ad8abdb0c3
Add impossible values to ValueFlow ( #2186 )
...
* Add impossible category
* Replace values
* Try to adjust known values
* Add ! for impossible values
* Add impossible with possible values
* Remove contradictions
* Add values when the branch is not dead
* Only copy possible values
* Dont bail on while loops
* Load std lib in valueflow
* Check for function calls
* Fix stl errors
* Fix incorrect impossible check
* Fix heap-after-use error
* Remove impossible values when they are lowered
* Show the bound and remove overlaps
* Infer conditions
* Dont push pointer values through dynamic_cast
* Add test for dynamic_cast issue
* Add shifttoomanybits test
* Add test for div by zero
* Add a test for issue 9315
* Dont make impossible value inconclusive
* Fix FP with shift operator
* Improve handleKnownValuesInLoop for impossible values
* Fix cppcheck warning
* Fix impossible values for ctu
* Bailout for streams
* Check equality conditions
* Fix overflows
* Add regression test for 9332
* Remove duplicate conditions
* Skip impossible values for invalid value
* Check for null
* Rename bound to range
* Formatting
2019-09-20 15:06:37 +02:00
3e0d1141d3
Fix issue 9277: FP: Dont warn for knwon conditions in if constexpr ( #2085 )
2019-08-16 07:56:39 +02:00
5dc4f44091
Replace 'unsigned' with 'nonneg' in checkcondition
2019-07-16 08:21:25 +02:00
0eedcfc160
Fixed #7464 (warn about opposite if and else-if conditions)
2019-06-30 23:26:49 +02:00
175070ca50
Revert "Fixed #8938 (FP identicalInnerCondition)"
...
This reverts commit 0edf0b5628
2019-06-22 21:57:19 +02:00
c4325bbec3
Fix issue 9103: False positive duplicateConditionAssign ( #1808 )
...
* Fix issue 9103: False positive duplicateConditionAssign
* Update conditional message
2019-04-26 12:30:41 +02:00
76e13c45c7
temporarily disable duplicateConditionalAssign
2019-04-25 07:44:19 +02:00
0edf0b5628
Fixed #8938 (FP identicalInnerCondition)
2019-04-22 16:54:59 +02:00
103002578d
Add check for duplicate condition and assignment ( #1799 )
...
* Add check duplicate condition and expression
* Format
* Add assign token
* Add to classInfo
* Change note messages
2019-04-18 20:20:24 +02:00
e47b6bf862
Revert quick fix: 0ace50204b (comments)
2019-04-09 08:38:08 +02:00
0ace50204b
Fixed a crash on garbage code. The test input was found by afl_cppcheck (type2). Unforunately, the cppcheck-fuzzer-client was crashing only when executing the binary input from afl-fuzz. Using the translated-input (C-code) did not lead to crash. I tested it with activated address/undefined behaviour sanitizer as well as non-instrumented source code. Since the translated output is too long (164 lines), i will not add it the testgarbage.cpp.
2019-04-07 13:27:33 +02:00
4ce6de39c5
CheckCondition: Moved checks to 'normal'
2019-03-09 22:00:59 +01:00
0ee3f678b5
Fix issue 8987: False positive knownConditionTrueFalse ( #1678 )
2019-02-20 15:28:31 +01:00
bd7790fd8c
Update copyright year
2019-02-09 07:24:06 +01:00
4e147a4c59
Add a check for duplicate if statements
...
This will warn for this:
```cpp
int f(int val)
{
int i = 0;
if( val & 0xff)
i = 1;
if( val & 0xff)
i = 1;
return i;
}
```
2019-01-09 20:41:01 +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
b049a31e7c
Refactoring; Use visitAstNodes
2018-11-23 20:41:39 +01:00
54453c5802
Fix FP when copying pointer to string ( #1479 )
2018-11-14 06:59:25 +01:00
d5a478d5c5
astyle formatting
...
[ci skip]
2018-11-10 21:30:01 +01:00
a3e717bea9
Use functions instead of comparing with enum ( #1471 )
...
* Use isComparisonOp() instead of enum
* Use isAssignmentOp() instead of enum
2018-11-09 06:30:41 +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
fafd0742d4
Fix FPs with return conditions ( #1455 )
...
