f16d9d7d90
Issue 6175: Check lifetime of a variables stored in containers and member variables
...
Cppcheck will now warn for all cases here:
```cpp
#include <vector>
class CCluster {};
class MyClass
{ public:
std::vector<CCluster*> m_cluster;
void createCluster()
{
CCluster cl;
CCluster* pcl=&cl;
m_cluster.push_back(pcl);
}
void createCluster2()
{
CCluster cl;
m_cluster.push_back(&cl);
}
CCluster* Cluster()
{
CCluster cl;
CCluster* pcl=&cl;
return pcl;
}
CCluster* Cluster2()
{
CCluster cl;
return &cl;
}
};
```
2018-11-21 08:43:57 +01:00
7ef119cbfc
Fix FPs in lifetime checker
...
This fixes several FPs in the lifetime checker. It also fixes issue [8846](https://trac.cppcheck.net/ticket/8846 ):
```cpp
int * f(int a[])
{
return a;
}
```
2018-11-17 09:41:59 +01:00
54453c5802
Fix FP when copying pointer to string ( #1479 )
2018-11-14 06:59:25 +01:00
f096d7f474
astyle formatting
...
[ci skip]
2018-11-12 10:08:57 +01:00
0e11bb07c8
Extend lifetime analysis to pointer usage ( #1477 )
...
* Use lifetime analysis for pointers as well
* Fix issue 1143: Pointer to local array
* Update message when using pointers
* Avoid infinite loop in tracing lifetimes
2018-11-12 10:08:17 +01:00
68d6b96878
Diagnose invalid lifetimes ( #1475 )
...
* Add check for invalid lifetimes
* Fix FP with member variables
* Dont forward lifetime values in subfunction
* Update message to use out of scope
2018-11-11 16:43:54 +01:00
ee2dfb6604
Fixed #8058 (False positive returnAddressOfAutoVariable within lambda)
2018-11-11 07:52:38 +01:00
d5a478d5c5
astyle formatting
...
[ci skip]
2018-11-10 21:30:01 +01:00
1ffcc6b730
Add initial lifetime checker ( #1448 )
...
* Inital valueflow lifetime checker
* Forward values
* Add initial tests
* Fix deplicate messages
* Fix traversing nested lambdas
* Turn test case into a todo
* Skip if returning a container
* Fix FP when using references
* Add missing header
* Fix FP from broken scopes
* Fix FP with static variable
* Add test for more FPs
* Parse lambda functions
* Check for capture by value
* Add tests for using a container and lambda together
* Fix cppcheck errors
* Add test for nextAfterAstRightmostLeaf
* Add valueflow tests
* Update error message
* Check for correct lambda token
* Improve error path reporting
* Fix hang when parsing arrays that look almlost like lambdas
2018-11-10 16:40:40 +01:00
fb76ef1db1
Fixed testrunner
2018-11-03 18:59:55 +01:00
66ca03fa0c
Fixed #8826 (false negative: Invalid memory address freed)
2018-11-03 18:55:20 +01:00
43233e72b2
Fixed #8691 (False negative for uselessAssignmentArg)
2018-08-17 19:56:36 +02:00
a4fdef8d9e
Refactoring; Use Token::isUnaryOp() to clarify code
2018-07-13 23:02:52 +02:00
d0819e4792
Reuse isVariableChanged() in auto variables
2018-06-24 08:55:23 +02:00
cde63c7573
Use Variable::valueType instead of Variable::typeStartToken in auto variables
2018-06-24 08:25:19 +02:00
79ffe1d4fc
Rename _tokenizer, _settings, _errorLogger
2018-06-16 16:10:28 +02:00
f336c2efe7
Refactoring; Renamed Scope::classStart and Scope::classEnd
2018-04-27 22:36:30 +02:00
2073bd02d8
Refactoring: Use range for loop
2018-04-20 22:13:05 +02:00
a0906140a6
Suppressions: New extensible Suppressions xml format that allow more attributes. To start with it also allows symbolName.
