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
...
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
...
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 )
...
* 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
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
7373be2bfa
Add a pass in valueflow for terminating conditions ( #1323 )
...
* 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 )
...
* 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
...
[ci skip]
2018-10-21 20:28:46 +02:00
2989c44f59
Enable checking duplicate expressions across associative operators ( #1445 )
...
* 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
...
[ci skip]
2018-10-20 09:28:28 +02:00
40cb9cb1bc
Check conditions in return statements ( #1411 )
...
* 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 )
...
* 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 )
...
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 )
...
Fix false positives in unknownEvaluationOrder when using followVar
2018-09-28 08:38:24 +02:00
2f032d8fa7
Improved const correctness of local variables. ( #1396 )
...
* Improved const correctness of local variables.
* Running astyle [ci-skip].
* Removed duplicate 'const'-keyword.
2018-09-24 15:08:16 +02:00
5bebeec224
Fix issue 8775: Dont follow aliased variables ( #1390 )
2018-09-24 06:37:47 +02:00
afe09f4d7a
Temporarily comment out the followVariable() handling
2018-09-23 16:03:18 +02:00
a812da2cf1
Formatted the code.
2018-09-17 17:16:32 +02:00
4e7ed9ea6e
More robust checking for crashes in followVar ( #1375 )
...
More robust checking for crashes in followVar
2018-09-13 09:19:15 +02:00
90a29d986b
Fix issue 8730: Dont follow variables with unknown symbols ( #1374 )
2018-09-12 17:30:18 +02:00
f4f3f81e8f
Fix issue 8741: Require pure when following variables in isSameExpression ( #1373 )
2018-09-09 07:08:32 +02:00
df9df70ba7
astyle formatting
...
[ci skip]
2018-09-08 09:07:59 +02:00
cb03b9883f
Fix issue 8737: FP with identical inner condition due to followVar ( #1371 )
2018-09-07 20:16:38 +02:00
b46e25c18e
Fix issue 8730: False positive: Opposite expression on both sides of && ( #1366 )
2018-09-05 18:07:01 +02:00
08f301a0de
Reenable followVar ( #1363 )
...
Reenable followVar
2018-09-05 05:53:33 +02:00
5afb755a3c
SymbolDatabase: Fix variable matching
2018-09-04 06:39:02 +02:00
93be440f92
Fix issue 8709: crash with switch statement with followVar ( #1362 )
...
* Fix crash with switch statement
* Update comment
2018-09-03 19:54:14 +02:00
0e5fabf4dc
Dont follow volatile variables ( #1365 )
2018-09-03 19:51:48 +02:00
8353f94b93
Fix crashes in followVarExpression ( #1358 )
...
* Fix crashes in followVarExpression
* Add a regression test for issue 8717
* Skip reference declarations
2018-09-02 08:28:53 +02:00
0a9d417266
add comments
2018-09-01 16:45:14 +02:00
3cad3c901f
Another patch to temporarily disable the followVariableExpression
2018-09-01 11:39:21 +02:00
a331206b44
Temporarily disable followVariableExpressions(), there are problems that should be fixed.
2018-09-01 08:32:06 +02:00
b9cd7368f5
Typos found by running "codespell" ( #1355 )
...
* Update astutils.cpp
* Update checksizeof.cpp
2018-08-30 19:51:39 +02:00
4378327c43
astyle formatting
...
[ci skip]
2018-08-27 13:48:46 +02:00
fc135e1087
Check if member function modifies the variable ( #1350 )
...
* Check if member function modifies the variable
* Check for const pointer
* Add test for const condition
* Add more null checking
* Add todo assert for FN
2018-08-27 11:09:09 +02:00
212af76367
astyle formatting
...
[ci skip]
2018-08-18 15:45:50 +02:00
fd49112196
Avoid duplicates in the error path ( #1346 )
2018-08-18 07:32:30 +02:00
bbf876256c
Add error path to more diagnostics that rely on isSameExpression ( #1342 )
2018-08-17 09:25:07 +02:00
c5154286da
Fix issue 8687: false positive with same expression ( #1336 )
2018-08-13 12:55:41 +02:00
c3a44ce56b
astyle formatting
...
[ci skip]
2018-08-07 18:06:51 +02:00
f603b529df
Fix issue 8413: Condition is always false 'i=expr; if (i != expr) {}' ( #1295 )
...
* Follow variables when comparing same expression
* Remove assert include
* Dont follow function arguments
* Improve the checking to check more cases
* Add more tests
* Check if the variable is used inside a loop
* Follow both variables
* Only skip loops when variable is modified in scope
* Fix FP when followed variable is modified
* Dont follow arrays
* Skip pointer indirection
* Make recursive
* Improve checking more variables
* Fix test with sizeof
* Skip following operators
* Fix test when using sizeof
* Dont check every step
* Use early returns
* Update test to use a loop instead of conditional
* Add static
* Check variables are global
* Check local variables in another scope
* Fix issue with const pointers
* Distinguish between pointer indirection and multiply
* Use simple match
* Prevent crash with uniform initialization
* Use unary op and ast to detect pointer indirection
* Expand error message when expression do not match exactly
* Add errorpath to issameexpression
* Revert "Clarify warning message for 'Same expression on both sides of operator'"
This reverts commit 0e491b41a8
2018-08-07 09:32:16 +02:00
1b933f4dd1
astyle formatting
...