* Fix 8815: FP with identical inner conditions
* Fix issue 8801: FP when not returning a bool
* Fix FP
* Add missing semicolon
* Move returnVar
2018-10-31 09:47:48 +01:00
86782af43c
Fix Cppcheck warning
2018-10-25 07:15:32 +02:00
2348dcde6c
#8801 : Quick fix for false positives
2018-10-24 19:57:50 +02:00
64fbffc90d
astyle formatting
...
[ci skip]
2018-10-21 20:28:46 +02:00
edde0eedaa
Fix FP issue 8801: Condition 'a+b' is always true ( #1444 )
2018-10-21 08:04:00 +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
1fe1ec09a8
Reenable follow var for logical conjunction ( #1400 )
2018-10-01 14:40:03 +02:00
2c91b95d2a
Reenable followVar for multicondition ( #1401 )
2018-10-01 14:34:55 +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
df9df70ba7
astyle formatting
...
[ci skip]
2018-09-08 09:07:59 +02:00
5a2362b2a0
Fix issue 8738: Dont warn about multiconditions when value is known ( #1369 )
2018-09-07 15:02:34 +02:00
2da958efb5
Fix issue 8722: Avoid duplicate messages due for followVar ( #1367 )
2018-09-06 06:55:36 +02:00
ab55b9eccb
Check for same expression in condition check to avoid duplicate messages ( #1359 )
2018-09-02 08:43:17 +02:00
bbf876256c
Add error path to more diagnostics that rely on isSameExpression ( #1342 )
2018-08-17 09:25:07 +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
9895ea5ff2
Fix issue 470: Condition is always true or false on logical operators ( #1294 )
...
* Fix issue 470: Condition is always true or false on logical operators
* Dont warn on literals
* Compute logical operators using valueflow
* Fix FP when using literals
* Always warn on subconditions that are always true
* Use percent matches first
* Add test for logical operators
* Check if parent is null
2018-07-23 08:51:59 +02:00
77b653bf94
Clarify warnings when char literals are converted to bool in conditions
2018-07-21 18:40:06 +02:00
c60763bc14
Refactoring; Use range for loop
2018-07-14 08:18:10 +02:00
5b1d96b346
Clarify code with Token::isUnaryOp()
2018-07-14 08:04:08 +02:00
2b125e013a
Code refactoring, no functional change intended
2018-07-13 09:20:53 +02:00
42f075c3fa
Skip literals for always true/false ( #1304 )
2018-07-12 23:06:47 +02:00
79ffe1d4fc
Rename _tokenizer, _settings, _errorLogger
2018-06-16 16:10:28 +02:00
45379a3aa6
Updated copyright year for modified files
...
[ci skip]
2018-06-10 22:07:21 +02:00
e571e598b6
Fix false positive with inner conditions when using pointers ( #1195 )
2018-04-28 18:56:13 +02:00
f336c2efe7
Refactoring; Renamed Scope::classStart and Scope::classEnd
2018-04-27 22:36:30 +02:00
3d78320d04
CheckCondition: Use isLikelyStreamRead
2018-04-22 09:48:54 +02:00
7ee636b934
Refactoring: Reuse isLikelyStreamRead in isVariableChanged
2018-04-18 17:46:10 +02:00
1b4f4d7130
Fixed #8495 (False positive: boolean result used in bitwise operation when & is overloaded)
2018-04-17 22:14:17 +02:00
b15cc3f236
Refactorization: Replace several push_back-sequences by initializer lists
2018-04-09 09:54:39 +02:00
795b9f5e0f
astyle formatting
2018-04-08 09:25:59 +02:00
b85dda77da
Add a check for identical inner conditions ( #1156 )
2018-04-08 08:13:44 +02:00
17bd2f0c72
Refactor lib/checkcondition.cpp
2018-04-05 15:53:49 +02:00
b6504c70ca
Improve constness
2018-04-04 21:51:31 +02:00
c4caee6b18
Updated copyright year
2018-01-14 15:37:52 +01:00
5a642ac35e
Omit unneeded computations
2017-12-26 02:07:24 +03:00
8851fd64a6
Break loop early
2017-12-21 03:13:00 +03:00
a8700f5622
Remove redundant parts of conditional expressions ( #988 )
...
