File: method-warn-unused-attribute.m

package info (click to toggle)
llvm-toolchain-19 1%3A19.1.7-3
  • links: PTS, VCS
  • area: main
  • in suites: forky, sid, trixie
  • size: 1,998,520 kB
  • sloc: cpp: 6,951,680; ansic: 1,486,157; asm: 913,598; python: 232,024; f90: 80,126; objc: 75,281; lisp: 37,276; pascal: 16,990; sh: 10,009; ml: 5,058; perl: 4,724; awk: 3,523; makefile: 3,167; javascript: 2,504; xml: 892; fortran: 664; cs: 573
file content (16 lines) | stat: -rw-r--r-- 660 bytes parent folder | download | duplicates (31) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
 
// RUN: %clang_cc1  -fsyntax-only -Wunused-value -verify %s

@interface INTF
- (id) foo __attribute__((warn_unused_result)); 
- (void) garf __attribute__((warn_unused_result)); // expected-warning {{attribute 'warn_unused_result' cannot be applied to Objective-C method without return value}}
- (int) fee __attribute__((warn_unused_result));
+ (int) c __attribute__((warn_unused_result));
@end

void foo(INTF *a) {
  [a garf];
  [a fee]; // expected-warning {{ignoring return value of function declared with 'warn_unused_result' attribute}}
  [INTF c]; // expected-warning {{ignoring return value of function declared with 'warn_unused_result' attribute}}
}