File: objc-weak.mm

package info (click to toggle)
llvm-toolchain-9 1%3A9.0.1-16.1
  • links: PTS, VCS
  • area: main
  • in suites: bullseye
  • size: 882,388 kB
  • sloc: cpp: 4,167,636; ansic: 714,256; asm: 457,610; python: 155,927; objc: 65,094; sh: 42,856; lisp: 26,908; perl: 7,786; pascal: 7,722; makefile: 6,881; ml: 5,581; awk: 3,648; cs: 2,027; xml: 888; javascript: 381; ruby: 156
file content (28 lines) | stat: -rw-r--r-- 1,356 bytes parent folder | download | duplicates (23)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
// RUN: %clang_cc1 -fsyntax-only -fobjc-runtime-has-weak -fobjc-weak -fblocks -Wno-objc-root-class -std=c++98 -Wno-c++0x-extensions -verify %s

@interface AnObject
@property(weak) id value;
@end

__attribute__((objc_arc_weak_reference_unavailable))
@interface NOWEAK : AnObject // expected-note 2 {{class is declared here}}
@end

struct S {
  __weak id a; // expected-note {{because type 'S' has a member with __weak ownership}}
};

union U {
  __weak id a;
  S b;         // expected-error {{union member 'b' has a non-trivial copy constructor}}
};

void testCast(AnObject *o) {
  __weak id a = reinterpret_cast<__weak NOWEAK *>(o); // expected-error {{class is incompatible with __weak references}} \
                                                      // expected-error {{explicit ownership qualifier on cast result has no effect}} \
                                                      // expected-error {{assignment of a weak-unavailable object to a __weak object}}

  __weak id b = static_cast<__weak NOWEAK *>(o); // expected-error {{class is incompatible with __weak references}} \
                                                 // expected-error {{explicit ownership qualifier on cast result has no effect}} \
                                                 // expected-error {{assignment of a weak-unavailable object to a __weak object}}
}