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Refactoring: some refactoring of ExecutionPath. The foundError was removed. No automatic bailout of all checks are made when errors are found.

This commit is contained in:
Daniel Marjamäki 2010-04-04 11:24:52 +02:00
parent 78852b08ab
commit abceff497b
5 changed files with 90 additions and 110 deletions
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10
lib/checkmemoryleak.cpp
View File

@ -2747,7 +2747,7 @@ private:
} }
/** return */ /** return */
static void ret(const std::list<ExecutionPath *> &checks, const Token *tok, bool &foundError) static void ret(const std::list<ExecutionPath *> &checks, const Token *tok)
{ {
std::list<ExecutionPath *>::const_iterator it; std::list<ExecutionPath *>::const_iterator it;
for (it = checks.begin(); it != checks.end(); ++it) for (it = checks.begin(); it != checks.end(); ++it)
@ -2759,7 +2759,6 @@ private:
if (checkMemleak) if (checkMemleak)
{ {
checkMemleak->memleakError(tok, C->varname, false); checkMemleak->memleakError(tok, C->varname, false);
foundError = true;
break; break;
} }
} }
@ -2767,7 +2766,7 @@ private:
} }
/** parse the tokens */ /** parse the tokens */
const Token *parse(const Token &tok, bool &foundError, std::list<ExecutionPath *> &checks) const const Token *parse(const Token &tok, std::list<ExecutionPath *> &checks) const
{ {
//std::cout << "CheckLocalLeaks::parse " << tok.str() << std::endl; //std::cout << "CheckLocalLeaks::parse " << tok.str() << std::endl;
//printOut(checks); //printOut(checks);
@ -2808,7 +2807,7 @@ private:
if (tok.str() == "return") if (tok.str() == "return")
{ {
ret(checks, &tok, foundError); ret(checks, &tok);
} }
return &tok; return &tok;
@ -2817,8 +2816,7 @@ private:
/** going out of scope - all execution paths end */ /** going out of scope - all execution paths end */
void end(const std::list<ExecutionPath *> &checks, const Token *tok) const void end(const std::list<ExecutionPath *> &checks, const Token *tok) const
{ {
bool foundError = false; ret(checks, tok);
ret(checks, tok, foundError);
} }
}; };

127
lib/checkother.cpp
View File

@ -1474,8 +1474,12 @@ private:
} }
} }
/** variable is dereferenced. If the variable is null there's an error */ /**
static void dereference(bool &foundError, std::list<ExecutionPath *> &checks, const Token *tok) * Dereferencing variable. Check if it is safe (if the variable is null there's an error)
* @param checks Checks
* @param tok token where dereferencing happens
*/
static void dereference(std::list<ExecutionPath *> &checks, const Token *tok)
{ {
const unsigned int varid(tok->varId()); const unsigned int varid(tok->varId());
@ -1485,19 +1489,18 @@ private:
CheckNullpointer *c = dynamic_cast<CheckNullpointer *>(*it); CheckNullpointer *c = dynamic_cast<CheckNullpointer *>(*it);
if (c && c->varId == varid && c->null) if (c && c->varId == varid && c->null)
{ {
foundError = true;
CheckOther *checkOther = dynamic_cast<CheckOther *>(c->owner); CheckOther *checkOther = dynamic_cast<CheckOther *>(c->owner);
if (checkOther) if (checkOther)
{ {
checkOther->nullPointerError(tok, c->varname); checkOther->nullPointerError(tok, c->varname);
break; return;
} }
} }
} }
} }
/** parse tokens */ /** parse tokens */
const Token *parse(const Token &tok, bool &foundError, std::list<ExecutionPath *> &checks) const const Token *parse(const Token &tok, std::list<ExecutionPath *> &checks) const
{ {
if (Token::Match(tok.previous(), "[;{}] const| %type% * %var% ;")) if (Token::Match(tok.previous(), "[;{}] const| %type% * %var% ;"))
{ {
@ -1543,7 +1546,7 @@ private:
std::list<const Token *> var; std::list<const Token *> var;
parseFunctionCall(tok, var, 0); parseFunctionCall(tok, var, 0);
for (std::list<const Token *>::const_iterator it = var.begin(); it != var.end(); ++it) for (std::list<const Token *>::const_iterator it = var.begin(); it != var.end(); ++it)
