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cppcheck/checkother.cpp

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/*
* cppcheck - c/c++ syntax checking
* Copyright (C) 2007-2009 Daniel Marjamäki, Reijo Tomperi, Nicolas Le Cam
*
* 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, see <http://www.gnu.org/licenses/
*/
//---------------------------------------------------------------------------
#include "checkother.h"
#include <list>
#include <map>
#include <sstream>
#include <stdlib.h> // <- atoi
#include <cstring>
#include <cctype>
//---------------------------------------------------------------------------
//---------------------------------------------------------------------------
// Warning on C-Style casts.. p = (kalle *)foo;
//---------------------------------------------------------------------------
CheckOther::CheckOther(const Tokenizer *tokenizer, ErrorLogger *errorLogger)
{
_tokenizer = tokenizer;
_errorLogger = errorLogger;
}
CheckOther::~CheckOther()
{
}
void CheckOther::WarningOldStylePointerCast()
{
for (const Token *tok = _tokenizer->tokens(); tok; tok = tok->next())
{
// Old style pointer casting..
if (!Token::Match(tok, "( %type% * ) %var%"))
continue;
// Is "type" a class?
const std::string pattern("class " + tok->next()->str());
if (!Token::findmatch(_tokenizer->tokens(), pattern.c_str()))
continue;
std::ostringstream ostr;
ostr << _tokenizer->fileLine(tok) << ": C-style pointer casting";
_errorLogger->reportErr(ostr.str());
}
}
//---------------------------------------------------------------------------
// Redundant code..
//---------------------------------------------------------------------------
void CheckOther::WarningRedundantCode()
{
// if (p) delete p
for (const Token *tok = _tokenizer->tokens(); tok; tok = tok->next())
{
if (tok->str() != "if")
continue;
const char *varname1 = NULL;
const Token *tok2 = NULL;
if (Token::Match(tok, "if ( %var% )"))
{
varname1 = tok->strAt(2);
tok2 = tok->tokAt(4);
}
else if (Token::Match(tok, "if ( %var% != NULL )"))
{
varname1 = tok->strAt(2);
tok2 = tok->tokAt(6);
}
if (varname1 == NULL || tok2 == NULL)
continue;
bool err = false;
if (tok2->str() == "{")
{
tok2 = tok2->next();
if (Token::Match(tok2, "delete %var% ; }"))
{
err = (strcmp(tok2->strAt(1), varname1) == 0);
}
else if (Token::Match(tok2, "delete [ ] %var% ; }"))
{
err = (strcmp(tok2->strAt(1), varname1) == 0);
}
else if (Token::Match(tok2, "free ( %var% ) ; }"))
{
err = (strcmp(tok2->strAt(2), varname1) == 0);
}
else if (Token::Match(tok2, "kfree ( %var% ) ; }"))
{
err = (strcmp(tok2->strAt(2), varname1) == 0);
}
}
else
{
if (Token::Match(tok2, "delete %var% ;"))
{
err = (strcmp(tok2->strAt(1), varname1) == 0);
}
else if (Token::Match(tok2, "delete [ ] %var% ;"))
{
err = (strcmp(tok2->strAt(1), varname1) == 0);
}
else if (Token::Match(tok2, "free ( %var% ) ;"))
{
err = (strcmp(tok2->strAt(2), varname1) == 0);
}
else if (Token::Match(tok2, "kfree ( %var% ) ;"))
{
err = (strcmp(tok2->strAt(2), varname1) == 0);
}
}
if (err)
{
std::ostringstream ostr;
ostr << _tokenizer->fileLine(tok) << ": Redundant condition. It is safe to deallocate a NULL pointer";
_errorLogger->reportErr(ostr.str());
}
}
// Redundant condition
// if (haystack.find(needle) != haystack.end())
// haystack.remove(needle);
redundantCondition2();
}
//---------------------------------------------------------------------------
void CheckOther::redundantCondition2()
{
const char pattern[] = "if ( %var% . find ( %any% ) != %var% . end ( ) ) "
"{|{|"
" %var% . remove ( %any% ) ; "
"}|}|";
const Token *tok = Token::findmatch(_tokenizer->tokens(), pattern);
while (tok)
{
bool b = Token::Match(tok->tokAt(15), "{");
// Get tokens for the fields %var% and %any%
const Token *var1 = tok->tokAt(2);
const Token *any1 = tok->tokAt(6);
const Token *var2 = tok->tokAt(9);
const Token *var3 = tok->tokAt(b ? 16 : 15);
const Token *any2 = tok->tokAt(b ? 20 : 19);
// Check if all the "%var%" fields are the same and if all the "%any%" are the same..
