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extern/stdcxx/4.2.1/tests/support/18.setjmp.cpp

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+/***************************************************************************
+ *
+ * 18.setjmp.cpp - test exercising [support.runtime], header <setjmp.h>
+ *
+ * $Id: 18.setjmp.cpp 593007 2007-11-08 04:30:45Z sebor $
+ *
+ ***************************************************************************
+ *
+ * Licensed to the Apache Software  Foundation (ASF) under one or more
+ * contributor  license agreements.  See  the NOTICE  file distributed
+ * with  this  work  for  additional information  regarding  copyright
+ * ownership.   The ASF  licenses this  file to  you under  the Apache
+ * License, Version  2.0 (the  "License"); you may  not use  this file
+ * except in  compliance with the License.   You may obtain  a copy of
+ * the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the  License is distributed on an  "AS IS" BASIS,
+ * WITHOUT  WARRANTIES OR CONDITIONS  OF ANY  KIND, either  express or
+ * implied.   See  the License  for  the  specific language  governing
+ * permissions and limitations under the License.
+ *
+ * Copyright 2007 Rogue Wave Software, Inc.
+ * 
+ **************************************************************************/
+
+#include <setjmp.h>
+#include <driver.h>
+
+/**************************************************************************/
+
+jmp_buf env;
+
+void test_longjmp (int arg)
+{
+    longjmp (env, arg);
+
+    rw_assert (0, 0, __LINE__,
+               "call to longjmp(..., %d) returned", arg);
+}
+
+/**************************************************************************/
+
+static int
+run_test (int, char**)
+{
+#ifdef longjmp
+
+    // longjmp must not be #defined as a macro
+    rw_assert (0, 0, __LINE__, "longjmp #defined as a macro");
+
+#endif   // longjmp
+
+#ifdef jmp_buf
+
+    //jmp_buf must not be #defined as a macro
+    rw_assert (0, 0, __LINE__, "jmp_buf #defined as a macro");
+
+#endif   // jmp_buf
+
+#ifndef setjmp
+
+    //setjmp must be #defined as a macro
+    rw_assert (0, 0, __LINE__, "macro setjmp not #defined");
+
+#endif   // setjmp
+
+    // verify that setjmp works
+
+    // using volatile to work around a gcc optimizer bug:
+    //   http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34024
+    volatile int arg = 1;
+
+    int result;
+
+    result = setjmp (env);
+
+    if (0 == result) {
+
+        test_longjmp (arg);
+
+        rw_assert (0, 0, __LINE__,
+                   "call to longjmp(..., %d) returned", arg);
+    }
+    else {
+        rw_assert (arg == result, 0, __LINE__,
+                   "longjmp(..., %d) returned %d from setjmp()",
+                   arg, result);
+
+        // repeat a couple more times
+        if (arg < 3)
+            test_longjmp (++arg);
+    }
+
+    return 0;
+}
+
+/**************************************************************************/
+
+int main (int argc, char *argv[])
+{
+    return rw_test (argc, argv, __FILE__,
+                    "support.runtime",
+                    "header <setjmp.h>",
+                    run_test,
+                    "",
+                    (void*)0);
+}