| // RUN: %clang_cc1 -triple x86_64-apple-macos11 -fsyntax-only -fobjc-arc -fblocks -verify -Wunused-but-set-variable -Wno-objc-root-class %s |
| |
| id getFoo(void); |
| |
| void test() { |
| // no diagnostics for objects with precise lifetime semantics. |
| __attribute__((objc_precise_lifetime)) id x; |
| x = getFoo(); |
| |
| id x2; // expected-warning {{variable 'x2' set but not used}} |
| x2 = getFoo(); |
| |
| do { |
| __attribute__((objc_precise_lifetime)) id y; |
| y = getFoo(); |
| |
| id y2; // expected-warning {{variable 'y2' set but not used}} |
| y2 = getFoo(); |
| } while(0); |
| |
| x = ((void *)0); |
| } |