| // RUN: %clang_cc1 %s -verify -Wunused -Wunused-parameter -fsyntax-only |
| int printf(const char *, ...); |
| + (void) hello { printf("Hello, World!\n"); } |
| @interface NSString : NSObject |
| @"pointless example call for test purposes".length; // expected-warning {{property access result unused - getters should not have side effects}} |
| - (int)meth: (int)x: (int)y: (int)z ; |
| (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 |