dereference(foundError, checks, *it); dereference(checks, *it);
} }
if (tok.varId() != 0) if (tok.varId() != 0)
@ -1551,17 +1554,17 @@ private:
if (Token::Match(tok.previous(), "[;{}=] %var% = 0 ;")) if (Token::Match(tok.previous(), "[;{}=] %var% = 0 ;"))
setnull(checks, tok.varId()); setnull(checks, tok.varId());
else if (Token::Match(tok.tokAt(-2), "[;{}=+-/(,] * %var%")) else if (Token::Match(tok.tokAt(-2), "[;{}=+-/(,] * %var%"))
dereference(foundError, checks, &tok); dereference(checks, &tok);
else if (Token::Match(tok.tokAt(-2), "return * %var%")) else if (Token::Match(tok.tokAt(-2), "return * %var%"))
dereference(foundError, checks, &tok); dereference(checks, &tok);
else if (!Token::simpleMatch(tok.tokAt(-2), "& (") && Token::Match(tok.next(), ". %var%")) else if (!Token::simpleMatch(tok.tokAt(-2), "& (") && Token::Match(tok.next(), ". %var%"))
dereference(foundError, checks, &tok); dereference(checks, &tok);
else if (Token::Match(tok.previous(), "[;{}=+-/(,] %var% [ %any% ]")) else if (Token::Match(tok.previous(), "[;{}=+-/(,] %var% [ %any% ]"))
dereference(foundError, checks, &tok); dereference(checks, &tok);
else if (Token::Match(tok.previous(), "return %var% [ %any% ]")) else if (Token::Match(tok.previous(), "return %var% [ %any% ]"))
dereference(foundError, checks, &tok); dereference(checks, &tok);
else if (Token::Match(&tok, "%var% (")) else if (Token::Match(&tok, "%var% ("))
dereference(foundError, checks, &tok); dereference(checks, &tok);
else else
bailOutVar(checks, tok.varId()); bailOutVar(checks, tok.varId());
} }
@ -1575,7 +1578,6 @@ private:
if (checkOther) if (checkOther)
{ {
checkOther->nullPointerError(&tok); checkOther->nullPointerError(&tok);
foundError = true;
} }
} }
} }
@ -1588,11 +1590,10 @@ private:
{ {
if (Token::Match(&tok, "!| %var% (")) if (Token::Match(&tok, "!| %var% ("))
{ {
bool foundError = false;
std::list<const Token *> var; std::list<const Token *> var;
parseFunctionCall(tok.str() == "!" ? *tok.next() : tok, var, 0); parseFunctionCall(tok.str() == "!" ? *tok.next() : tok, var, 0);
for (std::list<const Token *>::const_iterator it = var.begin(); it != var.end(); ++it) for (std::list<const Token *>::const_iterator it = var.begin(); it != var.end(); ++it)
dereference(foundError, checks, *it); dereference(checks, *it);
} }
return ExecutionPath::parseCondition(tok, checks); return ExecutionPath::parseCondition(tok, checks);
@ -1656,7 +1657,7 @@ private:
} }
/** Initializing a pointer value. For example: *p = 0; */ /** Initializing a pointer value. For example: *p = 0; */
static void init_pointer(bool &foundError, std::list<ExecutionPath *> &checks, const Token *tok) static void init_pointer(std::list<ExecutionPath *> &checks, const Token *tok)
{ {
const unsigned int varid(tok->varId()); const unsigned int varid(tok->varId());
if (!varid) if (!varid)
@ -1676,7 +1677,7 @@ private:
} }
else else
{ {
use_pointer(foundError, checks, tok); use_pointer(checks, tok);
} }
} }
@ -1685,7 +1686,7 @@ private:
} }
/** Deallocate a pointer. For example: free(p); */ /** Deallocate a pointer. For example: free(p); */
static void dealloc_pointer(bool &foundError, std::list<ExecutionPath *> &checks, const Token *tok) static void dealloc_pointer(std::list<ExecutionPath *> &checks, const Token *tok)
{ {
const unsigned int varid(tok->varId()); const unsigned int varid(tok->varId());
if (!varid) if (!varid)
@ -1702,7 +1703,6 @@ private:
CheckOther *checkOther = dynamic_cast<CheckOther *>(c->owner); CheckOther *checkOther = dynamic_cast<CheckOther *>(c->owner);
if (checkOther) if (checkOther)
{ {
foundError = true;
checkOther->uninitvarError(tok, c->varname); checkOther->uninitvarError(tok, c->varname);
break; break;
} }
@ -1777,16 +1777,16 @@ private:
/** /**
* use - called from the use* functions below. * use - called from the use* functions below.