if (var1->str() == var2->str() &&
var2->str() == var3->str() &&
any1->str() == any2->str())
{
std::ostringstream errmsg;
errmsg << _tokenizer->fileLine(tok)
<< ": Redundant condition found. The remove function in the STL will not do anything if element doesn't exist";
_errorLogger->reportErr(errmsg.str());
}
tok = Token::findmatch(tok->next(), pattern);
}
}
//---------------------------------------------------------------------------
//---------------------------------------------------------------------------
// if (condition) ....
//---------------------------------------------------------------------------
void CheckOther::WarningIf()
{
// Search for 'if (condition);'
for (const Token *tok = _tokenizer->tokens(); tok; tok = tok->next())
{
if (!Token::simpleMatch(tok, "if ("))
continue;
// Search for the end paranthesis for the condition..
int parlevel = 0;
for (const Token *tok2 = tok->next(); tok2; tok2 = tok2->next())
{
if (tok2->str() == "(")
++parlevel;
else if (tok2->str() == ")")
{
--parlevel;
if (parlevel <= 0)
{
if (Token::Match(tok2, ") ; !!else"))
{
std::ostringstream ostr;
ostr << _tokenizer->fileLine(tok) << ": Found \"if (condition);\"";
_errorLogger->reportErr(ostr.str());
}
break;
}
}
}
}
// Search for 'a=b; if (a==b)'
for (const Token *tok = _tokenizer->tokens(); tok; tok = tok->next())
{
// Begin statement?
if (! Token::Match(tok, "[;{}]"))
continue;
tok = tok->next();
if (! tok)
break;
if (!Token::Match(tok, "%var% = %var% ; if ( %var%"))
continue;
if (strcmp(tok->strAt(9), ")") != 0)
continue;
// var1 = var2 ; if ( var3 cond var4 )
const char *var1 = tok->strAt(0);
const char *var2 = tok->strAt(2);
const char *var3 = tok->strAt(6);
const char *cond = tok->strAt(7);
const char *var4 = tok->strAt(8);
// Check that var3 is equal with either var1 or var2
if (strcmp(var1, var3) && strcmp(var2, var3))
continue;
// Check that var4 is equal with either var1 or var2
if (strcmp(var1, var4) && strcmp(var2, var4))
continue;
// Check that there is a condition..
const char *p[6] = {"==", "<=", ">=", "!=", "<", ">"};
bool iscond = false;
for (int i = 0; i < 6; i++)
{
if (strcmp(cond, p[i]) == 0)
{
iscond = true;
break;
}
}
if (!iscond)
break;
// we found the error. Report.
std::ostringstream ostr;
ostr << _tokenizer->fileLine(tok->tokAt(4)) << ": The condition is always ";
for (int i = 0; i < 6; i++)
{
if (strcmp(cond, p[i]) == 0)
ostr << (i < 3 ? "True" : "False");
}
_errorLogger->reportErr(ostr.str());
}
}
//---------------------------------------------------------------------------
//---------------------------------------------------------------------------
// strtol(str, 0, radix) <- radix must be 0 or 2-36
//---------------------------------------------------------------------------
void CheckOther::InvalidFunctionUsage()
{
for (const Token *tok = _tokenizer->tokens(); tok; tok = tok->next())
{
if ((tok->str() != "strtol") && (tok->str() != "strtoul"))
continue;
// Locate the third parameter of the function call..
