From: Marek Polacek <polacek@redhat.com>
Date: Fri, 5 Apr 2024 17:40:33 +0000 (-0400)
Subject: c++: add fixed test [PR91079]
X-Git-Tag: basepoints/gcc-15~324
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2b2d3a135a43cbafadd8957e0b2543f38c390437;p=thirdparty%2Fgcc.git

c++: add fixed test [PR91079]

Fixed by r12-2975.

	PR c++/91079
	DR 1881

gcc/testsuite/ChangeLog:

	* g++.dg/ext/is_std_layout5.C: New test.
---

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 000000000000..875f3c0948d4
--- /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), "");