73 lines
2.8 KiB
C++
73 lines
2.8 KiB
C++
/*
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* Cppcheck - A tool for static C/C++ code analysis
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* Copyright (C) 2007-2011 Daniel Marjamäki and Cppcheck team.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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//---------------------------------------------------------------------------
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// 64-bit portability
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//---------------------------------------------------------------------------
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#include "check64bit.h"
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#include "symboldatabase.h"
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//---------------------------------------------------------------------------
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// Register this check class (by creating a static instance of it)
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namespace
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{
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Check64BitPortability instance;
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}
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void Check64BitPortability::pointerassignment()
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{
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if (!_settings->_checkCodingStyle)
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return;
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for (const Token *tok = _tokenizer->tokens(); tok; tok = tok->next())
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{
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if (Token::Match(tok, "[;{}] %var% = %var% ;"))
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{
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const SymbolDatabase *symbolDatabase = _tokenizer->getSymbolDatabase();
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const Variable *var1(symbolDatabase->getVariableFromVarId(tok->tokAt(1)->varId()));
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const Variable *var2(symbolDatabase->getVariableFromVarId(tok->tokAt(3)->varId()));
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if (!var1 || !var2)
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continue;
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// Check if var1 is an int/long/DWORD variable
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if (!Token::Match(var1->nameToken()->previous(), "int|long|DWORD"))
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continue;
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// Check if var2 is a pointer variable
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if (!Token::simpleMatch(var2->nameToken()->previous(), "*"))
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continue;
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pointerassignmentError(tok->next());
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}
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}
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}
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void Check64BitPortability::pointerassignmentError(const Token *tok)
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{
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reportError(tok, Severity::portability,
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"addresstoint",
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"Assigning an address value to the integer (int/long/etc) type is not portable\n"
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"Assigning an address value to the integer (int/long/etc) type is not portable across different platforms and "
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"compilers. For example in 32-bit Windows and linux they are same width, but in 64-bit Windows and linux "
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"they are of different width. In worst case you end up assigning 64-bit address to 32-bit integer. The safe "
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"way is to always assign addresses only to pointer types (or typedefs).");
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}
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