int parlevel = 0;
int param = 1;
for (const Token *tok2 = tok->next(); tok2; tok2 = tok2->next())
{
if (Token::Match(tok2, "("))
++parlevel;
else if (Token::Match(tok2, ")"))
--parlevel;
else if (parlevel == 1 && Token::Match(tok2, ","))
{
++param;
if (param == 3)
{
if (Token::Match(tok2, ", %num% )"))
{
int radix = atoi(tok2->strAt(1));
if (!(radix == 0 || (radix >= 2 && radix <= 36)))
{
std::ostringstream ostr;
ostr << _tokenizer->fileLine(tok2) << ": Invalid radix in call to strtol or strtoul. Must be 0 or 2-36";
_errorLogger->reportErr(ostr.str());
}
}
break;
}
}
}
}
}
//---------------------------------------------------------------------------
//---------------------------------------------------------------------------
// Assignment in condition
//---------------------------------------------------------------------------
void CheckOther::CheckIfAssignment()
{
for (const Token *tok = _tokenizer->tokens(); tok; tok = tok->next())
{
if (Token::Match(tok, "if ( %var% = %num% )") ||
Token::Match(tok, "if ( %var% = %str% )") ||
Token::Match(tok, "if ( %var% = %var% )"))
{
std::ostringstream ostr;
ostr << _tokenizer->fileLine(tok) << ": Possible bug. Should it be '==' instead of '='?";
_errorLogger->reportErr(ostr.str());
}
}
}
//---------------------------------------------------------------------------
//---------------------------------------------------------------------------
// Check for unsigned divisions
//---------------------------------------------------------------------------
void CheckOther::CheckUnsignedDivision()
{
// Check for "ivar / uvar" and "uvar / ivar"
std::map<std::string, char> varsign;
for (const Token *tok = _tokenizer->tokens(); tok; tok = tok->next())
{
if (Token::Match(tok, "[{};(,] %type% %var% [;=,)]"))
{
const char *type = tok->strAt(1);
if (strcmp(type, "char") == 0 || strcmp(type, "short") == 0 || strcmp(type, "int") == 0)
varsign[tok->strAt(2)] = 's';
}
else if (Token::Match(tok, "[{};(,] unsigned %type% %var% [;=,)]"))
varsign[tok->strAt(3)] = 'u';
else if (!Token::Match(tok, "[).]") && Token::Match(tok->next(), "%var% / %var%"))
{
const char *varname1 = tok->strAt(1);
const char *varname2 = tok->strAt(3);
char sign1 = varsign[varname1];
char sign2 = varsign[varname2];
if (sign1 && sign2 && sign1 != sign2)
{
// One of the operands are signed, the other is unsigned..
std::ostringstream ostr;
ostr << _tokenizer->fileLine(tok->next()) << ": Warning: Division with signed and unsigned operators";
_errorLogger->reportErr(ostr.str());
}
}
else if (!Token::Match(tok, "[).]") && Token::Match(tok->next(), "%var% / - %num%"))
{
const char *varname1 = tok->strAt(1);
char sign1 = varsign[varname1];
if (sign1 == 'u')
{
std::ostringstream ostr;
ostr << _tokenizer->fileLine(tok->next()) << ": Unsigned division. The result will be wrong.";
_errorLogger->reportErr(ostr.str());
}
}
else if (Token::Match(tok, "[([=*/+-] - %num% / %var%"))
{
const char *varname2 = tok->strAt(4);
char sign2 = varsign[varname2];
if (sign2 == 'u')
{
std::ostringstream ostr;
ostr << _tokenizer->fileLine(tok->next()) << ": Unsigned division. The result will be wrong.";
_errorLogger->reportErr(ostr.str());
}
}
}
}
//---------------------------------------------------------------------------
//---------------------------------------------------------------------------
// Check scope of variables..
//---------------------------------------------------------------------------
void CheckOther::CheckVariableScope()
{
// Walk through all tokens..
bool func = false;
int indentlevel = 0;
for (const Token *tok = _tokenizer->tokens(); tok; tok = tok->next())
{
// Skip class and struct declarations..
if ((tok->str() == "class") || (tok->str() == "struct"))
{
for (const Token *tok2 = tok; tok2; tok2 = tok2->next())
{
if (tok2->str() == "{")
{
int indentlevel2 = 0;
for (tok = tok2; tok; tok = tok->next())
{
if (tok->str() == "{")
{
++indentlevel2;
}
if (tok->str() == "}")
{
--indentlevel2;
if (indentlevel2 <= 0)
{
tok = tok->next();
break;
}
}
}
break;
}
if (Token::Match(tok2, "[,);]"))
{
break;
}
}
if (! tok)
break;
}
if (tok->str() == "{")
{
++indentlevel;
}
if (tok->str() == "}")
{
--indentlevel;
if (indentlevel == 0)
func = false;
}
if (indentlevel == 0 && Token::Match(tok, ") {"))
{
func = true;
}
if (indentlevel > 0 && func && Token::Match(tok, "[{};]"))
{
// First token of statement..
