| // RUN: %clang_cc1 -std=c++11 -fsyntax-only -verify %s |
| |
| // rdar://13784901 |
| |
| struct S0 { |
| int x; |
| static const int test0 = __alignof__(x); // expected-error {{invalid application of 'alignof' to a field of a class still being defined}} |
| static const int test1 = __alignof__(S0::x); // expected-error {{invalid application of 'alignof' to a field of a class still being defined}} |
| auto test2() -> char(&)[__alignof__(x)]; // expected-error {{invalid application of 'alignof' to a field of a class still being defined}} |
| }; |
| |
| struct S1; // expected-note 6 {{forward declaration}} |
| extern S1 s1; |
| const int test3 = __alignof__(s1); // expected-error {{invalid application of 'alignof' to an incomplete type 'S1'}} |
| |
| struct S2 { |
| S2(); |
| S1 &s; |
| int x; |
| |
| int test4 = __alignof__(x); // ok |
| int test5 = __alignof__(s); // expected-error {{invalid application of 'alignof' to an incomplete type 'S1'}} |
| }; |
| |
| const int test6 = __alignof__(S2::x); |
| const int test7 = __alignof__(S2::s); // expected-error {{invalid application of 'alignof' to an incomplete type 'S1'}} |
| |
| // Arguably, these should fail like the S1 cases do: the alignment of |
| // 's2.x' should depend on the alignment of both x-within-S2 and |
| // s2-within-S3 and thus require 'S3' to be complete. If we start |
| // doing the appropriate recursive walk to do that, we should make |
| // sure that these cases don't explode. |
| struct S3 { |
| S2 s2; |
| |
| static const int test8 = __alignof__(s2.x); |
| static const int test9 = __alignof__(s2.s); // expected-error {{invalid application of 'alignof' to an incomplete type 'S1'}} |
| auto test10() -> char(&)[__alignof__(s2.x)]; |
| static const int test11 = __alignof__(S3::s2.x); |
| static const int test12 = __alignof__(S3::s2.s); // expected-error {{invalid application of 'alignof' to an incomplete type 'S1'}} |
| auto test13() -> char(&)[__alignof__(s2.x)]; |
| }; |
| |
| // Same reasoning as S3. |
| struct S4 { |
| union { |
| int x; |
| }; |
| static const int test0 = __alignof__(x); |
| static const int test1 = __alignof__(S0::x); |
| auto test2() -> char(&)[__alignof__(x)]; |
| }; |
| |
| // Regression test for asking for the alignment of a field within an invalid |
| // record. |
| struct S5 { |
| S1 s; // expected-error {{incomplete type}} |
| int x; |
| }; |
| const int test8 = __alignof__(S5::x); |
| |
| long long int test14[2]; |
| |
| static_assert(alignof(test14) == 8, "foo"); // expected-warning {{'alignof' applied to an expression is a GNU extension}} |