[ci skip]
2018-08-05 22:40:21 +02:00
b839ad60dd
Fix issue 6856: add checks in isOppositeCond when using == and < or > ( #1298 )
...
* Fix issue 6856: add checks in isOppositeCond when using == and < or >
* Move tests to testcondition
* Fix some more tests
* Fix test messages
* Remove the float check
2018-08-05 22:39:40 +02:00
1c4fb47582
astyle formatting
...
[ci skip]
2018-07-15 14:45:33 +02:00
5d1fdf7958
Fix issue 7904: Handle double nots in isSameExpression ( #1305 )
...
* Fix issue 7904: Handle double nots in isSameExpression
* Skip checking double nots in assignments
* Use ast to check for double not
2018-07-15 11:30:02 +02:00
93903d96c4
Refactoring, use Token::isUnaryOp and Token::isBinaryOp
2018-07-13 18:52:03 +02:00
03faa25d12
Conditions: Better handling of function calls
2018-07-08 15:58:04 +02:00
593f7eee38
Fixed #8624 (Crash below CheckOther::checkDuplicateExpression)
2018-06-14 22:39:26 +02:00
8d53bcfd63
Fix FP when using non-const members and also check return type of function ( #1283 )
2018-06-09 08:05:19 +02:00
4d549553b0
Small optimization in checkmemoryleak.cpp: Allow passing literals to addtoken()
...
Ran AStyle
2018-05-14 10:15:50 +02:00
7ef714b0c6
Fix FP with duplicate assignments by checking if the expression is unique ( #1223 )
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* Fix FP with duplicate assignments by checking if the expression is unique
* Use array of pointers
* Reorder scope condition
2018-05-13 20:20:55 +02:00
ce30a3ca71
astyle formatting
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[ci skip]
2018-05-11 14:49:31 +02:00
c520735009
Improve checking of size condition against empty to avoid FPs ( #1213 )
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* Improve checking of size condition against empty to avoid FPs
* Add const and todo for reverse conditions
2018-05-11 10:22:06 +02:00
f5dbfce8ff
Fix false positive with oppositeExpression when using binary op ( #1211 )
...
* Fix false positive with oppositeExpression when using binary op
* Simplify conditional
2018-05-08 20:43:57 +02:00
f2bb7397b3
astyle formatting
...
[ci skip]
2018-05-04 14:57:45 +02:00
cac68c6b81
Fix FP when using - as a binary operator ( #1201 )
2018-05-04 07:58:30 +02:00
920b553ebf
astyle formatting
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[ci skip]
2018-05-02 12:58:10 +02:00
f191a3e753
Improve checking of opposite expressions ( #1199 )
...
* Improve checking of opposite expressions
* Fix some formatting
2018-05-02 06:32:33 +02:00
121d4ff2ba
isLikelyStreamRead: when using & dont allow astParent
2018-04-22 07:30:45 +02:00
4b8769a9f5
astyle formatting
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[ci skip]
2018-04-18 17:46:31 +02:00
7ee636b934
Refactoring: Reuse isLikelyStreamRead in isVariableChanged
2018-04-18 17:46:10 +02:00
26e36a1d6b
Fix FP uninitvar when stream bool operator is used
2018-04-18 16:13:24 +02:00
219176c11c
Update isLikelyStreamRead ( #8494 )
2018-04-17 20:34:31 +02:00
c84628c28a
Fixed #8494 (False positive: serialization class overloads operator)
2018-04-17 14:23:04 +02:00
d9cbaa83d6
Extract common condition
2018-04-08 21:11:44 +03:00
95fc84a26b
Find duplicate expressions assigned to the same variable ( #1129 )
...
* Check for duplicate assignments
* Improve checking of expression
* Add more tests
* Use simple match
* Improve robustness of check
* check for null
* Reduce side effects by checking for side effects
* Improve verbose message
* Reword the error message
2018-04-08 14:43:19 +02:00
3ad6c7ebce
Refactoring, use early continue
2018-04-05 08:21:43 +02:00
e65c63e2bb
Refactor lib/astutils.cpp
2018-04-05 08:07:22 +02:00
0c6f184423
Fix false positive for opposite conditions when using different containers ( #1143 )
...
* Fix false positive for opposite conditions when using different containers
* Add additional test
2018-04-05 06:43:13 +02:00
Daniel Marjamäki
Paul Fultz II
rikardfalkeborn
Kamil Dudka
orbitcowboy
orbitcowboy
Armin Müller
PKEuS
Dmitry-Me
jrp2014