const Token *tok1 = tok->next();
if (! tok1)
continue;
if ((tok1->str() == "return") ||
(tok1->str() == "delete") ||
(tok1->str() == "goto") ||
(tok1->str() == "else"))
continue;
// Variable declaration?
if (Token::Match(tok1, "%var% %var% ;") ||
Token::Match(tok1, "%var% %var% ="))
{
CheckVariableScope_LookupVar(tok1, tok1->strAt(1));
}
}
}
}
//---------------------------------------------------------------------------
void CheckOther::CheckVariableScope_LookupVar(const Token *tok1, const char varname[])
{
const Token *tok = tok1;
// Skip the variable declaration..
while (tok && !Token::Match(tok, ";"))
tok = tok->next();
// Check if the variable is used in this indentlevel..
bool used = false, used1 = false;
int indentlevel = 0;
int parlevel = 0;
bool for_or_while = false;
while (indentlevel >= 0 && tok)
{
if (tok->str() == "{")
{
++indentlevel;
}
else if (tok->str() == "}")
{
--indentlevel;
if (indentlevel == 0)
{
if (for_or_while && used)
return;
used1 = used;
used = false;
}
}
else if (tok->str() == "(")
{
++parlevel;
}
else if (tok->str() == ")")
{
--parlevel;
}
else if (tok->str() == varname)
{
if (indentlevel == 0 || used1)
return;
used = true;
}
else if (indentlevel == 0)
{
if ((tok->str() == "for") || (tok->str() == "while"))
for_or_while = true;
if (parlevel == 0 && (tok->str() == ";"))
for_or_while = false;
}
tok = tok->next();
}
// Warning if "used" is true
std::ostringstream errmsg;
errmsg << _tokenizer->fileLine(tok1) << " The scope of the variable '" << varname << "' can be limited";
_errorLogger->reportErr(errmsg.str());
}
//---------------------------------------------------------------------------
//---------------------------------------------------------------------------
// Check for constant function parameters
//---------------------------------------------------------------------------
void CheckOther::CheckConstantFunctionParameter()
{
for (const Token *tok = _tokenizer->tokens(); tok; tok = tok->next())
{
if (Token::Match(tok, "[,(] const std :: %type% %var% [,)]"))
{
std::ostringstream errmsg;
errmsg << _tokenizer->fileLine(tok) << " " << tok->strAt(5) << " is passed by value, it could be passed by reference/pointer instead";
_errorLogger->reportErr(errmsg.str());
}
else if (Token::Match(tok, "[,(] const %type% %var% [,)]"))
{
// Check if type is a struct or class.
const std::string pattern(std::string("class|struct ") + tok->strAt(2));
if (Token::findmatch(_tokenizer->tokens(), pattern.c_str()))
{
std::ostringstream errmsg;
errmsg << _tokenizer->fileLine(tok) << " " << tok->strAt(3) << " is passed by value, it could be passed by reference/pointer instead";
_errorLogger->reportErr(errmsg.str());
}
}
}
}
//---------------------------------------------------------------------------
//---------------------------------------------------------------------------
// Check that all struct members are used
//---------------------------------------------------------------------------
void CheckOther::CheckStructMemberUsage()
{
const char *structname = 0;
for (const Token *tok = _tokenizer->tokens(); tok; tok = tok->next())
{
if (tok->fileIndex() != 0)
continue;
if (tok->str() == "}")
structname = 0;
if (Token::Match(tok, "struct|union %type% {"))
structname = tok->strAt(1);
if (structname && Token::Match(tok, "[{;]"))
{
const char *varname = 0;
if (Token::Match(tok->next(), "%type% %var% [;[]"))
varname = tok->strAt(2);
else if (Token::Match(tok->next(), "%type% %type% %var% [;[]"))
varname = tok->strAt(2);
else if (Token::Match(tok->next(), "%type% * %var% [;[]"))
varname = tok->strAt(3);
else if (Token::Match(tok->next(), "%type% %type% * %var% [;[]"))
varname = tok->strAt(4);
else
continue;
const std::string usagePattern(". " + std::string(varname));
bool used = false;
for (const Token *tok2 = _tokenizer->tokens(); tok2; tok2 = tok2->next())
{
if (Token::simpleMatch(tok2, usagePattern.c_str()))
{
used = true;
break;
}
}
if (! used)
{
std::ostringstream errmsg;
errmsg << _tokenizer->fileLine(tok->next()) << ": struct or union member '" << structname << "::" << varname << "' is never used";
_errorLogger->reportErr(errmsg.str());
}
}
}
}
//---------------------------------------------------------------------------
// Check usage of char variables..
