3a7ba3cd29
Add symbolic values to ValueFlow ( #3367 )
2021-07-30 21:29:35 +02:00
00eb71fd49
Remove constexpr -> const simplification ( #3346 )
2021-07-22 07:22:26 +02:00
1be5bb8bbc
Running astyle [ci skip]
2021-07-18 10:01:22 +02:00
59a1c1a9d8
Refactor: Remove variable analyzer ( #3339 )
2021-07-18 07:46:31 +02:00
3b9c399f72
Fix 10338: Hang/Crash in valueflow ( #3328 )
2021-07-07 08:20:32 +02:00
dd178c3ad9
Fix 10314: Possible nullPointerRedundantCheck false positive ( #3298 )
2021-06-19 13:59:48 +02:00
3e78e76fe8
Fix issue 10076: ValueFlow: False positive after address of var is taken 'T t = {{{&var}}};' ( #3283 )
2021-06-03 07:31:46 +02:00
5f0fe1dfe7
Fix another FP with range for macro ( #3276 )
2021-05-26 04:52:55 +02:00
e2d9aaf23b
Fix 10286: false positive: uninitvar ( #3271 )
...
* Fix 10286: false positive: uninitvar
* Remove header
2021-05-23 07:58:19 +02:00
5409fa8afd
Fix disabled valueFlowUninit tests ( #3262 )
2021-05-21 07:28:34 +02:00
f1fff5e904
Fixed #10279 (ValueFlow/TokenList: function pointer dereference and call)
2021-05-20 13:54:17 +02:00
216918756b
Fixed #10276 (FP: (style) Variable '((uint8_t*)(uint16_t)0x1000)[0]' is assigned a value that is never used.)
2021-05-18 20:35:00 +02:00
404b82fc21
unused var; fix todo test cases, redundant assignment of array in loop
2021-05-14 19:07:30 +02:00
d549770b5b
updated extracttests.py. fix syntax errors in test cases.
2021-05-13 20:21:02 +02:00
75311fba0f
Fixed #10218 (FP uninitvar with input from stringstream in for loop)
2021-05-10 19:48:07 +02:00
271acf8aee
Refactoring; Use isUnaryOp instead of simpleMatch
2021-05-10 18:18:21 +02:00
2e2d766e2b
Fixed #6766 (Improve check; struct member is assigned value that is never used)
2021-05-09 20:09:10 +02:00
32b28d568f
Refactoring; Check structured binding in isVariableChanged()
2021-05-08 20:46:46 +02:00
2f984b201a
AST; Fix wrong AST for initializer list
2021-05-04 19:02:29 +02:00
08184f4681
Fixed #10070 (FP warning: Logical disjunction always evaluates to true)
2021-05-04 13:47:09 +02:00
4907c7e3e4
Fix compiler warning, non-static function
2021-04-22 18:40:44 +02:00
691f681d86
Fix issue 10235: Regression: oppositeInnerCondition ( #3223 )
2021-04-19 09:15:03 +02:00
5de58c4ddd
added clang-tidy to CI ( #3218 )
2021-04-18 21:51:47 +02:00
563c9dd9cc
Fix issue 10208: FP: knownConditionTrueFalse in for loop with function that assigns by ref ( #3198 )
2021-04-18 21:42:27 +02:00
5077663684
Fix issue 9979: false positive: containerOutOfBounds with conditional resize ( #3136 )
2021-03-30 14:02:28 +02:00
9de976b243
Fix issue 10194: hang with followAllReferences() ( #3189 )
...
* Decrease depth faster when there is multiple returns
2021-03-30 11:22:56 +02:00
42437277dc
Update Copyright year
2021-03-21 20:58:32 +01:00
fbf63b932e
astyle formatting
...
[ci skip]
2021-02-10 11:42:00 +01:00
0e871c178f
Fix issue 10141: Errors with ref assignment (duplicateValueTenary and knownEmptyContainer) ( #3093 )
2021-02-09 15:27:46 +01:00
a81427f97f
Fix issue 10022: Logical conjunction error between two completely unrelated members ( #3094 )
2021-01-29 10:26:57 +01:00
4e1ff86bb2
use nonneg int for varid and exprid ( #3085 )
2021-01-27 19:49:13 +01:00
00707455be
10110: Fix FP knownConditionTrueFalse ( #3053 )
2021-01-25 17:23:47 +01:00
772b44d11a
Fixed compiler warnings
2021-01-23 18:04:28 +01:00
c860de8565
Fix issue 8143: valueFlowCondition: before and inside while ( #3045 )
2021-01-23 17:52:01 +01:00
a6f4fbae54
Fix issue 2741: False negative: redundant assignment of x to itself (ref = x) ( #3071 )
2021-01-22 11:00:57 +01:00
b2ed372f75
various optimizations ( #3054 )
2021-01-16 19:05:51 +01:00
b1c56d33ac
Fix issue 9133: Invalid iterator; vector::push_back, functions ( #3008 )
2021-01-11 18:47:38 +01:00
678ee00fe9
Infer variables from conditions in valueFlowSubfunction ( #3037 )
2021-01-11 08:00:13 +01:00
50cdb6cbfc
Astyle: sync windows and linux folders ( #3016 )
2021-01-06 17:13:44 +01:00
a95c931da0
Fix issue 8501: false negative: (style) Opposite expression on both sides of ( #3012 )
2021-01-05 12:07:27 +01:00
1d6c0976e5
astyle formatting
...
