Add constructor test.

gold/testsuite/constructor_test.cc

@@ -0,0 +1,90 @@
+// constructor_test.cc -- a test case for gold global constructors
+
+// Copyright 2006, 2007 Free Software Foundation, Inc.
+// Written by Ian Lance Taylor <iant@google.com>.
+
+// This file is part of gold.
+
+// 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 3 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., 51 Franklin Street - Fifth Floor, Boston,
+// MA 02110-1301, USA.
+
+// This file just runs some global constructors and destructors.  The
+// last global destructor verifies that the state is as expected, and
+// we assume that it runs correctly itself.
+
+#include <cassert>
+#include <cstdlib>
+
+// These counters let us verify the state.
+
+int c1_count;
+int c2_count;
+int atexit_count;
+
+// This class verifies that there are no objects left when it is
+// destroyed.  Therefore, we can only have one instance of this
+// object.
+
+class c1
+{
+ public:
+  static int count;
+
+  c1()
+  { ++c1_count; }
+
+  ~c1()
+  {
+    --c1_count;
+    assert(c1_count == 0 && c2_count == 0 && atexit_count == 0);
+  }
+};
+
+c1 c1v;
+
+// A function called at atexit time.
+
+void
+atexit_function()
+{
+  --atexit_count;
+  assert(atexit_count == c2_count);
+}
+
+// A class which counts itself and also calls atexit.
+
+class c2
+{
+ public:
+  c2()
+  {
+    assert(atexit_count == c2_count);
+    ++c2_count;
+    atexit(atexit_function);
+    ++atexit_count;
+  }
+
+  ~c2()
+  { --c2_count; }
+};
+
+c2 c2v1;
+c2 c2v2;
+
+int
+main()
+{
+  return 0;
+}