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+/*****************************************************************************
+
+ Licensed to Accellera Systems Initiative Inc. (Accellera) under one or
+ more contributor license agreements. See the NOTICE file distributed
+ with this work for additional information regarding copyright ownership.
+ Accellera 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.
+
+ *****************************************************************************/
+
+/*****************************************************************************
+
+ test.cpp --
+
+ Original Author: Martin Janssen, Synopsys, Inc., 2002-02-15
+
+ *****************************************************************************/
+
+/*****************************************************************************
+
+ MODIFICATION LOG - modifiers, enter your name, affiliation, date and
+ changes you are making here.
+
+ Name, Affiliation, Date:
+ Description of Modification:
+
+ *****************************************************************************/
+
+/*
+Nov/29/00 Ulli Holtmann
+
+Assignment of values other than 0 or 1 to an sc_bit results in a core dump
+on Sparc SC5.0 as well as g++. I used SystemC 1.0.1
+
+I can understand that only 0 and 1 make sense, so please either forbid
+assignment from an integer and cast the integer to bool first. A core dump is
+a bit to drastic.
+
+Example:
+*/
+
+#include <systemc.h>
+
+int sc_main(int argc, char* arg[])
+{
+ sc_bit res;
+
+ // works fine
+ res = 0; cout << res << "\n";
+ res = 1; cout << res << "\n";
+ res = bool(2); cout << res << "\n";
+
+ // results in a core dump
+ res = sc_bit(2); cout << res << "\n";
+ res = 2; cout << res << "\n";
+
+ return 0;
+}
+
+
+/*
+Dec/7/00 ulrich
+
+Hi Gene,
+
+I agree that the assignment of values other than 0,1 doesn't make much sense, so please go ahead
+and forbid it in one way or another. However, such an illegal assignment may easily happen in a
+user-program because the compiler accepts it. It very easy to write.
+
+The point I dislike is that the class library immediately core dumps without any warning or
+explanation. Does SystemC throw an exception? I don't know and I most likely will not write
+an exception handler, therefore I will never know. I just see that the SystemC kernel core
+dumps.
+
+What about an assert statement such like
+ assert(v==0 || v==1);
+That should me as the user a precise and reasonable explanation that I made a mistake. I could
+also accept an error message like E200x or so coming like when I enter illlegal bit characters,
+e.g. sc_bv<10>="102abd00". But please, not just a core dump.
+
+
+
+Jan/9/01 ulrich
+
+Hi Gene, I still only ask that the program does not core dump and instead prints an error
+message or warning like it does for sc_logic. I only object to the core dump itself. Example:
+
+
+int main(int argc, char* arg[])
+{
+ sc_logic l (5);
+ cout << l << "\n";
+
+ sc_bit b(2);
+ cout << b << "\n";
+}
+
+Both are invalid assignments. The first one prompt a warning (1006), the second a core
+dump. Both should prompt warnings/run time errors.
+
+I reduce the prioity to B2 because it's now only a matter of properly reporting an error.
+
+Other than
+this, I can share your view that assigning 2 is a user error.
+*/