[ci skip]
2021-01-01 08:56:17 +01:00
ee8d5b972a
checkunusedvar: handle array element change using pointer arithmetic ( #3000 )
2021-01-01 08:06:20 +01:00
bcf6039558
Fixed #10058 (False positive: redundant assignment, there is break)
2020-12-25 09:08:15 +01:00
b8f45a5c65
Replace and fix findBreakScope with findNextTokenFromBreak
2020-12-25 08:43:14 +01:00
8bd783f820
Refactoring; Added findBreakScope and Scope::isLoopScope()
2020-12-24 22:58:31 +01:00
e12a733ee9
Fix issue 10053: False positive: Same value on both branches of ternary operator ( #2962 )
2020-12-23 13:37:28 +01:00
904d52acac
Fix issue 10004: ValueFlow: pointer value, wrongly set known value ( #2931 )
2020-12-03 07:15:31 +01:00
4330a43acb
Fixed #9933 (FP: uninitvar when reading to struct)
2020-11-11 22:47:23 +01:00
7182da5c8e
astyle formatting
2020-11-11 09:17:54 +01:00
bd7e915c20
Add generic reverse valueflow ( #2878 )
2020-11-10 16:00:55 +01:00
79bdd64689
Fix false positive memoryleak ( #2882 )
...
```
int *f() {
int *p = static_cast<int *>(realloc(nullptr, 10));
if (!!(!p)) {
return nullptr;
}
return p;
}
```
would give
```
memleak2.cpp:4:5: error: Memory leak: p [memleak]
return nullptr;
^
```
Because of the additional `!!̀ .
2020-11-10 15:59:51 +01:00
08cef9e815
Typos found by running "codespell" ( #2846 )
2020-10-15 19:24:13 +02:00
7b6d3f8061
Fix issue 9907: False positive: knownEmptyContainer after function call with :: ( #2814 )
2020-09-20 22:37:28 +02:00
c563944fdd
astyle formatting
2020-09-20 20:14:30 +02:00
857722f859
Fix issue 9711: FP knownConditionTrueFalse for variable modified via pointer ( #2813 )
2020-09-20 14:27:09 +02:00
c2e8051196
Fix issue 9904: False positive: duplicateCondition when modifying variable in lambda ( #2811 )
2020-09-18 07:44:26 +02:00
782684a7cc
Fix issue 9530: False positive: Reference to temporary returned when using initializer lists ( #2796 )
2020-09-17 08:33:16 +02:00
94850fec3f
Fix issue 9897: False positive: nullPointerRedundantCheck ( #2805 )
2020-09-14 09:17:29 +02:00
c568e8ea78
Format
2020-09-10 22:59:19 -05:00
71bc79ac28
Fix issue 9889: False positive: Using reference to dangling temporary with function object
2020-09-10 22:58:17 -05:00
f052d32e31
astyle formatting
2020-09-10 08:02:45 +02:00
5033fb4418
Fix issue 9869: False positive: knownEmptyContainer when passed to constructor
2020-09-09 22:23:42 -05:00
bfe53fce04
Fix issue 9878: false positive: multiCondition ( #2787 )
2020-09-09 15:39:36 +02:00
8d7088aa24
Fix issue 9835: False negative: Return reference to temporary with const reference
2020-09-08 18:30:45 -05:00
0c6dc84cbb
astyle formatting
...
[ci skip]
2020-09-07 10:56:02 +02:00
a4f43fc2ad
Fix issue 8234: false negative: (warning) Opposite inner 'if' condition leads to a dead code block. ( #2781 )
2020-09-07 07:53:41 +02:00
cc2bc74084
Track lifetime for lambdas with explicit capture ( #2776 )
2020-09-05 07:56:01 +02:00
32df807b22
Fix issue 9783: wrong lifetime analysis temporary assigned to object ( #2711 )
2020-09-02 07:13:15 +02:00
3e99bff764
Same expression when comparing with zero ( #2762 )
2020-08-31 08:48:48 +02:00
ac846b96d1
New check: Iterating a known empty container ( #2740 )
2020-08-22 09:16:26 +02:00
becdf20310
Fix crash in isSameExpression ( #2748 )
2020-08-22 07:05:21 +02:00
5372e93964
Fixed #9825 (redundantAssignment: Do not warn about volatile data)
2020-08-06 22:18:25 +02:00
25ad22c6af
astyle formatting
...
[ci skip]
2020-07-23 10:09:06 +02:00
df99d8aa0a
Merge pull request #2719 from pfultz2/fp-unreachable-alias
...
Fix issue 9807: False positive: ValueFlow in unreachable code, || lhs is true
2020-07-23 09:52:54 +02:00
f4a6f8ad07
Merge pull request #2720 from pfultz2/crash-type-scope
...
