blob: 1ecf32295eaed7f7213f218d4a03360e06b4f2b8 [file] [log] [blame]
// RUN: %clang_cc1 %s -verify -Wunused -Wunused-parameter -fsyntax-only
int printf(const char *, ...);
@interface Greeter
+ (void) hello;
@implementation Greeter
+ (void) hello { printf("Hello, World!\n"); }
int test1(void) {
[Greeter hello];
return 0;
@interface NSObject @end
@interface NSString : NSObject
- (int)length;
void test2() {
@"pointless example call for test purposes".length; // expected-warning {{property access result unused - getters should not be used for side effects}}
@interface foo
- (int)meth: (int)x: (int)y: (int)z ;
@implementation foo
- (int) meth: (int)x:
(int)y: // expected-warning{{unused}}
(int) __attribute__((unused))z { return x; }
// The next test shows how clang accepted attribute((unused)) on ObjC
// instance variables, which GCC does not.
#if __has_feature(attribute_objc_ivar_unused)
#define UNUSED_IVAR __attribute__((unused))
#error __attribute__((unused)) not supported on ivars
@interface TestUnusedIvar {
id y __attribute__((unused)); // no-warning
id x UNUSED_IVAR; // no-warning