//---------------------------------------------------------------------------
void CheckOther::CheckCharVariable()
{
for (const Token *tok = _tokenizer->tokens(); tok; tok = tok->next())
{
// Declaring the variable..
if (Token::Match(tok, "[{};(,] char %var% [;=,)]"))
{
// Set tok to point to the variable name
tok = tok->tokAt(2);
// Check usage of char variable..
int indentlevel = 0;
for (const Token *tok2 = tok->next(); tok2; tok2 = tok2->next())
{
if (tok2->str() == "{")
++indentlevel;
else if (tok2->str() == "}")
{
--indentlevel;
if (indentlevel <= 0)
break;
}
std::string temp = "%var% [ " + tok->str() + " ]";
if ((tok2->str() != ".") && Token::Match(tok2->next(), temp.c_str()))
{
std::ostringstream errmsg;
errmsg << _tokenizer->fileLine(tok2->next()) << ": Warning - using char variable as array index";
_errorLogger->reportErr(errmsg.str());
break;
}
std::string tempFirst = "%var% [&|] " + tok->str();
std::string tempSecond = tok->str() + " [&|]";
if (Token::Match(tok2, tempFirst.c_str()) || Token::Match(tok2, tempSecond.c_str()))
{
std::ostringstream errmsg;
errmsg << _tokenizer->fileLine(tok2) << ": Warning - using char variable in bit operation";
_errorLogger->reportErr(errmsg.str());
break;
}
}
}
}
}
//---------------------------------------------------------------------------
//---------------------------------------------------------------------------
// Incomplete statement..
//---------------------------------------------------------------------------
void CheckOther::CheckIncompleteStatement()
{
int parlevel = 0;
for (const Token *tok = _tokenizer->tokens(); tok; tok = tok->next())
{
if (tok->str() == "(")
++parlevel;
else if (tok->str() == ")")
--parlevel;
if (parlevel != 0)
continue;
if ((tok->str() != "#") && Token::Match(tok->next(), "; %str%") && !Token::Match(tok->tokAt(3), ","))
{
std::ostringstream errmsg;
errmsg << _tokenizer->fileLine(tok->next()) << ": Redundant code: Found a statement that begins with string constant";
_errorLogger->reportErr(errmsg.str());
}
if (!Token::Match(tok, "#") && Token::Match(tok->next(), "; %num%") && !Token::Match(tok->tokAt(3), ","))
{
std::ostringstream errmsg;
errmsg << _tokenizer->fileLine(tok->next()) << ": Redundant code: Found a statement that begins with numeric constant";
_errorLogger->reportErr(errmsg.str());
}
}
}
//---------------------------------------------------------------------------
//---------------------------------------------------------------------------
// Unreachable code below a 'return'
//---------------------------------------------------------------------------
void CheckOther::unreachableCode()
{
const Token *tok = Token::findmatch(_tokenizer->tokens(), "[;{}] return");
while (tok)
{
// Goto the 'return' token
tok = tok->next();
// Locate the end of the 'return' statement
while (tok && ! Token::Match(tok, ";"))
tok = tok->next();
while (tok && Token::Match(tok->next(), ";"))
tok = tok->next();
// If there is a statement below the return it is unreachable
if (!Token::Match(tok, "; case|default|}|#") && !Token::Match(tok, "; %var% :"))
{
std::ostringstream errmsg;
errmsg << _tokenizer->fileLine(tok->next()) << ": Unreachable code below a 'return'";
_errorLogger->reportErr(errmsg.str());
}
// Find the next 'return' statement
tok = Token::findmatch(tok, "[;{}] return");
}
}
//---------------------------------------------------------------------------
//---------------------------------------------------------------------------
// Usage of function variables
//---------------------------------------------------------------------------
static bool isOp(const Token *tok)
{
return bool(tok &&
(tok->str() == "&&" ||
tok->str() == "||" ||
tok->str() == "==" ||
tok->str() == "!=" ||
tok->str() == "<" ||
tok->str() == "<=" ||
tok->str() == ">" ||
tok->str() == ">=" ||
tok->str() == "<<" ||
Token::Match(tok, "[+-*/%&!~|^,[])?:]")));
}
void CheckOther::functionVariableUsage()
{
// Parse all executing scopes..