Fix crash when typeScope is missing
2020-07-23 09:31:59 +02:00
3480aba35b
Fix crash when typeScope is missing
2020-07-21 14:09:46 -05:00
dbb410cdae
Merge branch 'main' into condition-in-expr
2020-07-21 13:28:59 -05:00
e2a81a382f
Track reading aliases during valueflow forward
2020-07-19 23:25:35 -05:00
e0be224f4e
Merge pull request #2709 from pfultz2/fp-duplicate-cond-this
...
Fix FP of duplicateCondition when modifying the this variable
2020-07-13 21:14:58 +02:00
519f2a537a
Format
2020-07-13 13:55:45 -05:00
450bdfedf3
Fix FP of duplicateCondition when modifying the this variable
2020-07-13 12:40:01 -05:00
686a6c7862
Fixed compiler warning
2020-07-03 17:54:55 +02:00
f34ff9325a
Fixed testrunner
2020-06-29 21:53:14 +02:00
a0770f05e1
Reuse 'extractForLoopValues' in ValueFlow
2020-06-29 21:01:43 +02:00
d5b6d49d96
Fix issue 9578: false negative: (style) Condition '...' is always false
2020-06-28 15:28:08 -05:00
c42c751d61
ExprEngine; Fixed testing
2020-06-28 13:41:27 +02:00
262f44e76a
astyle formatting
...
[ci skip]
2020-06-26 12:56:56 +02:00
1bef6ed268
Another check for null
2020-06-25 19:12:01 -05:00
263a0364cc
Avoid null pointer dereference
2020-06-25 17:23:42 -05:00
720d882b69
Remove known arg
2020-06-25 17:20:20 -05:00
60c42b17a6
Fix known conditions
2020-06-25 15:46:30 -05:00
1676ad5f45
Fix issue 9710 and 9767: Use AST to get function from argument
2020-06-25 12:54:46 -05:00
c297ed8204
Better handle noreturn or throwing functions in valueflow
...
Teaching cppcheck about `BOOST_THROW_EXCEPTION` and
`boost::throw_exception`, and using noreturn information from libraries
in value flow.
This fixes false positive nullPointerRedundantCheck with the following
code:
```
void throwexception(int * buf)
{
if (!buf)
boost::throw_exception(std::bad_alloc());
*buf = 0;
}
```
2020-06-17 19:06:14 +02:00
03b41ac987
Fix issue 9718: False positive: Parameter can be declared const when written to via stream extraction operator ( #2677 )
2020-06-13 09:20:40 +02:00
120c572252
Fixed #9750 (Chained stream operation gives uninitvar error)
2020-06-06 15:24:01 +02:00
eb4754b7d9
Fix issue 9587: False positive: parameter can be declared with const ( #2667 )
2020-05-31 10:10:10 +02:00
5c3474ec5c
Renamed hasReturnFunction to hasNoreturFunction
2020-05-23 07:30:05 +02:00
8301fa8244
Fix issue 8144: valueFlowBeforeCondition: struct ( #2645 )
2020-05-21 08:47:48 +02:00
793ed68029
Refactorization: Moved code from header to source
...
- from utils.h to new utils.cpp
- from token.h to token.cpp
- from valueflow.h to valueflow.cpp
- from errorlogger.h to errorlogger.cpp
2020-05-19 08:35:12 +02:00
08ddd84780
Update copyright year
2020-05-10 11:16:32 +02:00
3e0218299b
Revert "Update copyright year"
...
This reverts commit 6eec6c4bd5
2020-05-10 11:13:05 +02:00
6eec6c4bd5
Update copyright year
2020-05-10 11:11:34 +02:00
54978847c5
Fixed #8916 (FP: followVar does not seem to handle non-const method call properly)
2020-04-18 19:54:55 +02:00
02ae71917a
Fix issue 9536: False positive: Reference to temporary returned when using operator() ( #2582 )
...
* Fix issue 9536: False positive: Reference to temporary returned when using operator()
* Add more test cases
2020-04-01 22:35:41 +02:00
921887a281
Use valueFlowGeneric for valueFlowForwardExpression ( #2537 )
2020-02-16 16:02:22 +01:00
67b495fc50
Fixed #9280 (False positive: unreadVariable on assignment to fixed address volatile struct member)
2020-02-15 17:31:47 +01:00
8c0ad6a1b9
Fixed #9555 (False positive (unreadVariable): struct is assigned a value that is never used)
2020-02-15 16:43:06 +01:00
5f4a900f88
astyle formatting
...
[ci skip]
2020-02-13 17:04:05 +01:00
7368a54629
Add generic valueflow forward analysis ( #2511 )
2020-02-13 16:27:06 +01:00
d858bfc338
Fix issue 9599: False positive: Using object that points to local variable that may be invalid ( #2530 )
...
