constructor_throw.cpp revision 12855:588919e0e4aa
1/***************************************************************************** 2 3 Licensed to Accellera Systems Initiative Inc. (Accellera) under one or 4 more contributor license agreements. See the NOTICE file distributed 5 with this work for additional information regarding copyright ownership. 6 Accellera licenses this file to you under the Apache License, Version 2.0 7 (the "License"); you may not use this file except in compliance with the 8 License. You may obtain a copy of the License at 9 10 http://www.apache.org/licenses/LICENSE-2.0 11 12 Unless required by applicable law or agreed to in writing, software 13 distributed under the License is distributed on an "AS IS" BASIS, 14 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or 15 implied. See the License for the specific language governing 16 permissions and limitations under the License. 17 18 *****************************************************************************/ 19 20/***************************************************************************** 21 22 test01.cpp -- 23 24 Original Author: Andy Goodrich, Forte Design Systems, 14 March 2006 25 26 *****************************************************************************/ 27 28/***************************************************************************** 29 30 MODIFICATION LOG - modifiers, enter your name, affiliation, date and 31 changes you are making here. 32 33 $Log: constructor_throw.cpp,v $ 34 Revision 1.1.1.1 2006/12/15 20:25:56 acg 35 systemc_tests-2.3 36 37 Revision 1.1 2006/03/15 00:12:08 acg 38 Andy Goodrich: Forte Design Systems 39 First check in. 40 41 *****************************************************************************/ 42 43// This tests a bug when an exception is thrown in 44// sc_module::sc_module() for a dynamically allocated sc_module 45// object. We are calling sc_module::end_module() on a module that has 46// already been deleted. The scenario runs like this: 47// 48// a) the sc_module constructor is entered 49// b) the exception is thrown 50// c) the exception processor deletes the storage for the sc_module 51// d) the stack is unrolled causing the sc_module_name instance to be deleted 52// e) ~sc_module_name() calls end_module() with its pointer to the sc_module 53// f) because the sc_module has been deleted its storage is corrupted, 54// either by linking it to a free space chain, or by reuse of some sort 55// g) the m_simc field is garbage 56// h) the m_object_manager field is also garbage 57// i) an exception occurs 58// 59// This does not happen for automatic sc_module instances since the 60// storage for the module is not reclaimed its just part of the stack. 61// 62// I am fixing this by having the destructor for sc_module clear the 63// module pointer in its sc_module_name instance. That cuts things at 64// step (e) above, since the pointer will be null if the module has 65// already been deleted. To make sure the module stack is okay, I call 66// end-module() in ~sc_module in the case where there is an 67// sc_module_name pointer lying around. 68 69#include "systemc.h" 70 71SC_MODULE(X) 72{ 73 SC_CTOR(X) 74 { 75 SC_REPORT_ERROR(SC_ID_SET_TIME_RESOLUTION_,""); 76 } 77}; 78 79int sc_main(int argc, char* argv[]) 80{ 81 sc_module* x_p = new X("x"); 82 83 cout << "Program completed" << endl; 84 return 0; 85} 86 87