2018-04-09 06:43:48 +02:00
c110770481
Fixed #8325 (False negative: address of auto variable being returned when assigned to another variable first)
2018-01-27 14:48:45 +01:00
cb297a00fc
Auto variables: Assign address of local variable to global pointer ( #6825 )
2018-01-25 22:50:41 +01:00
599e038282
AutoVariables: Warn when address of local array is assigned to global pointer and pointer is not reassigned
2018-01-24 21:33:58 +01:00
c4caee6b18
Updated copyright year
2018-01-14 15:37:52 +01:00
817f66d74d
Fixed crash on garbage code ( #8317 )
2018-01-07 12:52:28 +01:00
64eccd780c
Don't use static where not needed ( #952 )
2017-09-07 13:01:07 +02:00
59034e17f1
Refactoring, reuse code to skip lambda functions
2017-08-29 22:35:55 +02:00
3cd2f2d092
Don't cast bool to bool
2017-06-01 01:49:40 +03:00
28aa939d69
iwyu - include what you use
2017-05-27 04:33:47 +02:00
b1f4bd7504
Refactorization: Reimplemented Settings::_enabled as a bitfeld instead of std::set ( #7995 )
2017-04-11 11:49:26 +02:00
3c8f5b85ae
Refactorization: Allocate Token::_values (ValueFlow information) dynamically, reducing size of each token by around 10%
2017-03-27 18:48:34 +02:00
f68fa72095
Fixed #7583 (Defect: False positive '(error) Reference to temporary returned')
2017-02-26 13:41:49 +01:00
ea53bd22b7
Fixed false positive returnTempReference with operator++ ( #7874 )
2016-12-22 11:49:59 +01:00
aaf19c1e4f
Fixed #7839 (Prefix increment triggers parameter modification warning)
2016-12-19 15:25:36 +01:00
4388435ce1
Revert "checkautovariable: fix #7818 , crash when accessing nullpointer tok2->next()."
...
This reverts commit a5d32aa7a5
2016-11-20 17:21:56 +01:00
a5d32aa7a5
checkautovariable: fix #7818 , crash when accessing nullpointer tok2->next().
...
Not test case added yet because I failed to add it as .h files to testgarbage.
2016-11-16 14:46:37 +01:00
4732667488
ValueFlow: allow more value types
2016-11-13 22:33:39 +01:00
1715969f6f
Support prefix-increment/decrement in CheckAutoVariables::assignFunctionArg() ( #3177 )
2016-10-10 21:34:40 +02:00
d492500f34
#5844 False positive: returnReference fp for inner lambda function
2016-05-20 23:46:56 +02:00
d3645d874e
Mapped toomanyconfigs ,AssignmentAddressToInteger
...
,AssignmentIntegerToAddress ,CastIntegerToAddressAtReturn
,CastAddressToIntegerAtReturn ,assertWithSideEffect ,assignmentInAssert
,uselessAssignmentArg ,uselessAssignmentPtrArg
,comparisonOfFuncReturningBoolError
,comparisonOfTwoFuncsReturningBoolError ,comparisonOfBoolWithBoolError
,incrementboolean ,comparisonOfBoolWithInt ,compareBoolExpressionWithInt
,negativeIndex ,pointerOutOfBounds ,arrayIndexThenCheck
,possibleBufferAccessOutOfBounds ,argumentSize
,arrayIndexOutOfBoundsCond ,noConstructor ,copyCtorPointerCopying
,noCopyConstructor ,uninitMemberVar ,operatorEqVarError
,unusedPrivateFunction ,memsetClassFloat ,mallocOnClassWarning
,operatorEq ,thisSubtraction ,operatorEqRetRefThis ,operatorEqToSelf
,useInitializationList ,duplInheritedMember ,assignIfError
,comparisonError ,multiCondition ,mismatchingBitAnd
,oppositeInnerCondition ,incorrectLogicOperator ,redundantCondition
,moduloAlwaysTrueFalse to their CWEs ids.
2016-02-26 23:53:52 +00:00
23ad881c64
Fixed false positive returnLocalVariable ( #7180 )
2016-01-30 20:18:12 +01:00
5e10e680da
CWE: refactoring. use constants instead of magic numbers.