* @param foundError this is set to true if an error is found
* @param checks all available checks * @param checks all available checks
* @param tok variable token * @param tok variable token
* @param mode specific behaviour * @param mode specific behaviour
* @return if error is found, true is returned
*/ */
static void use(bool &foundError, std::list<ExecutionPath *> &checks, const Token *tok, const int mode) static bool use(std::list<ExecutionPath *> &checks, const Token *tok, const int mode)
{ {
const unsigned int varid(tok->varId()); const unsigned int varid(tok->varId());
if (varid == 0) if (varid == 0)
return; return false;
std::list<ExecutionPath *>::const_iterator it; std::list<ExecutionPath *>::const_iterator it;
for (it = checks.begin(); it != checks.end(); ++it) for (it = checks.begin(); it != checks.end(); ++it)
@ -1819,56 +1819,55 @@ private:
checkOther->uninitdataError(tok, c->varname); checkOther->uninitdataError(tok, c->varname);
else else
checkOther->uninitvarError(tok, c->varname); checkOther->uninitvarError(tok, c->varname);
foundError = true; return true;
break;
} }
} }
} }
// No error found
return false;
} }
/** /**
* Reading variable. Use this function in situations when it is * Reading variable. Use this function in situations when it is
* invalid to read the data of the variable but not the address. * invalid to read the data of the variable but not the address.
* @param foundError this is set to true if an error is found
* @param checks all available checks * @param checks all available checks
* @param tok variable token * @param tok variable token
* @return if error is found, true is returned
*/ */
static void use(bool &foundError, std::list<ExecutionPath *> &checks, const Token *tok) static bool use(std::list<ExecutionPath *> &checks, const Token *tok)
{ {
use(foundError, checks, tok, 0); return use(checks, tok, 0);
} }
/** /**
* Reading array elements. If the variable is not an array then the usage is ok. * Reading array elements. If the variable is not an array then the usage is ok.
* @param foundError this is set to true if an error is found
* @param checks all available checks * @param checks all available checks
* @param tok variable token * @param tok variable token
*/ */
static void use_array(bool &foundError, std::list<ExecutionPath *> &checks, const Token *tok) static void use_array(std::list<ExecutionPath *> &checks, const Token *tok)
{ {
use(foundError, checks, tok, 1); use(checks, tok, 1);
} }
/** /**
* Bad pointer usage. If the variable is not a pointer then the usage is ok. * Bad pointer usage. If the variable is not a pointer then the usage is ok.
* @param foundError this is set to true if an error is found
* @param checks all available checks * @param checks all available checks
* @param tok variable token * @param tok variable token
*/ */
static void use_pointer(bool &foundError, std::list<ExecutionPath *> &checks, const Token *tok) static void use_pointer(std::list<ExecutionPath *> &checks, const Token *tok)
{ {
use(foundError, checks, tok, 2); use(checks, tok, 2);
} }
/** /**
* Using variable.. if it's a dead pointer the usage is invalid. * Using variable.. if it's a dead pointer the usage is invalid.
* @param foundError this is set to true if an error is found
* @param checks all available checks * @param checks all available checks
* @param tok variable token * @param tok variable token
*/ */
static void use_dead_pointer(bool &foundError, std::list<ExecutionPath *> &checks, const Token *tok) static void use_dead_pointer(std::list<ExecutionPath *> &checks, const Token *tok)
{ {
use(foundError, checks, tok, 3); use(checks, tok, 3);
} }
/** declaring a variable */ /** declaring a variable */
@ -1916,7 +1915,7 @@ private:
} }
/** parse tokens. @sa ExecutionPath::parse */ /** parse tokens. @sa ExecutionPath::parse */
const Token *parse(const Token &tok, bool &foundError, std::list<ExecutionPath *> &checks) const const Token *parse(const Token &tok, std::list<ExecutionPath *> &checks) const
{ {
// Variable declaration.. // Variable declaration..
