* typeck.c (check_return_expr): Don't NRV optimize vars in
anonymous unions.
* decl.c (finish_function): Comment fix.
* g++.dg/opt/nrv14.C: New test.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@127510
138bc75d-0d04-0410-961f-
82ee72b054a4
+2007-08-15 Jakub Jelinek <jakub@redhat.com>
+
+ PR c++/32992
+ * typeck.c (check_return_expr): Don't NRV optimize vars in
+ anonymous unions.
+ * decl.c (finish_function): Comment fix.
+
2007-08-15 Paolo Carlini <pcarlini@suse.de>
PR c++/33035
gcc_assert (stmts_are_full_exprs_p ());
/* Set up the named return value optimization, if we can. Candidate
- variables are selected in check_return_value. */
+ variables are selected in check_return_expr. */
if (current_function_return_value)
{
tree r = current_function_return_value;
&& TREE_CODE (retval) == VAR_DECL
&& DECL_CONTEXT (retval) == current_function_decl
&& ! TREE_STATIC (retval)
+ && ! DECL_ANON_UNION_VAR_P (retval)
&& (DECL_ALIGN (retval)
>= DECL_ALIGN (DECL_RESULT (current_function_decl)))
/* The cv-unqualified type of the returned value must be the
+2007-08-15 Jakub Jelinek <jakub@redhat.com>
+
+ PR c++/32992
+ * g++.dg/opt/nrv14.C: New test.
+
2007-08-15 Paolo Carlini <pcarlini@suse.de>
PR c++/33035
--- /dev/null
+// PR c++/32992
+// { dg-do run }
+// { dg-options "-O2" }
+
+extern "C" void abort (void);
+
+struct A
+{
+ long int a1;
+ long int a2;
+ long int a3;
+};
+
+struct B
+{
+ long int f[3];
+ operator A ()
+ {
+ union
+ {
+ long int t[3];
+ A a;
+ };
+ for (int i = 0; i < 3; i++)
+ t[i] = f[i];
+ return a;
+ }
+};
+
+int
+main ()
+{
+ B b = { {1, 3, 5} };
+ A a = b;
+
+ if (a.a1 != b.f[0] || a.a2 != b.f[1] || a.a3 != b.f[2])
+ abort ();
+ return 0;
+}