2016-01-25 20:01:48 +01:00
bb6880919c
CWE mapping
2016-01-15 17:07:14 +01:00
996c9244d8
Update copyright year to 2007-2016.
2016-01-01 15:34:45 +02:00
0f9d90d2be
Changed Copyrights. Removed my name.
2015-11-18 20:04:50 +01:00
71bf0f076f
CheckAutoVariables: Handle 'x-y' better in isAutoVarArray
2015-11-15 19:34:36 +01:00
4e578af603
CheckAutoVar: Improved usage of AST and ValueFlow
2015-11-15 14:48:13 +01:00
c10a10c26f
CheckAutoVariables: use ValueFlow to detect more errors when pointer aliases are used
2015-11-15 12:10:35 +01:00
ad0d23036c
Fixed some cppcheck warnings about methods that can be static/const
2015-11-14 18:43:07 +01:00
a8cf63239a
Fixed false positive autovarInvalidDeallocation if deallocting result of member function ( #6551 )
2015-11-11 16:59:31 +01:00
47f64df8aa
minor refactoring
2015-09-09 10:08:37 +02:00
59abb04042
Ticket #6596 : Address of local variables can also be assigned to pointer-pointer arguments using the ptr[] syntax.
2015-08-28 20:29:51 +02:00
7bb79562e9
Skip inner classes in CheckAutoVariables::returnReference() ( #6951 )
2015-08-26 13:31:51 +02:00
6b4a0a5ed7
Merge pull request #652 from Dmitry-Me/mergeIdenticalMAtches
...
Merge identical matches
2015-08-26 11:38:50 +02:00
77317c3373
Merge identical matches
2015-08-26 10:43:15 +03:00
6fb19b02d0
Properly differentiate arrays of pointers and pointers to arrays.
2015-08-25 21:19:19 +02:00
4d80df2f4a
Added pointer to Type to Token (similar to Token::Variable() and Token::function()):
...
- Accessible via Token::type()
- Renamed former Token::type() to Token::tokType()
- Removed SymbolDatabase::isClassOrStruct()
2015-08-15 11:19:21 +02:00
a297a03b64
Fixed false positive #6787 : Skip over lambdas in CheckAutoVariables::returnReference()
2015-08-14 13:03:07 +02:00
9627fccdc5
assignFunctionArg: don't warn when there is self assignment. There is a separate warning for self assignments.
2015-08-09 14:51:23 +02:00
f7c6140e1a
checkautovariables: Simplify some conditions
2015-07-05 17:15:13 +02:00
7481fbb028
Fixed #6506 (Properly detect calls to the deallocating free() function)
2015-06-20 21:00:54 +02:00
88f59ad7e8
Partial fix for #6656 (Allow that CWE is mapped for error message)
2015-04-25 17:48:11 +02:00
42f0955e3f
Move more setting checks out of loops and use const bools instead. Reorder a few related checks.
...
Follow up to eedcb6abcb
2015-04-10 14:31:19 +02:00
eedcb6abcb
move setting flags checks out of for loops, make them const.
2015-04-07 07:23:28 +02:00
b2835051df
Refactorization: Renamed Token::Match pattern %var% to %name%, implement new pattern %var% which is true if varId > 0.
2015-01-31 12:32:04 +01:00
36841cfa41
Better support for stream operator in CheckAutoVariables::returnReference() ( #6423 )
2015-01-31 10:12:49 +01:00
ff11ba9847
Updated copyright year to 2015
2015-01-03 12:14:58 +01:00
a3efa1e180
Fixed #4776 (FP: Assignment of function parameter has no effect outside the function, with goto)
2014-10-21 16:21:33 +02:00
80df3dc642
Disabled several checks and simplifications for C code, if they are C++-only. Do not match arguments for C code, since there can't be overloads.
2014-09-01 18:43:24 +02:00
9199dde560
Move declarations closer to where they're first used
2014-09-01 10:05:59 +04:00
ac59485e7e
Refactorized CheckAutoVariables::assignFunctionArg():
...
- Splitted message into style message (assigning non-pointers) and warning message (assigning pointers)
- Support operator++/-- (#4793 )
2014-08-04 11:45:24 +02:00
c829dff2b9
Use temp variable to omit recomputing the same value.