All issues were found with PVS-Studio:
V560 A part of conditional expression is always true: tok. astutils.cpp 407
V560 A part of conditional expression is always true: size > 0. checkbufferoverrun.cpp 709
V547 Expression 'secondTrue' is always true. checkcondition.cpp 1013
V547 Expression 'firstTrue' is always true. checkcondition.cpp 1020
V560 A part of conditional expression is always true: !scan. checkio.cpp 1036
V560 A part of conditional expression is always true: scope->function. checknullpointer.cpp 395
V560 A part of conditional expression is always true: tok2. checkstl.cpp 268
V560 A part of conditional expression is always true: par. tokenize.cpp 9440
V547 Expression '!erased' is always true. symboldatabase.cpp 3990
2017-11-03 10:39:57 +01:00
539258f7a3
Fix FP for pointer addition checker
2017-10-22 23:13:12 +02:00
28cfee2d4f
Fixed #8250 (New check: Pointer calculation result cant be NULL unless there is overflow)
2017-10-22 14:32:54 +02:00
4700b75ded
Clarify error message 'condition is always true/false'
2017-10-16 22:05:00 +02:00
696c5b8100
Reduce duplication, omit building unneeded string
2017-09-18 03:06:35 +03:00
7d6ef71c4d
More selective match pattern
2017-09-18 02:45:02 +03:00
927b14b60f
Fixed #8217 (Crash in isVariableChanged())
2017-09-14 15:45:15 +02:00
bb20c0504e
CheckCondition: Fix FP in daca (iqtree) 'in >> ch'
2017-09-13 22:46:36 +02:00
db321c2617
CheckCondition: Fix FP when there is increment/decrement in condition (daca icu)
2017-09-10 22:58:05 +02:00
c34fdd1905
CheckCondition: Fix FP for undeclared variables (daca)
2017-09-10 22:30:41 +02:00
b81b4fcb78
Fixed #8208 (CheckCondition: Use Library to determine if function is const)
2017-09-08 18:08:32 +02:00
899ad8479d
CheckCondition: Fixed FP when condition contains global static variable
2017-09-08 15:44:56 +02:00
d9adb5432a
astyle formatting
...
[ci skip]
2017-09-08 15:41:14 +02:00
9cbfa0e383
Fix #7803 : false negative: condition is always true 'if (flags & A)' ( #938 )
2017-09-08 14:30:42 +02:00
58db814d72
Rephraze /Same/Identical/
2017-09-08 12:41:33 +02:00
120d0f86d0
CheckCondition: Fix FP about same condition when switch case is used (daca)
2017-09-07 22:05:01 +02:00
4c30a5af25
CheckCondition: Break out code to check if function call is non-const
2017-09-06 22:51:21 +02:00
e0c7f7f8f2
CheckCondition: Fix FP when there are method calls in condition
2017-09-06 22:26:00 +02:00
35736364f8
Fixed #8199 (false negative: (warning) Same condition '...', second condition is always false)
2017-09-05 22:45:28 +02:00
e5e6f37e41
Fixed #7405 (false positive: (warning) Opposite conditions in nested 'if' blocks lead to a dead code block.)
2017-09-05 22:03:29 +02:00
c1000998f0
CheckCondition: Fix FP found in daca results (ace)
2017-09-05 09:33:35 +02:00
d02d235e5e
Refactoring oppositeInnerCondition checking
2017-09-04 22:54:06 +02:00
d82805b7fe
CheckCondition: Improved checking for same conditions
2017-09-04 22:40:34 +02:00
abae5e0156
Fixed #8198 (false positive: (warning) Same condition, second condition is always false)
2017-09-04 22:25:20 +02:00
d838dc2129
CheckCondition::multiCondition2: Fix FN for pointers
2017-09-04 15:58:22 +02:00
095e435031
wxwidgets.cfg: Added support for some wxTextFile functions.
