Tested x86_64-pc-linux-gnu, applying to trunk. -- >8 -- Fixed by r12-2975.
PR c++/91079 DR 1881 gcc/testsuite/ChangeLog: * g++.dg/ext/is_std_layout5.C: New test. --- gcc/testsuite/g++.dg/ext/is_std_layout5.C | 13 +++++++++++++ 1 file changed, 13 insertions(+) create mode 100644 gcc/testsuite/g++.dg/ext/is_std_layout5.C diff --git a/gcc/testsuite/g++.dg/ext/is_std_layout5.C b/gcc/testsuite/g++.dg/ext/is_std_layout5.C new file mode 100644 index 00000000000..875f3c0948d --- /dev/null +++ b/gcc/testsuite/g++.dg/ext/is_std_layout5.C @@ -0,0 +1,13 @@ +// PR c++/91079 +// DR 1881 - Standard-layout classes and unnamed bit-fields +// { dg-do compile { target c++11 } } + +struct A { int a : 4; }; +struct B : A { int b : 3; }; +static_assert(__is_standard_layout(A), ""); +static_assert(!__is_standard_layout(B), ""); + +struct C { int : 0; }; +struct D : C { int : 0; }; +static_assert(__is_standard_layout(C), ""); +static_assert(!__is_standard_layout(D), ""); base-commit: e7d015b2506a1d9e84d9f7182e42e097147527e1 -- 2.44.0