if (tok.str() != "return") if (tok.str() != "return")
@ -1967,13 +1966,13 @@ private:
// Used.. // Used..
if (Token::Match(tok.previous(), "[[(,+-*/] %var% []),+-*/]")) if (Token::Match(tok.previous(), "[[(,+-*/] %var% []),+-*/]"))
{ {
use(foundError, checks, &tok); use(checks, &tok);
return &tok; return &tok;
} }
if (Token::Match(tok.previous(), "++|--") || Token::Match(tok.next(), "++|--")) if (Token::Match(tok.previous(), "++|--") || Token::Match(tok.next(), "++|--"))
{ {
use(foundError, checks, &tok); use(checks, &tok);
return &tok; return &tok;
} }
@ -1989,7 +1988,13 @@ private:
if (tok2->varId() && if (tok2->varId() &&
!Token::Match(tok2->previous(), "&|::") && !Token::Match(tok2->previous(), "&|::") &&
!Token::simpleMatch(tok2->next(), "=")) !Token::simpleMatch(tok2->next(), "="))
use(foundError, checks, tok2); {
bool foundError = use(checks, tok2);
if (foundError)
{
bailOutVar(checks, tok2->varId());
}
}
} }
// pointer aliasing? // pointer aliasing?
@ -2001,15 +2006,15 @@ private:
if (Token::simpleMatch(tok.next(), "(")) if (Token::simpleMatch(tok.next(), "("))
{ {
use_pointer(foundError, checks, &tok); use_pointer(checks, &tok);
} }
if (Token::Match(tok.tokAt(-2), "[;{}] *")) if (Token::Match(tok.tokAt(-2), "[;{}] *"))
{ {
if (Token::simpleMatch(tok.next(), "=")) if (Token::simpleMatch(tok.next(), "="))
init_pointer(foundError, checks, &tok); init_pointer(checks, &tok);
else else
use_pointer(foundError, checks, &tok); use_pointer(checks, &tok);
return &tok; return &tok;
} }
@ -2025,11 +2030,11 @@ private:
if (Token::Match(eq, "+=|-=|*=|/=|&=|^=") || eq->str() == "|=") if (Token::Match(eq, "+=|-=|*=|/=|&=|^=") || eq->str() == "|=")
{ {
if (tok.previous()->str() == "*") if (tok.previous()->str() == "*")
use_pointer(foundError, checks, &tok); use_pointer(checks, &tok);
else if (tok.next()->str() == "[") else if (tok.next()->str() == "[")
use_array(foundError, checks, &tok); use_array(checks, &tok);
else else
use(foundError, checks, &tok); use(checks, &tok);
} }
} }
@ -2059,7 +2064,7 @@ private:
if (Token::simpleMatch(tok.previous(), "delete") || if (Token::simpleMatch(tok.previous(), "delete") ||
Token::simpleMatch(tok.tokAt(-3), "delete [ ]")) Token::simpleMatch(tok.tokAt(-3), "delete [ ]"))
{ {
dealloc_pointer(foundError, checks, &tok); dealloc_pointer(checks, &tok);
return &tok; return &tok;
} }
} }
@ -2072,7 +2077,7 @@ private:
// deallocate pointer // deallocate pointer
if (Token::Match(&tok, "free|kfree|fclose ( %var% )")) if (Token::Match(&tok, "free|kfree|fclose ( %var% )"))
{ {
dealloc_pointer(foundError, checks, tok.tokAt(2)); dealloc_pointer(checks, tok.tokAt(2));
return tok.tokAt(3); return tok.tokAt(3);
} }
@ -2081,7 +2086,7 @@ private:
std::list<const Token *> var; std::list<const Token *> var;
parseFunctionCall(tok, var, 1); parseFunctionCall(tok, var, 1);
for (std::list<const Token *>::const_iterator it = var.begin(); it != var.end(); ++it) for (std::list<const Token *>::const_iterator it = var.begin(); it != var.end(); ++it)
use_array(foundError, checks, *it); use_array(checks, *it);
} }
// strncpy doesn't 0-terminate first parameter // strncpy doesn't 0-terminate first parameter
@ -2122,7 +2127,7 @@ private:
else if (tok2->varId()) else if (tok2->varId())
{ {
if (Token::Match(tok2->tokAt(-2), "[(,] *") || Token::Match(tok2->next(), ". %var%")) if (Token::Match(tok2->tokAt(-2), "[(,] *") || Token::Match(tok2->next(), ". %var%"))
use_dead_pointer(foundError, checks, tok2); use_dead_pointer(checks, tok2);
// it is possible that the variable is initialized here // it is possible that the variable is initialized here
bailouts.insert(tok2->varId()); bailouts.insert(tok2->varId());
@ -2163,7 +2168,7 @@ private:
// Todo: if (!array && .. // Todo: if (!array && ..
