {
 							options.warnings.cow = false;
 							options.warnings.undefined_function = false;
@@ -517,6 +521,7 @@ DecodeArgs (int argc, char **argv)
 							options.warnings.initializer = false;
 							options.warnings.unimplemented = false;
 							options.warnings.redeclared = false;
+							options.warnings.enum_switch = false;
 						} else {
 							qboolean    flag = true;
 
@@ -542,6 +547,8 @@ DecodeArgs (int argc, char **argv)
 								options.warnings.precedence = flag;
 							} else if (!strcasecmp (temp, "redeclared")) {
 								options.warnings.redeclared = flag;
+							} else if (!strcasecmp (temp, "switch")) {
+								options.warnings.enum_switch = flag;
 							} else if (!strcasecmp (temp, "traditional")) {
 								options.warnings.traditional = flag;
 							} else if (!strcasecmp (temp, "undef-function")) {

tools/qfcc/source/switch.c

@@ -415,7 +415,7 @@ switch_expr (switch_block_t *switch_block, expr_t *break_label,
 	if (!default_label) {
 		default_label = &_default_label;
 		default_label->label = break_label;
-		if (is_enum (type))
+		if (options.warnings.enum_switch && is_enum (type))
 			check_enum_switch (switch_block);
 	}