2017-09-04 14:52:10 +02:00
9465dca583
CheckCondition: Fix FPs for aliased variables (daca)
2017-09-04 09:34:03 +02:00
ef4a7ba7f2
Fix FP in CheckCondition::multiCondition2
2017-09-03 14:46:37 +02:00
e5c6379d01
CheckCondition: Fix FP in Cppcheck
2017-09-03 11:35:37 +02:00
b9849d9e4e
CheckCondition::multiCondition2: Handle loops better
2017-09-03 11:03:01 +02:00
01e65d3e00
Improved CheckCondition::multiCondition2 so deeper bugs are found
2017-09-03 10:44:22 +02:00
f2ec5f24ce
Fixed #5845 (new check: same condition after noreturn conditional code => second condition is always false)
2017-09-03 10:34:34 +02:00
0b751dcc1b
Opposite conditions: Better matching when outer condition uses &&
2017-09-01 23:24:15 +02:00
3b4f60fd21
Updated error message
2017-09-01 13:33:47 +02:00
dce942197c
Fixed #8186 (Inner condition always false inside for loop)
2017-08-31 16:00:12 +02:00
cf6d3ba398
Omit unneeded computations
2017-08-28 18:10:49 +03:00
b8cd7dbb5c
Use nullptr instead of 0 or NULL ( #936 )
2017-08-09 20:00:26 +02:00
814d2ae2a4
Fixed #7028 (False positive: opposite conditions (const method modifies variable))
2017-07-10 23:12:45 +02:00
32fe0aba41
Fixed #8037 (ValueFlow: global variable might be modified by function call)
2017-07-09 12:50:17 +02:00
28aa939d69
iwyu - include what you use
2017-05-27 04:33:47 +02:00
55cd69e290
alwaysTrueFalse: Dont warn when checking sizeof for some type. such condition might be platform dependent.
2017-05-13 19:07:24 +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
9225bff31d
Added (back) support for enums to CheckCondition::checkIncorrectLogicOperator() ( #7794 )
2017-03-23 18:57:48 +01:00
ca3e3b3cdb
Fixed false positive multiCondition when & is used in both conditions ( #7827 )
2017-03-15 19:37:14 +01:00
263c3596d5
known conditions: dont warn about 0 or 1 conditions as those look intentional
2017-03-08 18:39:19 +01:00
ecc59859e1
Don't simplify _Bool in TokenList
2017-03-04 11:13:28 +01:00
1c6c209353
Fixed #7890 (1.77 false positive from knownConditionTrueFalse with function-like macros)
2017-03-03 19:53:16 +01:00
16c06e5714
Fixed #7588 (Opposite conditions in nested 'if' blocks lead to a dead code block.)
2017-02-28 18:46:28 +01:00
6f1e7e897d
simplify if(tok && Token::{simple,}Match) to if(Token::{simple,}Match).
2017-02-06 15:37:12 +01:00
2f6350a0d0
Refactorized Library
2016-12-06 14:09:28 +01:00
6e8ac13325
Refactorization:
...
- Optimized std::string usage
- Replaced list by vector
- Moved iterator into loop head
- Ran AStyle
2016-12-05 17:45:34 +01:00
7197456c23
CheckCondition::checkIncorrectLogicOperator(): if we encounter a condition like 'A && (!A || B)', print the actual equivalent ('A && B') in the --verbose message.
2016-12-05 13:39:20 +01:00
cf24ea5221
fix #7783 : false positive knownConditionTrueFalse on assert(0 && "message").
2016-11-23 21:54:38 +01:00
d4f01583b6
Fixed TODO (check if function parameter is non-const reference etc..) by common function
2016-11-01 14:06:30 +01:00
04421f5601
check if AST is not null before accessing it
2016-10-09 18:21:23 +02:00
e0e53cbd66
alwaysTrueFalse: Don't warn when condition is 0 or 1
2016-10-09 15:20:43 +02:00
58eb644003
Improved Check: Warn about number and char literals in boolean expressions ( #7750 )
2016-10-09 13:21:00 +02:00
0e48625ff4
Fixed false positive when self-checking Cppcheck 'boolean result used in bitwise operation' when using boolean variables.
2016-08-29 04:09:36 +02:00
706877df2d
astyle formatting
...
