Richard Smith | 6ee326a | 2012-04-10 01:32:12 +0000 | [diff] [blame] | 1 | // RUN: %clang_cc1 -fsyntax-only -verify -std=c++11 %s |
| 2 | |
| 3 | @interface X {} |
| 4 | + (X*) alloc; |
| 5 | - (X*) init; |
| 6 | - (int) getSize; |
| 7 | - (void) setSize: (int) size; |
| 8 | - (X*) getSelf; |
| 9 | @end |
| 10 | |
| 11 | void f(X *noreturn) { |
| 12 | // An array size which is computed by a message send is OK. |
| 13 | int a[ [noreturn getSize] ]; |
| 14 | |
| 15 | // ... but is interpreted as an attribute where possible. |
| 16 | int b[ [noreturn] ]; // expected-warning {{'noreturn' only applies to function types}} |
| 17 | |
| 18 | int c[ [noreturn getSize] + 1 ]; |
| 19 | |
| 20 | // An array size which is computed by a lambda is not OK. |
| 21 | int d[ [noreturn] { return 3; } () ]; // expected-error {{expected ']'}} expected-warning {{'noreturn' only applies}} |
| 22 | |
| 23 | // A message send which contains a message send is OK. |
| 24 | [ [ X alloc ] init ]; |
| 25 | [ [ int(), noreturn getSelf ] getSize ]; // expected-warning {{unused}} |
| 26 | |
| 27 | // A message send which contains a lambda is OK. |
| 28 | [ [noreturn] { return noreturn; } () setSize: 4 ]; |
| 29 | [ [bitand] { return noreturn; } () setSize: 5 ]; |
| 30 | [[[[] { return [ X alloc ]; } () init] getSelf] getSize]; |
| 31 | |
| 32 | // An attribute is OK. |
| 33 | [[]]; |
| 34 | [[int(), noreturn]]; |
| 35 | [[class, test(foo 'x' bar),,,]]; |
Richard Smith | c56298d | 2012-04-10 03:25:07 +0000 | [diff] [blame] | 36 | [[bitand, noreturn]]; |
Richard Smith | 6ce48a7 | 2012-04-11 04:01:28 +0000 | [diff] [blame^] | 37 | |
| 38 | [[noreturn]]int(e)(); |
| 39 | |
| 40 | // A function taking a noreturn function. |
| 41 | int(f)([[noreturn]] int()); |
| 42 | f(e); |
| 43 | |
| 44 | // Variables initialized by a message send. |
| 45 | int(g)([[noreturn getSelf] getSize]); |
| 46 | int(h)([[noreturn]{return noreturn;}() getSize]); |
| 47 | |
| 48 | int i = g + h; |
Richard Smith | 6ee326a | 2012-04-10 01:32:12 +0000 | [diff] [blame] | 49 | } |
| 50 | |
| 51 | template<typename...Ts> void f(Ts ...x) { |
| 52 | [[test::foo(bar, baz)...]]; |
| 53 | [[used(x)...]]; |
| 54 | [[x...] { return [ X alloc ]; }() init]; |
| 55 | } |