* Fix issue 9599: False positive: Using object that points to local variable that may be invalid
* Improve tests
* Skip else
2020-02-11 11:45:10 +01:00
8fa7dd0fe0
Fix issue 9595: False positive: Using pointer to temporary doesn't account for const ref extended temporary lifetimes ( #2525 )
2020-02-10 18:01:11 +01:00
b1c6f2946a
Fix redundant FP assignment with unsigned zero ( #2521 )
...
* Refactor isNullOperand out of FwdAnalysis
* Improve isNullOperand
* Fix redundantAssignment FP with unsigned zero
* isNullValue check number
* Enhance isNullOperand to handle c++ casts
Also handle cast of NULL.
2020-02-09 11:16:08 +01:00
488bc9997c
Improve isSameExpression for same valued literals with followvar ( #2519 )
...
It allows (for example) cppcheck to detect that the lhs and the rhs are
the same in the following example:
double g()
{
double a = 1e1
return a & 10.0;
}
2020-02-03 09:35:24 +01:00
0e0d88f65e
Refactoring; Avoid template<>
2020-02-01 08:39:58 +01:00
ff9c04dc28
Improve isSameExpression for literals ( #2514 )
...
Improve isSameExpression() for literals with same value but different
representation, for example the following different ways of
representing 9 as double: 9.0, 0.9e1 and 0x1.2p3.
With this change, cppcheck can (for example) correctly detect that the
else if statements are always false in the following example:
void f(double x) {
if (x < 9.0) {}
else if (x < 0x1.2p3) {}
else if (x < 0.9e1) {}
}
2020-02-01 07:22:41 +01:00
01e0a61ebe
Break loops earlier
2020-01-16 18:37:10 +03:00
e1a97c524d
Fix issue 9554: False positive: The address of local variable 'x' is accessed at non-zero index. ( #2470 )
...
* Fix issue 9554: False positive: The address of local variable 'x' is accessed at non-zero index.
* Format
* Remove unnecesary condition check
2020-01-04 11:39:52 +01:00
1e0f8ae9b4
Running astyle [ci skip].
2020-01-04 00:06:27 +01:00
dd05839a7e
Fix false positives in knownConditionTrueFalse when using expressions with const variables ( #2469 )
2020-01-03 19:35:28 +01:00
235ef0a01e
Fixed #9420 (False positive - redundantInitialization)
2019-12-18 19:39:23 +01:00
49d6bfbd7b
Fixed crash in harfbuzz found by daca@home
2019-11-12 18:22:11 +01:00
c75bbbe253
Fix issue 9404: False positive: Either the condition 'if(x)' is redundant or there is possible null pointer dereference: a->x ( #2322 )
...
* Fix issue 9404: False positive: Either the condition 'if(x)' is redundant or there is possible null pointer dereference: a->x
* Use simpleMatch
* Add a test case for the FP
* Check if expression is changed
* Check for no return scope
* Use simpleMatch
2019-11-08 08:11:41 +01:00
d1f225b8ee
Fix issue 9201: FP: returnDanglingLifetime on pointer to variable of static struct ( #2303 )
...
* Fix issue 9201: FP: returnDanglingLifetime on pointer to variable of static struct
* Fix capture of non-local variables in lambdas
2019-11-05 07:10:32 +01:00
c38bbb75e4
Fix issue 9448: Check for temporaries from library function calls ( #2312 )
2019-11-03 22:02:10 +01:00
28182084f2
Fix crash when there are too many nested scopes. Bail out after 1000 nested scopes. The crash was in gcc and was seen with daca@home.
2019-11-02 18:23:10 +01:00
694d147097
Refactor ProgramMemory and PathAnalysis ( #2311 )
...
* Traverse conditions for container size
* Move program memory to seperate file
* Revert "Traverse conditions for container size"
This reverts commit 914783769f
2019-10-30 17:57:46 +01:00
1ef85f9229
Fix issue 9432 and 9433: False positive: Reference to temporary returned ( #2302 )
2019-10-29 19:12:58 +01:00
68ea60d207
Try to make Travis happy
2019-10-20 07:44:56 +02:00
4943771e41
Fix #9262 (False positive on variable assignment when putting enum in namespace)
2019-10-19 21:41:50 +02:00
99ef64459b
Fixed #9344 (FP redundantAssignment related to increasing index variable for vector)
2019-10-17 18:31:05 +02:00
bf5c90a2be
Fix issue 9409: FP returnTempReference ( #2266 )
...
* Fix issue 9409: FP returnTempReference
* Format
2019-10-13 19:12:46 +02:00
a5c6ae1e08
Fix issue 9400: FP returnTempReference - triggered by cast ( #2259 )
2019-10-10 06:52:11 +02:00
4eb4762d95
Extend lifetime checking to temporaries ( #2242 )
...
* Use lifetimes to check for returning reference to temporaries
* Check for dangling temporaries
* Check for unknown types for returining by reference
* Remove old returnTemporary check
* Format
* Check for deref op
* Ternary operator return an lvalue reference
* Warn when returning temporaries from member functions
* Improve handling of pointer to function
* Extend lifetimes of const references
2019-10-08 09:28:39 +02:00
997803869d
Forward values after assignment in valueFlowReverse ( #2226 )
...
