Hi!
This testcase got broken with r11-3826 and got fixed with r11-5628.
Tested on x86_64-linux -m32/-m64 with current trunk as well as 4 days old
compiler, committed to trunk as obvious.
2020-12-03 Jakub Jelinek <ja...@redhat.com>
PR c++/98104
* g++.dg/warn/pr98104.C: New test.
--- gcc/testsuite/g++.dg/warn/pr98104.C
+++ gcc/testsuite/g++.dg/warn/pr98104.C
@@ -0,0 +1,20 @@
+// PR c++/98104
+
+#include <new>
+
+struct B
+{
+ B ();
+ int *a;
+ char b;
+};
+
+struct D : public B {};
+void bar (B *);
+
+void
+foo ()
+{
+ D d;
+ bar (::new (static_cast<B*>(&d)) B); // { dg-bogus "placement new
constructing an object of type 'B' and size '\[0-9]*' in a region of type 'B'
and size '\[0-9]*'" }
+}
Jakub