if (Token::Match(tok.next(), "%var% ;")) if (Token::Match(tok.next(), "%var% ;"))
{ {
use(foundError, checks, tok.next()); use(checks, tok.next());
} }
} }
@ -2181,7 +2186,7 @@ private:
{ {
if (!Token::Match(tok.tokAt(-3), "[;{}] %var% =")) if (!Token::Match(tok.tokAt(-3), "[;{}] %var% ="))
{ {
use(foundError, checks, &tok); use(checks, &tok);
return &tok; return &tok;
} }
@ -2193,7 +2198,7 @@ private:
if (tok2 && !Token::simpleMatch(tok2->previous(), "*")) if (tok2 && !Token::simpleMatch(tok2->previous(), "*"))
*/ */
{ {
use(foundError, checks, &tok); use(checks, &tok);
return &tok; return &tok;
} }
} }
@ -2206,7 +2211,7 @@ private:
while (Token::Match(tok2, ". %var%")) while (Token::Match(tok2, ". %var%"))
tok2 = tok2->tokAt(2); tok2 = tok2->tokAt(2);
if (tok2 && tok2->str() != "=") if (tok2 && tok2->str() != "=")
use_pointer(foundError, checks, &tok); use_pointer(checks, &tok);
else else
bailOutVar(checks, tok.varId()); bailOutVar(checks, tok.varId());
return &tok; return &tok;
@ -2220,7 +2225,7 @@ private:
if (Token::Match(tok.tokAt(-2), "[,(=] *")) if (Token::Match(tok.tokAt(-2), "[,(=] *"))
{ {
use_pointer(foundError, checks, &tok); use_pointer(checks, &tok);
return &tok; return &tok;
} }
@ -2254,7 +2259,7 @@ private:
{ {
// If the variable hasn't been initialized then call "use" // If the variable hasn't been initialized then call "use"
if (varid1.find(tok2->next()->varId()) == varid1.end()) if (varid1.find(tok2->next()->varId()) == varid1.end())
use(foundError, checks, tok2->next()); use(checks, tok2->next());
} }
// goto stepcode // goto stepcode
@ -2302,7 +2307,7 @@ private:
tok2 = tok2->next(); tok2 = tok2->next();
// call "use" // call "use"
use(foundError, checks, tok2); use(checks, tok2);
} }
} }
} }
@ -2313,22 +2318,20 @@ private:
bool parseCondition(const Token &tok, std::list<ExecutionPath *> &checks) bool parseCondition(const Token &tok, std::list<ExecutionPath *> &checks)
{ {
bool foundError = false;
if (tok.varId() && Token::Match(&tok, "%var% <|<=|==|!=|)|[")) if (tok.varId() && Token::Match(&tok, "%var% <|<=|==|!=|)|["))
use(foundError, checks, &tok); use(checks, &tok);
else if (Token::Match(&tok, "!| %var% (")) else if (Token::Match(&tok, "!| %var% ("))
{ {
std::list<const Token *> var; std::list<const Token *> var;
parseFunctionCall(tok.str() == "!" ? *tok.next() : tok, var, 1); parseFunctionCall(tok.str() == "!" ? *tok.next() : tok, var, 1);
for (std::list<const Token *>::const_iterator it = var.begin(); it != var.end(); ++it) for (std::list<const Token *>::const_iterator it = var.begin(); it != var.end(); ++it)
use_array(foundError, checks, *it); use_array(checks, *it);
} }
else if (Token::Match(&tok, "! %var% )")) else if (Token::Match(&tok, "! %var% )"))
{ {
use(foundError, checks, &tok); use(checks, &tok);
return false; return false;
} }

57
lib/executionpath.cpp
View File

@ -56,17 +56,17 @@ bool ExecutionPath::parseCondition(const Token &tok, std::list<ExecutionPath *>
} }
static const Token *checkExecutionPaths_(const Token *tok, std::list<ExecutionPath *> &checks) static void checkExecutionPaths_(const Token *tok, std::list<ExecutionPath *> &checks)
{ {
if (!tok || tok->str() == "}" || checks.empty()) if (!tok || tok->str() == "}" || checks.empty())
return 0; return;
const std::auto_ptr<ExecutionPath> check(checks.front()->copy()); const std::auto_ptr<ExecutionPath> check(checks.front()->copy());