* Forward values after assignment in valueFlowReverse
* Rename variables
* Format
2019-10-03 09:58:57 +02:00
f05e21efa8
Formatted the code, there are no functional changes [ci skip].
2019-10-01 08:39:08 +02:00
166bd2bafc
Fix issue 2153: valueFlowAfterCondition: struct member ( #2228 )
...
* Fix issue 2153: valueFlowAfterCondition: struct member
* Fix null pointer dereference
* Formatting
* Check for another null pointer
* Initialize variables
* Remove redundant condition
* Format
* Add missing initialization to copy constructor
* Format
2019-09-30 21:04:43 +02:00
6453a85363
Fix the following compilation error on VC142 : ( #2224 )
...
Error C2039 'inserter': is not a member of 'std' cppcheck C:\Users\simon\__Si\git_projects\cppcheck\lib\astutils.cpp 1229
2019-09-28 06:24:32 +02:00
b55c587ab2
astyle formatting
...
[ci skip]
2019-09-26 10:32:49 +02:00
597d0fa35b
Support expression in valueFlowAfterCondition ( #2219 )
...
* Add valueFlowForwardExpression function to forward values of an expression
* Use token for expression
* Fix name in bailout message
* Handle expressions
* Add more tests for more expressions
* Add more tests
* Solve the expression if possible
* Formatting
2019-09-26 10:32:25 +02:00
068b0b246c
Fix issue 9352: FP constParameter and constVariable for auto& in combination with ternary ?: operator ( #2173 )
2019-09-13 08:33:30 +02:00
ba037837c9
Track lifetime across multiple returns
...
This will now warn when doing something like this:
```cpp
template <class T, class K, class V>
const V& get_default(const T& t, const K& k, const V& v) {
auto it = t.find(k);
if (it == t.end()) return v;
return it->second;
}
const int& bar(const std::unordered_map<int, int>& m, int k) {
auto x = 0;
return get_default(m, k, x);
}
```
The lifetime warning is considered inconclusive in this case.
I also updated valueflow to no tinject inconclusive values unless `--inconclusive` flag is passed. This creates some false negatives because library functions are not configured to not modify their input parameters, and there are some checks that do not check if the value is inconclusive or not.
2019-09-11 19:25:09 +02:00
bee30b0ca2
astyle formatting
...
[ci skip]
2019-09-10 19:42:17 +02:00
dc0b3527ad
Fix issue 9311: False positive duplicateCondition "same if condition" with pointer inside array of struct ( #2166 )
...
* Check for typeOf through an array
* Handle array constructors
* Format
* Fix compile error on gcc 4.8
2019-09-10 19:41:35 +02:00
2595b82634
Fix issue 9348: FP uninitvar for pointer passed to memcpy ( #2167 )
2019-09-10 19:40:08 +02:00
27ebff7ae4
Add deeper analysis of when a function changes a containers size ( #2149 )
...
* Add deeper analysis of when a function changes a containers size
* Fix issues
* Track addressOf
2019-09-06 21:18:45 +02:00
70cad280ea
Fix issue 9319: FP knownConditionTrueFalse related to aggregate initialization of struct ( #2147 )
2019-09-05 19:36:45 +02:00
e657cf4073
Fix issue 9320: False positive knownConditionTrueFalse related to truncation ( #2144 )
2019-09-05 15:15:58 +02:00
0b9e823fc8
Fix issue 9305: False positive uninitvar - struct initialized via function ( #2123 )
2019-08-30 18:32:45 +02:00
03fe6795bf
Fix issue 9302: FP uninitvar - struct accessed via pointer ( #2121 )
2019-08-29 08:38:50 +02:00
324e5e581b
Redundant assignments: Fix false positive when reassignment expression contains assembler
2019-08-24 20:15:52 +02:00
c0a8d628b9
Fix issue 6010: Uninitialized inner struct ( #2098 )
...
* Fix issue 6010: Uninitialized inner struct
* Show to root variable that is unitialized
* Warn on pointer dereferences
2019-08-23 06:23:20 +02:00
3aef0c9bd3
Fix issue 8715: regression uninitvar not detected ( #2092 )
2019-08-16 07:48:54 +02:00
ef714225bb
Use library to track container lifetimes
2019-08-15 21:14:54 +02:00
af214e8212
Fix issue 8825: ValueFlow: uninitialized struct member ( #2087 )
...
* Pass uninit value across pointers
* Add more testing
2019-08-15 10:44:55 +02:00
785cc69644
Typos found by running "codespell" ( #2072 )
2019-08-08 21:05:28 +02:00
bd02ca5ccb
Fix issue 9207: Not detected 'always true' and unreachable code
2019-08-08 07:46:47 +02:00
3ad9d6a1ad
Make the code a bit more robust
2019-07-29 20:57:16 +02:00
607b3daca8
ValueFlow: Improve bailout for structs etc in loops
2019-07-29 15:51:48 +02:00
ee28a45db4
Fix issue 9235: new crash in astutils isVariableChanged from endless recursion ( #2040 )
2019-07-26 07:03:21 +02:00
bbcffce529
Fixed #9062 (False positive "condition is always true")
2019-07-24 19:16:35 +02:00
6c82685fbf
Fixed compiler warnings
2019-07-24 11:01:38 +02:00
bb52a63c4e
Add check for const variables
...
