[PATCH] c++: Add testcase for DR 2728

[Jakub Jelinek]

Hi!

Seems we already handle delete expressions the way the DR clarifies,
so this patch just adds a testcase which verifies that.

Tested on x86_64-linux, ok for trunk?

2024-09-25  Jakub Jelinek  <ja...@redhat.com>

        * g++.dg/DRs/dr2728.C: New test.

--- gcc/testsuite/g++.dg/DRs/dr2728.C.jj        2024-09-25 13:44:15.102534622 
+0200
+++ gcc/testsuite/g++.dg/DRs/dr2728.C   2024-09-25 13:44:09.876605940 +0200
@@ -0,0 +1,20 @@
+// DR 2728 - Evaluation of conversions in a delete-expression
+// { dg-do run }
+
+struct S {
+  S (int *x) : p (x) {}
+  operator int * () const { ++s; return p; }
+  int *p;
+  static int s;
+};
+int S::s;
+
+int
+main ()
+{
+  int *a = new int;
+  S s (a);
+  delete s;
+  if (S::s != 1)
+    __builtin_abort ();
+}

        Jakub