[ci skip]
2016-08-24 12:43:45 +02:00
4c6f4f6708
CWE mapping of functionConst, functionStatic, initializerList, badBitmaskCheck, knownConditionTrueFalse, invalidTestForOverflow, unhandledExceptionSpecification, coutCerrMisusage,
...
invalidPrintfArgType_int
2016-08-23 16:48:36 +01:00
09a83f2cc8
Fixed #7567 ("(a | 7) > 6U" is always true)
2016-08-07 16:58:39 +02:00
5611a71820
Fixed #7543 (False positive boolean result used in bitwise operation)
2016-07-29 18:46:43 +02:00
89be630156
Fixed #7543 (False positive boolean result used in bitwise operation)
2016-07-29 17:24:22 +02:00
9bda97975a
Fixed #7037 (32bit (-m32): testsuite fails)
2016-07-19 12:14:55 +02:00
a5cfa2b12c
- #7522 and #7428 revisited. ((a&7)>7U) is always false and ((X|7)>=6) is correct (X can be negative).
2016-06-17 12:12:53 +02:00
f2ae295f1e
Support char literals in CheckCondition::checkIncorrectLogicOperator() ( #5912 )
2016-05-24 15:08:48 +02:00
5d5886b464
Properly detect binary & in CheckCondition::clarifyCondition() (fixes false positives when self-checking cppcheck)
2016-05-06 17:39:41 +02:00
3366a74bb0
Refactorized CheckCondition::clarifyCondition():
...
- Reimplemented parts of the check based on ValueType
- Merged two loops
Fixed some type conversion messages
2016-05-06 15:22:45 +02:00
00a584d8d1
astyle formatting
2016-04-22 06:01:34 +02:00
7e020e1d92
- fix for #7428 false negative: Statement is always false
2016-04-14 14:50:08 +02:00
0533d7bf9c
Run astyle + minor refactoring
2016-02-27 16:03:50 +01:00
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
7bd034c009
Fixed #7369 (False positive knownConditionTrueFalse - assertions)
2016-02-06 14:37:44 +01:00
6faa637fc7
Fixed #6537 (False positive badBitmaskCheck - error in valueflow)
2016-01-24 13:45:44 +01:00
996c9244d8
Update copyright year to 2007-2016.
2016-01-01 15:34:45 +02:00
8171154e12
Fixed #7230 (Confusing code snippet in error message)
2015-12-31 01:15:49 +01:00
24438c326e
Fixed #7233 (Fasle negative 'unknownEvaluationOrder in case of macro)
2015-12-25 18:31:21 +01:00
8f27cec991
Revert "minor tweak of comment"
...
This reverts commit b1d1869f22
2015-12-14 20:29:29 +01:00
b1d1869f22
minor tweak of comment
2015-12-14 20:03:40 +01:00
1b0bb02f1d
invalidTestForOverflow: Fixed some false negatives ( #7184 )
2015-11-30 11:12:51 +01:00
fb8cce647c
invalidTestForOverflow: Refactor; move from checkother to checkcondition
2015-11-30 08:51:15 +01:00
00bdc89f98
Refactorizations:
...
- Rely on SymbolDatabase to detect string types
- Loop over variable list instead of token list
- Fixed two comments claiming that the AST is experimental
2015-11-20 11:20:42 +01:00
0f9d90d2be
Changed Copyrights. Removed my name.
2015-11-18 20:04:50 +01:00
b9b0964dab
Fixed #7006 (False positive Mismatching assignment and comparison (variable is changed in loop))
2015-11-11 13:45:28 +01:00
2d0ecc08c1
Check pointers for NULL before utilizing and do not check it later
2015-11-06 20:24:09 +01:00
f273323cd0
Fixed TODO-test for CheckCondition::checkBadBitmaskCheck by handling functions return bool.
2015-09-03 21:07:03 +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
ce96a5e84f
Run cheaper checks first
2015-08-07 16:25:47 +03:00
a51acc8abd
minor tweak of 'Redundant condition' error message
2015-08-05 11:30:58 +02:00
eda5272dfd
Fixed #6875 (Improve 'Redundant condition' error message)
2015-08-05 11:15:54 +02:00
Paul Fultz II
Daniel Marjamäki
orbitcowboy
rikardfalkeborn
PKEuS
jrp2014
Dmitry-Me
Oleksandr Redko
Nekto89
orbitcowboy
Ayaz Salikhov
Ayaz Salikhov
Matthias Krüger
PKEuS
Frank Zingsheim
Harald Scheidl
Roberto Martelloni
Bartlomiej Grzeskowiak
Bartlomiej Grzeskowiak
Alexander Mai
Lauri Nurmi
Aleksandr Pikalev
Simon Martin