diff options
| author | Dimitry Andric <dim@FreeBSD.org> | 2018-07-28 11:06:01 +0000 |
|---|---|---|
| committer | Dimitry Andric <dim@FreeBSD.org> | 2018-07-28 11:06:01 +0000 |
| commit | 486754660bb926339aefcf012a3f848592babb8b (patch) | |
| tree | ecdbc446c9876f4f120f701c243373cd3cb43db3 /test/Layout/v6-empty.cpp | |
| parent | 55e6d896ad333f07bb3b1ba487df214fc268a4ab (diff) | |
Notes
Diffstat (limited to 'test/Layout/v6-empty.cpp')
| -rw-r--r-- | test/Layout/v6-empty.cpp | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/test/Layout/v6-empty.cpp b/test/Layout/v6-empty.cpp new file mode 100644 index 000000000000..d43db8dc32ec --- /dev/null +++ b/test/Layout/v6-empty.cpp @@ -0,0 +1,20 @@ +// RUN: %clang_cc1 -fsyntax-only -fclang-abi-compat=6 -triple x86_64-linux-gnu -fdump-record-layouts %s | FileCheck %s --check-prefix=CHECK --check-prefix=CHECK-V6 +// RUN: %clang_cc1 -fsyntax-only -fclang-abi-compat=7 -triple x86_64-linux-gnu -fdump-record-layouts %s | FileCheck %s --check-prefix=CHECK --check-prefix=CHECK-V7 + +// In Clang 6 and before, we determined that Nonempty was empty, so we +// applied EBO to it. +struct Nonempty { int : 4; }; +struct A : Nonempty { int n; }; +int k = sizeof(A); + +// CHECK:*** Dumping AST Record Layout +// CHECK: 0 | struct A +// CHECK-V6-NEXT: 0 | struct Nonempty (base) (empty) +// CHECK-V7-NEXT: 0 | struct Nonempty (base){{$}} +// CHECK-NEXT: 0:0-3 | int +// CHECK-V6-NEXT: 0 | int n +// CHECK-V7-NEXT: 4 | int n +// CHECK-V6-NEXT: | [sizeof=4, dsize=4, align=4, +// CHECK-V6-NEXT: | nvsize=4, nvalign=4] +// CHECK-V7-NEXT: | [sizeof=8, dsize=8, align=4, +// CHECK-V7-NEXT: | nvsize=8, nvalign=4] |