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diff gcc/testsuite/g++.dg/cpp1y/constexpr-tracking-const5.C @ 145:1830386684a0

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gcc-9.2.0
author anatofuz
date Thu, 13 Feb 2020 11:34:05 +0900
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--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/testsuite/g++.dg/cpp1y/constexpr-tracking-const5.C	Thu Feb 13 11:34:05 2020 +0900
@@ -0,0 +1,17 @@
+// PR c++/91264
+// { dg-do compile { target c++14 } }
+
+struct A {
+  mutable int n;
+  constexpr A() : n(1) { n = 2; }
+};
+
+struct B {
+  const A a;
+  constexpr B() {
+    const_cast<A &>(a).n = 3;
+  }
+};
+
+constexpr B b{};
+static_assert((b.a.n, 1), "");