for (; tok; tok = tok->next()) for (; tok; tok = tok->next())
{ {
if (tok->str() == "}") if (tok->str() == "}")
return 0; return;
if (Token::simpleMatch(tok, "while (")) if (Token::simpleMatch(tok, "while ("))
{ {
@ -74,7 +74,7 @@ static const Token *checkExecutionPaths_(const Token *tok, std::list<ExecutionPa
if (checks.size() > 10 || check->parseCondition(*tok->tokAt(2), checks)) if (checks.size() > 10 || check->parseCondition(*tok->tokAt(2), checks))
{ {
ExecutionPath::bailOut(checks); ExecutionPath::bailOut(checks);
return 0; return;
} }
// skip "while (fgets()!=NULL)" // skip "while (fgets()!=NULL)"
@ -95,7 +95,7 @@ static const Token *checkExecutionPaths_(const Token *tok, std::list<ExecutionPa
if (tok->str() == "goto") if (tok->str() == "goto")
{ {
ExecutionPath::bailOut(checks); ExecutionPath::bailOut(checks);
return 0; return;
} }
// for/while/switch/do .. bail out // for/while/switch/do .. bail out
@ -110,7 +110,7 @@ static const Token *checkExecutionPaths_(const Token *tok, std::list<ExecutionPa
if (!tok2 || tok2->str() != "{") if (!tok2 || tok2->str() != "{")
{ {
ExecutionPath::bailOut(checks); ExecutionPath::bailOut(checks);
return 0; return;
} }
// skip { .. } // skip { .. }
@ -137,13 +137,13 @@ static const Token *checkExecutionPaths_(const Token *tok, std::list<ExecutionPa
if (Token::simpleMatch(tok, ") {")) if (Token::simpleMatch(tok, ") {"))
{ {
ExecutionPath::bailOut(checks); ExecutionPath::bailOut(checks);
return 0; return;
} }
if (Token::Match(tok, "abort|exit (")) if (Token::Match(tok, "abort|exit ("))
{ {
ExecutionPath::bailOut(checks); ExecutionPath::bailOut(checks);
return 0; return;
} }
// don't parse into "struct type { .." // don't parse into "struct type { .."
@ -160,14 +160,14 @@ static const Token *checkExecutionPaths_(const Token *tok, std::list<ExecutionPa
if (Token::Match(tok->tokAt(2), ". %var% =")) if (Token::Match(tok->tokAt(2), ". %var% ="))
{ {
ExecutionPath::bailOut(checks); ExecutionPath::bailOut(checks);
return 0; return;
} }
tok = tok->next()->link(); tok = tok->next()->link();
if (!tok) if (!tok)
{ {
ExecutionPath::bailOut(checks); ExecutionPath::bailOut(checks);
return 0; return;
} }
continue; continue;
} }
@ -175,12 +175,7 @@ static const Token *checkExecutionPaths_(const Token *tok, std::list<ExecutionPa
// ; { ... } // ; { ... }
if (Token::Match(tok->previous(), "[;{}] {")) if (Token::Match(tok->previous(), "[;{}] {"))
{ {
const Token *tokerr = checkExecutionPaths_(tok->next(), checks); checkExecutionPaths_(tok->next(), checks);
if (tokerr)
{
ExecutionPath::bailOut(checks);
return tokerr;
}
tok = tok->link(); tok = tok->link();
continue; continue;
} }
@ -198,7 +193,7 @@ static const Token *checkExecutionPaths_(const Token *tok, std::list<ExecutionPa
{ {
ExecutionPath::bailOut(checks); ExecutionPath::bailOut(checks);
ExecutionPath::bailOut(newchecks); ExecutionPath::bailOut(newchecks);
return 0; return;
} }
// goto ")" // goto ")"
@ -211,7 +206,7 @@ static const Token *checkExecutionPaths_(const Token *tok, std::list<ExecutionPa
{ {
ExecutionPath::bailOut(checks); ExecutionPath::bailOut(checks);
ExecutionPath::bailOut(newchecks); ExecutionPath::bailOut(newchecks);
return 0; return;
} }
// Recursively check into the if .. // Recursively check into the if ..