2014-07-17 10:44:19 +04:00
a04036337d
Fixed #5860 : Don't show returnTempReference for calculations on unknown types
2014-05-24 12:50:04 +02:00
8f79dc3ff8
Cleaned up includes and forward declarations in checkers:
...
- Removed definitely unnecessary forward declarations (e.g. "class Token"; token.h is already included by check.h, so a definition is unnecessary)
- Removed unused includes
2014-05-24 12:50:03 +02:00
6635abbe55
Improved check: Complain about returning reference to literals or reference to calculation result ( #4317 )
2014-05-22 11:39:11 +02:00
146bf11aa7
#5793 - False positive: Deallocation of an auto-variable (at reference notation)
2014-05-12 19:53:49 +02:00
d2ebd718a9
#5691 False positive: autovarInvalidDeallocation - function name 'delete' in C code
2014-05-01 07:32:37 +02:00
ea23a0467b
Fixed false positive #5732 : autovarInvalidDeallocation on pointer to array
2014-04-27 12:18:33 +02:00
6a08c27183
Fix segfault in variableIsUsedInScope() - loop variable not check against NULL
2014-03-22 11:14:11 +01:00
3f30753122
Fixed #5537 (crash: clang ./lib/Basic/FileManager.cpp , since 354e84e7c8 , /lib/symboldatabase.h:288)
2014-03-09 08:17:24 +01:00
569db24756
astyle formatting
2014-03-06 16:21:57 +01:00
354e84e7c8
Fixed #2298 (new check: passing stack-address to free())
2014-03-06 06:32:30 +01:00
875a3f47e7
Ticket #5478 : Only functions and equal operators might return a temporary.
2014-03-02 09:39:10 +01:00
23efc68dd7
use nullptr
2014-02-16 10:32:10 +01:00
fd3a8a2a18
Update copyright
2014-02-15 07:45:39 +01:00
0ef1529ba5
Fixed #5005 (false positive: (warning) Assignment of function parameter has no effect outside the function.)
2013-10-06 16:07:27 +02:00
1234ec95f0
Fixed #4998 (False positive: Address of local auto-variable assigned to a function parameter)
2013-10-06 14:23:26 +02:00
c2a8f6f59a
astyle formatting
2013-09-28 09:32:41 +02:00
d67a0add47
Ticket #5024 : Don't crash upon invalid code when checking auto variables.
2013-09-28 00:14:12 +02:00
8e84f30244
Refactorization: Make use of Function::retDef where it makes sense
2013-09-03 11:40:43 +02:00
a9a5dc0354
Updated to AStyle 2.03, require this version
2013-08-07 16:27:37 +02:00
cd5e32446f
Fixed #4641 (False positive: Address of local auto-variable assigned to a function parameter)
2013-06-13 16:19:19 +02:00
33cf561d85
Refactorized check for assigning function parameters:
...
- Fixed false negative: Check is also valid for all non-references, not only for pointers.
- Fixed false negative: Usage before assignment doesn't require bailout
- Fixed false positive #4598 caused by inadequate usage of CheckUninitVar::isVariableUsage
- Made several member functions static
2013-02-18 08:52:49 -08:00
75e20a996d
assign function pointer: Fixed false positive when pointer is used also. Ticket: #2930
2013-02-02 15:26:14 +01:00
6bb8dd605a
assign function parameters: only show warning when --enable=warning or --enable=style is used. Ticket: #2930
2013-02-02 15:08:43 +01:00
cbbb582fc9
Fixed #2930 (new check: redundant assignment of pointer function parameter)
2013-02-01 19:16:17 +01:00
94c953931d
Simplify checks by caching symbol database Variable pointer in Token
2013-01-31 20:08:48 +01:00
ec1c86c152
Symbol database: more function/variable cleanup. Ticket: #4494
2013-01-31 06:41:18 +01:00
859793731d
SymbolDatabase: Refactor findFunction handling. Ticket: #4494
2013-01-28 06:47:48 +01:00
5d5f7085bf
Updating year 2012 -> 2013 to .cpp and .h files and man page.