const Token *tok1 = _tokenizer->tokens();
if (!tok1)
return;
while ((tok1 = Token::findmatch(tok1->next(), ") const| {")) != NULL)
{
// Varname, usage {1=declare, 2=read, 4=write}
std::map<std::string, unsigned int> varUsage;
static const unsigned int USAGE_DECLARE = 1;
static const unsigned int USAGE_READ = 2;
static const unsigned int USAGE_WRITE = 4;
int indentlevel = 0;
for (const Token *tok = tok1; tok; tok = tok->next())
{
if (tok->str() == "{")
++indentlevel;
else if (tok->str() == "}")
{
--indentlevel;
if (indentlevel <= 0)
break;
}
else if (Token::Match(tok, "struct|union|class {") ||
Token::Match(tok, "struct|union|class %type% {"))
{
while (tok && tok->str() != "}")
tok = tok->next();
if (tok)
continue;
break;
}
if (Token::Match(tok, "[;{}] bool|char|short|int|long|float|double %var% ;|="))
varUsage[ tok->strAt(2)] = USAGE_DECLARE;
if (Token::Match(tok, "[;{}] bool|char|short|int|long|float|double * %var% ;|="))
varUsage[ tok->strAt(3)] = USAGE_DECLARE;
if (Token::Match(tok, "delete|return %var%"))
varUsage[ tok->strAt(1)] |= USAGE_READ;
if (Token::Match(tok, "%var% ="))
varUsage[ tok->str()] |= USAGE_WRITE;
if (Token::Match(tok, "else %var% ="))
varUsage[ tok->strAt(1)] |= USAGE_WRITE;
if (Token::Match(tok, ">>|& %var%"))
varUsage[ tok->strAt(1)] |= USAGE_WRITE;
if ((Token::Match(tok, "[(=&!]") || isOp(tok)) && Token::Match(tok->next(), "%var%"))
varUsage[ tok->strAt(1)] |= USAGE_READ;
if (Token::Match(tok, "-=|+=|*=|/=|&=|^= %var%") || Token::Match(tok, "|= %var%"))
varUsage[ tok->strAt(1)] |= USAGE_READ;
if (Token::Match(tok, "%var%") && (tok->next()->str() == ")" || isOp(tok->next())))
varUsage[ tok->str()] |= USAGE_READ;
if (Token::Match(tok, "[(,] %var% [,)]"))
varUsage[ tok->strAt(1)] |= USAGE_WRITE;
}
// Check usage of all variables in the current scope..
for (std::map<std::string, unsigned int>::const_iterator it = varUsage.begin(); it != varUsage.end(); ++it)
{
std::string varname = it->first;
unsigned int usage = it->second;
if (!std::isalpha(varname[0]))
continue;
if (!(usage & USAGE_DECLARE))
continue;
if (usage == USAGE_DECLARE)
{
std::ostringstream errmsg;
errmsg << _tokenizer->fileLine(tok1->next()) << ": Unused variable '" << varname << "'";
_errorLogger->reportErr(errmsg.str());
}
else if (!(usage & USAGE_READ))
{
std::ostringstream errmsg;
errmsg << _tokenizer->fileLine(tok1->next()) << ": Variable '" << varname << "' is assigned a value that is never used";
_errorLogger->reportErr(errmsg.str());
}
else if (!(usage & USAGE_WRITE))
{
std::ostringstream errmsg;
errmsg << _tokenizer->fileLine(tok1->next()) << ": Variable '" << varname << "' is not assigned a value";
_errorLogger->reportErr(errmsg.str());
}
}
}
}
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