Fix typeid comparison bug; Add extra messages for pointer address errors

examples/demo/demo.odin

@@ -1350,7 +1350,17 @@ soa_struct_layout :: proc() {
 }
 
 main :: proc() {
-	when true {
+	id: typeid;
+	id = typeid_of(int);
+
+	if id == bool {
+		fmt.println("HERE1");
+	}
+	fmt.println("HERE2");
+
+
+
+	when false {
 		extra_general_stuff();
 		union_type();
 		parametric_polymorphism();

src/check_expr.cpp

@@ -1645,7 +1645,17 @@ void check_unary_expr(CheckerContext *c, Operand *o, Token op, Ast *node) {
 				if (e != nullptr && (e->flags & EntityFlag_Param) != 0) {
 					error(op, "Cannot take the pointer address of '%s' which is a procedure parameter", str);
 				} else {
-					error(op, "Cannot take the pointer address of '%s'", str);
+					switch (o->mode) {
+					case Addressing_SoaVariable:
+						error(op, "Cannot take the pointer address of '%s' as it is an indirect index of an SOA struct", str);
+						break;
+					case Addressing_Constant:
+						error(op, "Cannot take the pointer address of '%s' which is a constant", str);
+						break;
+					default:
+						error(op, "Cannot take the pointer address of '%s'", str);
+						break;
+					}
 				}
 			}
 			o->mode = Addressing_Invalid;
@@ -1731,12 +1741,14 @@ void check_comparison(CheckerContext *c, Operand *x, Operand *y, TokenKind op) {
 
 	if (x->mode == Addressing_Type && is_type_typeid(y->type)) {
 		add_type_info_type(c, x->type);
+		add_type_info_type(c, y->type);
 		add_type_and_value(c->info, x->expr, Addressing_Value, y->type, exact_value_typeid(x->type));
 
 		x->mode = Addressing_Value;
 		x->type = t_untyped_bool;
 		return;
 	} else if (is_type_typeid(x->type) && y->mode == Addressing_Type) {
+		add_type_info_type(c, x->type);
 		add_type_info_type(c, y->type);
 		add_type_and_value(c->info, y->expr, Addressing_Value, x->type, exact_value_typeid(y->type));
 

src/checker.cpp

@@ -1036,6 +1036,8 @@ void add_type_and_value(CheckerInfo *i, Ast *expr, AddressingMode mode, Type *ty
 	expr->tav.type = type;
 	if (mode == Addressing_Constant || mode == Addressing_Invalid) {
 		expr->tav.value = value;
+	} else if (mode == Addressing_Value && is_type_typeid(type)) {
+		expr->tav.value = value;
 	}
 }