@ -220,13 +215,7 @@ static const Token *checkExecutionPaths_(const Token *tok, std::list<ExecutionPa
std::list<ExecutionPath *>::iterator it; std::list<ExecutionPath *>::iterator it;
for (it = checks.begin(); it != checks.end(); ++it) for (it = checks.begin(); it != checks.end(); ++it)
c.push_back((*it)->copy()); c.push_back((*it)->copy());
const Token *tokerr = checkExecutionPaths_(tok->next(), c); checkExecutionPaths_(tok->next(), c);
if (tokerr)
{
ExecutionPath::bailOut(c);
ExecutionPath::bailOut(newchecks);
return tokerr;
}
while (!c.empty()) while (!c.empty())
{ {
newchecks.push_back(c.back()); newchecks.push_back(c.back());
@ -247,18 +236,12 @@ static const Token *checkExecutionPaths_(const Token *tok, std::list<ExecutionPa
continue; continue;
// there is no "if".. // there is no "if"..
const Token *tokerr = checkExecutionPaths_(tok->next(), checks); checkExecutionPaths_(tok->next(), checks);
if (tokerr)
{
ExecutionPath::bailOut(newchecks);
return tokerr;
}
tok = tok->link(); tok = tok->link();
if (!tok) if (!tok)
{ {
ExecutionPath::bailOut(newchecks); ExecutionPath::bailOut(newchecks);
return 0; return;
} }
} }
@ -269,12 +252,9 @@ static const Token *checkExecutionPaths_(const Token *tok, std::list<ExecutionPa
{ {
bool foundError = false; tok = check->parse(*tok, checks);
tok = check->parse(*tok, foundError, checks);
if (checks.empty()) if (checks.empty())
return 0; return;
else if (foundError)
return tok;
} }
// return/throw ends all execution paths // return/throw ends all execution paths
@ -283,7 +263,6 @@ static const Token *checkExecutionPaths_(const Token *tok, std::list<ExecutionPa
ExecutionPath::bailOut(checks); ExecutionPath::bailOut(checks);
} }
} }
return 0;
} }
void checkExecutionPaths(const Token *tok, ExecutionPath *c) void checkExecutionPaths(const Token *tok, ExecutionPath *c)

2
lib/executionpath.h
View File

@ -96,7 +96,7 @@ public:
* @param checks The execution paths. All execution paths in the list are executed in the current scope. * @param checks The execution paths. All execution paths in the list are executed in the current scope.
* @return the token before the "next" token. * @return the token before the "next" token.
**/ **/
virtual const Token *parse(const Token &tok, bool &foundError, std::list<ExecutionPath *> &checks) const = 0; virtual const Token *parse(const Token &tok, std::list<ExecutionPath *> &checks) const = 0;
/** /**
* Parse condition * Parse condition

2
test/testother.cpp
View File

@ -1040,7 +1040,7 @@ private:
" int r = *p;\n" " int r = *p;\n"
" int r2 = *p2;\n" " int r2 = *p2;\n"
"}\n"); "}\n");
TODO_ASSERT_EQUALS("[test.cpp:5]: (error) Null pointer dereference\n" ASSERT_EQUALS("[test.cpp:5]: (error) Null pointer dereference\n"
"[test.cpp:6]: (error) Null pointer dereference\n", errout.str()); "[test.cpp:6]: (error) Null pointer dereference\n", errout.str());
} }