When a local reference is declared, this will check if that local reference can be declared as `const`.
2019-07-24 09:59:01 +02:00
a08a9c1349
Switch to use lifetime analysis for iterators and pointers to invalid containers
...
This will diagnose more issues such as:
```cpp
void f(std::vector<int> &v) {
auto v0 = v.begin();
v.push_back(123);
std::cout << *v0 << std::endl;
}
```
2019-07-18 10:56:44 +02:00
9973db3a71
Modernize: Use enum class for Library::Action and Library::Yield
2019-07-17 11:39:30 +02:00
0014fe880e
Mark members and arguments with 'nonneg'
2019-07-14 12:22:33 +02:00
5d853bcb58
Avoid 'unsigned' in astutils
2019-07-13 16:13:21 +02:00
b0d10273ed
Fix issue 3695: Handle class pointers
...
This switches to use lifetime analysis to check for assigning to non-local variables:
```cpp
class test
{
public:
void f()
{
int x;
this->ptr = &x;
}
protected:
int *ptr;
};
```
2019-07-07 10:16:19 +02:00
d6f6e68fa2
Fix false positive 9167 ( #1904 )
...
Skip returns from local class/struct definition in FwdAnalysis.
2019-07-03 08:17:06 +02:00
beea7fa8d2
Token::index(): Created Token member that indicates the Token position in the token list. It can be used to quickly check if tok1 precedes tok2.
2019-06-21 22:16:23 +02:00
44d6066c6f
FP on assignment through pointer ( #1887 )
...
* Fix FP when assigning through pointers
* Add test case for false positive
cppcheck would faulty warn:
"Condition '*b>0' is always true"
2019-06-17 21:25:15 +02:00
5d10b57b04
Fixed #8997 (False positive redundantAssignment when pointer is updated with +=)
2019-05-31 12:24:31 +02:00
79ab9cf84d
Running astyle [ci skip].
2019-05-31 10:14:52 +02:00
108cdaa485
Fix FP with unreadVariable ( #1859 )
2019-05-31 08:06:36 +02:00
ada881ccdf
Fix #9130 (FP memory leak with NULL pointer cast) ( #1839 )
2019-05-18 06:22:25 +02:00
fd4e371091
Refactoring: Use stl algorithm
2019-04-28 07:40:00 +02:00
253f2c9e9d
Fixed #9043 (false positive & regression: Variable '*s' is reassigned a value before the old one has been used.)
2019-04-16 19:07:26 +02:00
a90caa7e5a
Fix issue 9006: False positive: Return value of function std::move() is not used.
...
This is trying to fix the issue by fixing the ast and symbol database. First, the ast nodes will be created for the init list and the symbol database will not mark it as a scope. I am not sure if this is the correct approach as I dont really understand how the AST part works.
It did change the AST for `try {} catch (...) {}` but that is because it incorrectly treats `try {}` as an initializer list.
2019-04-15 06:37:27 +02:00
51b64191e5
Fixed slow checking in FwdAnalysis
...
Credit to OSS-Fuzz for reporting this!
2019-03-30 14:22:24 +01:00
29815b2dd8
Fix #8922 (SIGSEGV below exprDependsOnThis - stack overflow?) ( #1761 )
...
This limits the recursion depth as a last line of defense to avoid stack
overflows when there are really huge arrays.
See https://trac.cppcheck.net/ticket/8922
2019-03-26 18:57:01 +01:00
7995b2fb86
getArguments: Avoid too deep recursion in array initialization
2019-03-24 11:51:28 +01:00
418eb43d45
Fixed #9032 (False-positive detection of reassigned value before used for pointer parameter)
2019-03-23 19:01:02 +01:00
774464eabb
Fix issue 8996: False positive duplicateCondition
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This fixes issue 8996 by improving the alias checking by using lifetime analysis. It also extends the lifetime checker to handle constructors and initializer lists for containers and arrays.
2019-03-19 06:25:10 +01:00
0934577dda
Library configuration: function argument direction fixes and enhancements ( #1722 )
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* std.cfg: Add further argument directions (in, out, inout).
* testlibrary.cpp: Add test for function argument direction configuration.
* std.cfg: runastyle and add some more direction configurations.
* library.h: Add documentation for function argument direction enum.
* Do not use "direction" library information for pointer arguments.
Also fix further unmatched uninitvar messages in std configuration
tests.
* std.cfg: Add more argument direction configurations.
* test/cfg/std.c: Add test for argument direction configuration.
* astutils.cpp: Only ignore pointer arguments for out/inout arguments.
* library.h: Use suggested documentation for argument direction enum.
2019-03-04 22:57:40 +01:00
9a5fcddb5d
Library configuration: Enable configuring the direction of arguments. ( #1717 )
...
