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2 files changed, 293 insertions, 0 deletions

diff --git a/libstdc++-v3/testsuite/ext/ext_pointer/1.cc b/libstdc++-v3/testsuite/ext/ext_pointer/1.cc
new file mode 100644
index 000000000..d68ca5f85
--- /dev/null
+++ b/libstdc++-v3/testsuite/ext/ext_pointer/1.cc
@@ -0,0 +1,199 @@
+// Test for Container using non-standard pointer types.
+
+// Copyright (C) 2008, 2009
+// Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library.  This library 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 3, or (at your option)
+// any later version.
+
+// This library 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 library; see the file COPYING3.  If not see
+// <http://www.gnu.org/licenses/>.
+
+
+#include <algorithm>
+#include <testsuite_hooks.h>
+#include <ext/cast.h>
+#include <ext/pointer.h>
+
+using __gnu_cxx::_Pointer_adapter;
+using __gnu_cxx::_Relative_pointer_impl;
+using __gnu_cxx::__static_pointer_cast;
+using __gnu_cxx::__const_pointer_cast;
+
+
+void 
+test01() {
+  bool test __attribute__((unused)) = true;
+
+  typedef _Pointer_adapter<_Relative_pointer_impl<int> >       pointer;
+  typedef _Pointer_adapter<_Relative_pointer_impl<const int> > const_pointer;
+
+  int A[] = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 };
+
+  // basic pointer assignment/access tests.
+  pointer x = &A[0];
+  VERIFY(*x == 0);
+  VERIFY(std::equal(x, x+10, A)); 
+  pointer y(&A[9]);
+  VERIFY(*y == 9);
+
+  // assignability
+  pointer z(x);
+  VERIFY(z==x);
+  VERIFY(*z == 0);
+
+  z = y;
+  VERIFY(z==y);
+  VERIFY(z!=x);
+  VERIFY(z>x);
+  VERIFY(*z == 9);
+  
+  // pointer arithmetic
+  VERIFY(*++x == 1);
+  VERIFY(*--x == 0);
+  VERIFY(*(x++) == 0);
+  VERIFY(*(x--) == 1);
+  VERIFY(*(x+2) == 2);
+  VERIFY(*(2+x) == 2);
+  VERIFY(*(y-2) == 7);
+  VERIFY(y - x == 9);
+  VERIFY(&*y - x == 9);
+  VERIFY(y - &*x == 9);
+  
+  size_t s(y - x);
+  VERIFY(s == 9);
+}
+
+
+struct A {
+  mutable int i;
+};
+struct B : public A{
+  mutable int j;
+};
+typedef _Pointer_adapter<_Relative_pointer_impl<B> >       B_pointer; 
+typedef _Pointer_adapter<_Relative_pointer_impl<A> >       A_pointer; 
+typedef _Pointer_adapter<_Relative_pointer_impl<const A> > const_A_pointer; 
+typedef _Pointer_adapter<_Relative_pointer_impl<const B> > const_B_pointer; 
+
+
+// Test implicit conversion from B* to A*
+void inc(_Pointer_adapter<_Relative_pointer_impl<A> > a) {
+  a->i++;
+}
+// Test implicit conversion from B* to const B*
+void inc2(_Pointer_adapter<_Relative_pointer_impl<const B> > b) {
+  b->i++;
+  b->j++;
+}
+// Test implicit conversion from B* to const A*
+void inc3(_Pointer_adapter<_Relative_pointer_impl<const A> > a) {
+  a->i++;
+}
+
+void test02() {
+  bool test __attribute__((unused)) = true;
+
+  B b;
+  b.i = 2;
+  b.j = 2;
+
+  B_pointer Bptr(&b);
+  VERIFY(Bptr->i == 2);
+  Bptr->i++;
+  VERIFY(b.i == 3);
+  
+  const_B_pointer cBptr(&b);
+  b.i++;
+  VERIFY(cBptr->i == 4);
+  
+  A_pointer Aptr(&b);
+  b.i++;
+  VERIFY(Aptr->i == 5);
+  Aptr->i++;
+  VERIFY(b.i == 6);
+  
+  const_A_pointer cAptr(&b);
+  b.i++;
+  VERIFY(cAptr->i == 7);
+
+  const_B_pointer cBptr2(Bptr);
+  b.i++;
+  VERIFY(cBptr2->i == 8);
+  
+  A_pointer Aptr2(Bptr);
+  b.i++;
+  VERIFY(Aptr2->i == 9);
+  Aptr2->i++;
+  VERIFY(b.i == 10);
+
+  const_A_pointer cAptr2(Bptr);
+  b.i++;
+  VERIFY(cAptr2->i == 11);
+
+  // Implicit casting during invocation
+  inc(Bptr);
+  VERIFY(Bptr->i == 12);
+  inc2(Bptr);
+  VERIFY(Bptr->i == 13);
+  VERIFY(Bptr->j == 3);
+  inc3(Bptr);
+  VERIFY(Bptr->i == 14);
+}
+
+void test03() {
+  bool test __attribute__((unused)) = true;
+
+  B b;
+  B* bPtr = &b;
+  A* aPtr __attribute__((unused)) = __static_pointer_cast<A*>(bPtr);
+  const A *caPtr __attribute__((unused)) = __static_pointer_cast<const A*>(bPtr);
+  const B *cbPtr __attribute__((unused)) = __static_pointer_cast<const B*>(bPtr);
+
+  B_pointer Bptr2 = &b;
+
+  const A* caPtr2 __attribute__((unused)) = __static_pointer_cast<const A*>(Bptr2);
+  A * aPtr2 __attribute__((unused)) = __static_pointer_cast<A*>(Bptr2);
+  const B* cbPtr2 __attribute__((unused)) = __const_pointer_cast<const B*>(Bptr2);
+
+  const_A_pointer caPtr3 __attribute__((unused)) = __static_pointer_cast<const A*>(Bptr2);
+  A_pointer aPtr3 __attribute__((unused)) = __static_pointer_cast<A*>(Bptr2);
+  const_B_pointer cbPtr3 __attribute__((unused)) = __const_pointer_cast<const B*>(Bptr2);
+}
+
+// Confirm the usability of the __static_pointer_cast<> template function
+// to transform between _Pointer_adapter and standard versions.
