gdb/

	* infcall.c (value_arg_coerce): Use value_cast_pointers for
	references.  Avoid value_cast to a reference type.  Don't silently
	convert pointers to references.
	* valops.c (value_cast_pointers): New, based on value_cast.
	(value_cast): Use it.  Reject reference types.
	(value_ref): New.
	(typecmp): Use it.
	* value.h (value_cast_pointers, value_ref): New prototypes.
gdb/testsuite/
	* gdb.cp/ref-params.exp: New test.
	* gdb.cp/ref-params.cc: New source file.
	* gdb.cp/Makefile.in (EXECUTABLES): Add ref-params.

1 files changed, 80 insertions, 0 deletions

diff --git a/gdb/testsuite/gdb.cp/ref-params.cc b/gdb/testsuite/gdb.cp/ref-params.cc
new file mode 100644
index 0000000..9ccfe09
--- /dev/null
+++ b/gdb/testsuite/gdb.cp/ref-params.cc
@@ -0,0 +1,80 @@
+/* This test script is part of GDB, the GNU debugger.
+
+   Copyright 2006
+   Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+ 
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+   */
+
+/* Author: Paul N. Hilfinger, AdaCore Inc. */
+
+struct Parent {
+  Parent (int id0) : id(id0) { }
+  int id;
+};
+
+struct Child : public Parent {
+  Child (int id0) : Parent(id0) { }
+};
+
+int f1(Parent& R)
+{
+  return R.id;			/* Set breakpoint marker3 here.  */
+}
+
+int f2(Child& C)
+{
+  return f1(C);			/* Set breakpoint marker2 here.  */
+}
+
+struct OtherParent {
+  OtherParent (int other_id0) : other_id(other_id0) { }
+  int other_id;
+};
+
+struct MultiChild : public Parent, OtherParent {
+  MultiChild (int id0) : Parent(id0), OtherParent(id0 * 2) { }
+};
+
+int mf1(OtherParent& R)
+{
+  return R.other_id;
+}
+
+int mf2(MultiChild& C)
+{
+  return mf1(C);
+}
+
+int main(void) 
+{
+  Child Q(42);
+  Child& QR = Q;
+
+  #ifdef usestubs
+     set_debug_traps();
+     breakpoint();
+  #endif
+
+  /* Set breakpoint marker1 here.  */
+
+  f2(Q);
+  f2(QR);
+
+  MultiChild MQ(53);
+  MultiChild& MQR = MQ;
+
+  mf2(MQ);			/* Set breakpoint MQ here.  */
+}