This enhances the library configuration so the direction of function
arguments can be specified (in, out, inout).
isVariableChangedByFunctionCall() uses this information now to avoid
guessing.
2019-03-01 15:47:08 +01:00
845c407ab7
Fixed pattern matching in isVariableChanged() to handle normal token list better
2019-03-01 13:23:03 +01:00
4f5a426fe5
Improved isVariableChangedByFunctionCall, better logic when parameter might be passed by reference
2019-02-28 17:02:46 +01:00
494dd2ba3a
Revert "Improved isVariableChangedByFunctionCall, better logic when parameter might be passed by reference"
...
This reverts commit 14a0031e88
2019-02-28 15:56:25 +01:00
14a0031e88
Improved isVariableChangedByFunctionCall, better logic when parameter might be passed by reference
2019-02-28 10:26:47 +01:00
857681a049
Make quick fix for uninitialized variable false positive. Will look more at this soon.
2019-02-28 09:52:52 +01:00
941dd79f0d
Fix FP issue 8986: constArgument check warns for elements of const array ( #1683 )
2019-02-22 06:39:59 +01:00
bd7790fd8c
Update copyright year
2019-02-09 07:24:06 +01:00
d7c20b15e7
Fix FP with const argument when doing a variable and cast ( #1649 )
2019-02-07 14:59:09 +01:00
8c07be136a
Fixed #8949 (False Positive: Variable 'f' is assigned a value that is never used.)
2019-01-22 21:16:27 +01:00
d50c3de740
Remove inline suppression and fix false positive.
2019-01-13 07:59:41 +01:00
2b1b8f8fe9
Fix Cppcheck warnings
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[ci skip]
2019-01-12 18:29:08 +01:00
0f9ce5edd5
Fixed #8365 (False positive on memory leak when assigned inside if statement)
2019-01-08 20:54:39 +01:00
2b63997c2c
Fixed #8928 (false positive: (style) Variable 'x' is assigned a value that is never used.)
2019-01-02 20:23:02 +01:00
236c88151f
Fixed #8926 (false positive: (style) Condition 's.x<=y' is always true)
2019-01-02 18:05:55 +01:00
115be7dfc8
ValueFlow: better FwdAnalysis for complex expressions
2019-01-01 18:23:47 +01:00
a73e989d1a
isConstVarExpression: Fix FPs when there is C++ cast
2019-01-01 11:34:44 +01:00
ed514644b8
Renamed FwdAnalysisAllPaths to FwdAnalysis
2018-12-31 18:00:47 +01:00
141ce7cd63
ValueFlow: Use FwdAnalysisAllPaths in ValueFlow to track complex expressions
2018-12-31 17:05:46 +01:00
036fcf7827
Fix warnings ( #1541 )
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* Fix reorder warning
* Fix override warnings
Clang warns about missing overrides.
* Remove unused function
* Add missing argument to function calls
2018-12-28 12:59:05 +01:00
6fef02498c
Fixed #7263 (False negative: redundant assignment using +=)
2018-12-27 17:27:53 +01:00
ddbe5c129c
Clarify FwdAnalysis. It is useful for checks that need data flow analysis of ALL paths.
2018-12-25 11:56:06 +01:00
e2c433a0f8
Fixed #8914 (False positive with unary_function argument)
2018-12-19 19:43:05 +01:00
bf4e850e11
Fixed #4475 (New check: struct member is assigned a value that is not read)
2018-12-17 15:40:15 +01:00
858d9a18a7
Fixed #3857 (false negative: (style) Variable 'var' is assigned a value that is never used)
2018-12-17 15:16:47 +01:00
9b973e652c
Issue 8830: New check: Function argument evaluates to constant value
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Add a check for function arguments that can be constant:
```cpp
extern void bar(int);
void f(int x) {
bar((x & 0x01) >> 7); // function 'bar' is always called with a '0'-argument
}
```
2018-12-17 06:04:24 +01:00
c8d688607a
Fixed #8901 (Unused value: const variable initialization)
2018-12-16 19:01:05 +01:00
21eb1c5e22
FwdAnalysis: Fix false negatives for struct members
2018-12-16 18:32:34 +01:00
46a0172480
FwdAnalysis: fix FP in loop
2018-12-16 16:43:04 +01:00
97d2075007
FwdAnalysis: better handling of loops
2018-12-16 11:42:11 +01:00
3af0d73f82
Unused value: Fixed false negatives for loops
2018-12-16 11:18:37 +01:00
1bfe98447a
FwdAnalysis: Tweak possiblyAliased
2018-12-15 11:54:00 +01:00
37416010ef
Unused value: Fix false positive (ast, {})
2018-12-14 18:56:09 +01:00
be6782d386
Fix FP 8891: Incorrect return scope when using uniform initialization
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This fixes the FP in:
```cpp
std::string f(const std::string& data)
{
if (data.empty())
return {};
data[0];
}
```
2018-12-14 18:31:10 +01:00
8464085535
UnusedVariables: Fix FP for unknown variable
2018-12-13 21:37:21 +01:00
092d434f91
UnusedVar: Fix FP for array arguments
2018-12-13 21:08:18 +01:00
1f27cd56c0
FwdAnalysis; Code cleanup, isNullOperand
2018-12-13 21:01:33 +01:00
0b4e08cac9
Use FwdAnalysis in UnusedVar. This is still work-in-progress. Merging to master branch so it can be tested.