+void test04() {
+  bool test __attribute__((unused)) = true;
+
+  B b;
+  B_pointer bPtr = &b;
+
+  A_pointer aPtr = __static_pointer_cast<A_pointer>(bPtr);
+  VERIFY(aPtr == bPtr);
+  B_pointer bPtr2 = __static_pointer_cast<B_pointer>(aPtr);
+  VERIFY(bPtr2 == aPtr);
+
+  A* aPtr3 = __static_pointer_cast<A*>(bPtr);
+  VERIFY(aPtr3 == bPtr);
+  B* bPtr3 = __static_pointer_cast<B*>(aPtr);
+  VERIFY(bPtr3 == aPtr);
+}
+
+int main()
+{
+  test01();
+  test02();
+  test03();
+  test04();
+  return 0;
+}
diff --git a/libstdc++-v3/testsuite/ext/ext_pointer/1_neg.cc b/libstdc++-v3/testsuite/ext/ext_pointer/1_neg.cc
new file mode 100644
index 000000000..0ceb9a659
--- /dev/null
+++ b/libstdc++-v3/testsuite/ext/ext_pointer/1_neg.cc
@@ -0,0 +1,94 @@
+// Bob Walters 10-2008
+
+// Test for Container using non-standard pointer types.
+
+// Copyright (C) 2008, 2009
+// Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library.  This library 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 3, or (at your option)
+// any later version.
+
+// This library 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 library; see the file COPYING3.  If not see
+// <http://www.gnu.org/licenses/>.
+
+
+// { dg-do compile }
+
+#include <algorithm>
+#include <testsuite_hooks.h>
+#include <ext/pointer.h>
+
+using __gnu_cxx::_Pointer_adapter;
+using __gnu_cxx::_Relative_pointer_impl;
+using __gnu_cxx::__static_pointer_cast;
+using __gnu_cxx::__const_pointer_cast;
+
+
+struct A {
+  int i;
+};
+struct B : public A{
+  int j;
+};
+typedef _Pointer_adapter<_Relative_pointer_impl<B> > B_pointer; 
+typedef _Pointer_adapter<_Relative_pointer_impl<const B> > const_B_pointer; 
+typedef _Pointer_adapter<_Relative_pointer_impl<A> > A_pointer; 
+typedef _Pointer_adapter<_Relative_pointer_impl<const A> > const_A_pointer; 
+
+
+void test01(void) {
+  bool test __attribute__((unused)) = true;
+
+  A a;
+  B b;
+
+  A_pointer aptr( &a );
+
+  // Can't implicitly cast from A* to B*
+  B_pointer bptr1(aptr); // { dg-error "instantiated from here" 31 }
+  B_pointer bptr2(&a); // { dg-error "instantiated from here" 32 }
+
+  // but explicit cast/conversion is OK.
+  B_pointer bptr3(__static_pointer_cast<B_pointer>(aptr)); // ok
+  B_pointer bptr4(__static_pointer_cast<B_pointer>(&a)); // ok
+
+  // Can't implicitly cast from A* to B*
+  bptr1 = aptr; // { dg-error "instantiated from here" 39 }
+  bptr1 = &a; // { dg-error "instantiated from here" 40 }
+
+  // but explicit cast/conversion is OK.
+  bptr1 = __static_pointer_cast<B_pointer>(aptr); // ok
+  bptr1 = __static_pointer_cast<B_pointer>(&a); // ok
+
+  // Similarly, can't shed constness via implicit cast
+  const_A_pointer captr(&a);
+  A_pointer aptr2(captr); // { dg-error "instantiated from here" 48 }
+
+  // but explicit cast/conversion is OK.
+  A_pointer aptr3(__const_pointer_cast<A_pointer>(captr)); // ok
+
+  // Similarly, can't shed constness via implicit cast
+  aptr2 = captr; // { dg-error "instantiated from here" 54 }
+
+  // but explicit cast/conversion is OK.
+  aptr3 = __const_pointer_cast<A_pointer>(captr); // ok
+
+  // Combine explicit const cast with implicit downcast.
+  const_B_pointer cbptr(&b);
+  A_pointer aptr4(cbptr); // { dg-error "instantiated from here" 61 }
+  aptr4 = cbptr; // { dg-error "instantiated from here" 62 }
+
+  A_pointer aptr5(__const_pointer_cast<B_pointer>(cbptr)); // ok
+  aptr5 = __const_pointer_cast<B_pointer>(cbptr);  // ok
+}
+
+// { dg-prune-output "include" }