2013-01-01 18:29:08 +02:00
0d4b87c71e
SymbolDatabase: Improved find function functionality. Taking arguments into account
2012-10-14 17:30:37 +02:00
5a7aae31f3
speed up checkautovariables by caching commonly looked up stuff in the symbol database ( #4266 )
2012-10-12 06:15:46 +02:00
1e5d082251
Moved remaining part of c_str() checking to checkstl.cpp. Fixed false positive #4157 .
2012-09-10 15:20:38 +02:00
4fb464982c
Fixed crash reported in #4076
2012-08-22 10:17:23 -07:00
e05a597066
Fixed false negatives in checkautovariables.cpp:
...
- Detect returning temporary instances (#4076 )
- Added support for returning user defined types
2012-08-22 04:08:32 -07:00
9352e124fe
Auto variables: Speedup my fix. Use the symbol database instead of Token::findmatch.
2012-07-19 16:42:56 +02:00
17c27f51ff
Fixed #3791 (False positive: returnTempReference)
2012-07-18 07:22:29 +02:00
247d820027
Fixed #3972 : Don't issue auto variable error when the address is assigned to a reference to a non-pointer.
2012-07-13 05:21:45 -07:00
f5f63dc4a6
Message refactorization: check64bit.cpp
...
Added two articles in checkautovariables.cpp as suggested by kimmov
2012-07-08 02:38:58 -07:00
0f1cb4c98c
Message refactorization: checkassignif.cpp, checkautovariables.cpp
2012-07-07 11:31:18 -07:00
d6e2e867ea
refactoring CheckAutoVariables
2012-06-22 11:21:51 +02:00
ec00824fd3
Fixed #3357 :
...
- Print "inconclusive" tag in cli
- Fixed inconclusive handling in checkbufferoverrun.cpp
- Merged reportInconclusiveError into reportError by adding an additional parameter "bool inconclusive" which is false per default
2012-05-06 10:37:41 -07:00
746beb98bf
Added support for delete and delete[] in invalidDeallocation check ( fixes #1773 )
2012-04-26 16:44:33 +02:00
abcbe2e49f
Fixed #3594 (false positive: returning reference to auto variable)
2012-03-28 18:21:06 +02:00
1ef99e2f21
Improved checkautovariables:
...
- Added support for checking a few more code patterns
- Simplified code by using more information from the symboldatabase
- Moved redundant part of c_str-check to checkstl
Two fixes according to output of pvs studio in testsimplifytokens.cpp
2012-03-01 18:38:20 +01:00
91a01a0a0d
- checkUnsignedDivision checks for variable/variable (inconclusive). General bailout for if-statements.
...
- Make use of recently implemented symboldatabase functions (catch-support, reference-support)
- Other refactorizations
2012-01-28 12:32:28 +01:00
c273d6d31d
Refactorized checkautovariables.cpp. Removed indendation counters.
...
Fixed #3478
2012-01-08 15:32:22 +01:00
8cae17fda8
Update year to 2012
2012-01-01 01:05:37 +02:00
6a0c463ebd
#3382 (Clarify error message 'invalid deallocation')
2011-12-30 10:32:55 +01:00
fd3f384e24
astyle formatting
2011-12-26 07:58:02 +01:00
096b22c46e
#3434 (False positive Returning reference to auto variable)
2011-12-26 07:44:16 +01:00
dca03c3ce2
Remove unnecessary includes
...
Also add a unit test related to #3427
Also improve the description text in checkclass and remove unused variable.
2011-12-23 23:31:48 +02:00
767413adad
1)internal check found a 'findmatch' with simple string argument;
...
2)Style: uniform 'while (...)' when inside it there's an assignment;
3)Replace '0' with 'NULL' where there's comparison with a pointer.
2011-12-01 12:04:47 +01:00
a32b05197d
Change every 'tokAt(1)' to 'next()' and every 'tokAt(-1)' to 'previous()'.
...
Added a safety check to ensure that a 'previous()' call doesn't crash (not sure if it's needed or not).