2018-12-13 18:52:56 +01:00
452318dfa4
Remove FwdAnalysis::reads: It is not finished
2018-12-04 18:46:23 +01:00
c03c262058
Preparing FwdAnalysis for ValueFlow usage where we want to fetch read locations
2018-12-02 18:29:16 +01:00
d8fada6702
Refactoring FwdAnalysis
2018-12-02 17:42:18 +01:00
6734571f06
Refactoring: Create FwdAnalysis class in astutils
2018-12-02 17:01:52 +01:00
ecb3c04fba
astutils: Add function that visits nodes in AST tree
2018-11-23 06:53:43 +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
0e11bb07c8
Extend lifetime analysis to pointer usage ( #1477 )
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* 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 )
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* 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
d5a478d5c5
astyle formatting
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[ci skip]
2018-11-10 21:30:01 +01:00
1ffcc6b730
Add initial lifetime checker ( #1448 )
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* 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
7373be2bfa
Add a pass in valueflow for terminating conditions ( #1323 )
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* Add valueflow for terminating conditions
* Add valueflow test
* Dont check for same expressions for now to avoid double diagnostics
* Check nesting
* Add more tests
* Ensure conditions happen in order
* Check for null
* Add error path
* Support same expression check as well
* Use early continue
* Skip checking the same token
* Avoid double condtion diagnosis
* Fix FP when in switch statements
* Fix FP when time function
* Skip conditional escapes
* Use simpleMatch
* Fix naming
* Fix typo
2018-11-07 06:49:07 +01:00
88008fedb1
findLambdaEndToken handle explicit type ( #1458 )
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* findLambdaEndToken: Add tests
* Add handling of explicit return in findLambdaEndToken()
* Use AST in findLambdaEndToken()
* Fix ast when lambda is mutable
2018-10-31 12:36:08 +01:00
d206047b84
Fixed #8794 - Memory leak false positive triggered by !(x != NULL) ( #1450 )
2018-10-26 06:21:45 +02:00
044c4b7fbb
Refactoring: Use range for loop
2018-10-25 06:14:27 +02:00
b8e8b12783
Fixed #8797 (exprDependsOnThis handle method call in non-inline method)
2018-10-24 20:17:00 +02:00
64fbffc90d
astyle formatting
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[ci skip]
2018-10-21 20:28:46 +02:00
2989c44f59
Enable checking duplicate expressions across associative operators ( #1445 )
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* Enable checking duplicate expressions across associative operators
* Remove bitshift operators and check for streamRead
2018-10-21 07:09:20 +02:00
e2ea8bc2b0
astyle formatting
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[ci skip]
2018-10-20 09:28:28 +02:00
40cb9cb1bc
Check conditions in return statements ( #1411 )
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* Identify return conditions in multiconditions
* Improve error messages
* Check return statements are always true or false
* Add more tests for FPs
* Fix FP when returning const like variables
* Fix FP when returning pointers or classes
* Fix FP with member variable access
* Check non-local variables
* Use simplematch
* Check for null
2018-10-18 21:01:47 +02:00
58b21e3071
Refactoring: Reuse Token::expressionString() logic for finding right-most leaf in tree
2018-10-18 12:09:55 +02:00
16c62281d0
Use followVar in checking duplicateBranch ( #1423 )
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* Use isSameExpression for duplicate branches
* Add errorPath
* Add another test
2018-10-18 11:56:23 +02:00
f961324d45
Fixed #8735 (FP oppositeInnerCondition - regression)
2018-10-07 18:30:29 +02:00
e170a45230
Enable followVar for opposite expressions ( #1404 )
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Enable followVar for opposite expressions
2018-10-04 21:17:47 +02:00
1fe1ec09a8
Reenable follow var for logical conjunction ( #1400 )
2018-10-01 14:40:03 +02:00
3a186b5bff
astyle formatting
2018-10-01 11:53:32 +02:00
4ed22f1ff8
Fix some FPs in mismatchingContainerExpression ( #1402 )
2018-09-30 14:49:58 +02:00
f65cf220ba
Fix false positives in unknownEvaluationOrder when using followVar ( #1391 )
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Fix false positives in unknownEvaluationOrder when using followVar
2018-09-28 08:38:24 +02:00
2f032d8fa7
Improved const correctness of local variables. ( #1396 )
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* Improved const correctness of local variables.
* Running astyle [ci-skip].
* Removed duplicate 'const'-keyword.
2018-09-24 15:08:16 +02:00
Paul Fultz II
orbitcowboy
Daniel Marjamäki
Oliver Stöneberg
IOBYTE
Ken-Patrick Lehrmann
Rikard Falkeborn
miltolstoy
Armin Müller
PKEuS
Dmitry-Me
SimonCornell1
Sebastian
Kamil Dudka
orbitcowboy