2011-11-20 15:59:37 +01:00
11dd3c09ce
Change every 'tokAt(1)->' to 'next()->' because 'tokAt(1) == 0' is equivalent to 'next() == 0', hence the equivalent cppcheck crash.
2011-11-20 15:09:57 +01:00
42e369a4b4
Change every 'tokAt(..)->link()' to 'linkAt(..)'.
2011-11-20 14:24:27 +01:00
54adb910ec
Use Token::simpleMatch instead of Token::Match for simple patterns
2011-10-27 15:59:22 +02:00
6f8e42a5af
changed the astyle formatting flags
2011-10-13 20:53:06 +02:00
e19cbf0cdd
fix false positive introduced by previous false negative fix commit
2011-09-02 10:39:04 -04:00
833865e736
fix #3066 (False positive: Inconclusive: Assigning address of local auto-variable to a function parameter.)
2011-09-01 22:22:33 -04:00
5bad978833
fix line number in messagex for CheckAutoVariables::autoVariables
2011-09-01 20:34:31 -04:00
2667e34a07
fix again #3064 (false negative: returning address of stack variable)
2011-09-01 18:30:49 -04:00
ff690abf80
better error message for #3064 (false negative: returning address of stack variable)
2011-09-01 07:10:11 -04:00
e7dc765ece
fix #3064 (false negative: returning address of stack variable)
2011-08-31 21:36:31 -04:00
7eb43bc107
partial fix for #3030 (Improve check: Returning pointer to local array variable with '&' pointer operator)
2011-08-20 15:08:30 -04:00
9a24492a00
Fixed #2975 (False positive: Return of the address of an auto-variable)
2011-08-10 18:16:31 +02:00
2b8b0c44b2
Fixed #2969 (False positive: assign address of auto-var to function parameter, when function parameter is reassigned later)
2011-08-09 18:24:39 +02:00
2b48c7624c
Auto Variables: Reverted fix for #1514 because my idea was wrong. See ticket: #2944
2011-07-27 10:43:44 +02:00
527c1aae33
fix #2931 (another false negative in auto variables checking when function parameter is a struct)
2011-07-22 08:31:31 -04:00
84ca1902a5
fix #1514 (Improve CheckAutoVariables: assign autovariable address to effective parameter)
2011-07-21 22:37:36 -04:00
4e64d35462
fix #2926 (false negative in auto variables checking when function parameter is a struct)
2011-07-21 22:26:42 -04:00
cc1ecccd01
fix #2928 (False positive (static variable misinterpreted as auto variable))
2011-07-21 18:20:19 -04:00
31e3844f3f
Fixed #2856 (--errorlist not printing all auto-variable errors)
2011-07-21 14:50:38 +02:00
32f94a47cc
fix #2925 (False negative: auto variables - assigning address of array to function parameter)
2011-07-20 19:02:54 -04:00
bb5dfa58a1
fix #2765 (Non local address detected as address of local auto-variable)
2011-05-06 19:26:04 -04:00
ccb831d375
fix regression #1819 (False positive: auto variable assignment (unseen typedef))
2011-05-06 18:18:48 -04:00
29c73e0571
fix false positive introduced in CheckAutoVariables::autoVariables conversion to use symbol database
2011-04-26 20:16:09 -04:00
55898c0dfc
convert last check in checkautovariables to use the symbol database
2011-04-23 09:50:56 -04:00
79f0fe7d1c
refactor symbol database and checks to use list of Scope rather than list of Scope pointers
2011-03-10 19:43:29 -05:00
4b0edccec4
convert some of the checks in CheckAutoVariables to use the variable symbol table
2011-03-02 21:21:46 -05:00
1e0d538273
checkautovariables: refactor to use the symbol database
2011-02-07 19:26:34 -05:00
Paul Fultz II
Daniel Marjamäki
PKEuS
Ayaz Salikhov
Ayaz Salikhov
Matthias Krüger
Alexander Mai
Roberto Martelloni
PKEuS
Lauri Nurmi
Simon Martin
Dmitry-Me
Boris Egorov
PKEuS
PKEuS
Robert Reif
Reijo Tomperi
Daniel Marjamäki
Edoardo Prezioso
Thomas Jarosch