f603b529df
Fix issue 8413: Condition is always false 'i=expr; if (i != expr) {}' ( #1295 )
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* 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
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[ci skip]
2018-08-05 22:40:21 +02:00
b839ad60dd
Fix issue 6856: add checks in isOppositeCond when using == and < or > ( #1298 )
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* 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
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[ci skip]
2018-07-15 14:45:33 +02:00
5d1fdf7958
Fix issue 7904: Handle double nots in isSameExpression ( #1305 )
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* 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()
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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 )
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* Fix false positive with oppositeExpression when using binary op
* Simplify conditional
2018-05-08 20:43:57 +02:00
f2bb7397b3
astyle formatting
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[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 )
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* 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 )
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* 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 )
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* Fix false positive for opposite conditions when using different containers
* Add additional test
2018-04-05 06:43:13 +02:00
e65a5529ad
astyle formatting
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[ci skip]
2018-03-24 12:30:11 +01:00
43be20a824
Check more opposite conditions
2018-03-24 07:58:37 +01:00
c4caee6b18
Updated copyright year
2018-01-14 15:37:52 +01:00
bbeff99cc3
Fixed #6930 (Token: need function that says if the token comes from instantiated template argument)
2018-01-11 09:41:22 +01:00
8fe4852b98
Refactoring, reuse and improve isVariableChangedByFunction()
2017-11-18 11:02:52 +01:00
a8700f5622
Remove redundant parts of conditional expressions ( #988 )
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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
5993c40d5b
Improve 'opposite inner condition' check
2017-09-22 14:01:20 +02:00
e61222126f
Fixed #8176 (ValueFlow: variable might be changed if it's passed by reference to method)
2017-09-20 22:09:09 +02:00
5f4b06c0f4
isVariableChangedByFunctionCall: Fix FN when constructor argument is const reference
2017-09-20 14:03:56 +02:00
3e231a9325
Refactoring: Reuse function numberOfArguments() for counting arguments
2017-09-20 13:28:45 +02:00
2103726d54
Stop counting arguments properly
2017-09-20 13:00:43 +02:00
4318521fc1
Fixed #8187 (isVariableChangedByFunctionCall: Constructor reference argument)
2017-09-20 12:53:25 +02:00
56544ac936
Fixed #8211 (Crash on incomplete code in isVariableChanged ())
2017-09-11 13:45:36 +02:00
d02d235e5e
Refactoring oppositeInnerCondition checking
2017-09-04 22:54:06 +02:00
30f04a5a96
Fixed #8195 (False positive uninitvar (regression) - valueflow misses variable initialization via istringstream >>)
2017-09-02 21:53:51 +02:00
0b751dcc1b
Opposite conditions: Better matching when outer condition uses &&
2017-09-01 23:24:15 +02:00
3bbcede43b
Fixed #8193 (crash: A = -(-0.2) / (1.0 + B * B) ( daca, lammps))
2017-09-01 22:15:09 +02:00
7fad1b9a36
Improved checking for opposite conditions
2017-08-31 22:53:21 +02:00
dce942197c
Fixed #8186 (Inner condition always false inside for loop)
2017-08-31 16:00:12 +02:00
d598a1c278
Fix typo causing two expressions being identical
2017-08-30 22:43:54 +03:00
59034e17f1
Refactoring, reuse code to skip lambda functions
2017-08-29 22:35:55 +02:00
32fe0aba41
Fixed #8037 (ValueFlow: global variable might be modified by function call)
2017-07-09 12:50:17 +02:00
0a91ced941
refactoring, use continue in loop instead of nesting
2017-07-09 12:36:33 +02:00
28aa939d69
iwyu - include what you use
2017-05-27 04:33:47 +02:00
8a738eefab
fixed #7998 (uninitialized variable is not found when used with switch/case)
2017-04-23 18:05:14 +02:00
3fbcc0cd3b
Refactor CheckFunctions::invalidFunctionUsage
2017-04-20 19:57:39 +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
816106560a
More conservative check for non-commutative operator+ in isSameExpression() ( #7938 )
2017-03-15 19:17:40 +01:00
a53f14da25
Fixed #7925 (False Positive identical condition)
2017-02-22 21:13:36 +01:00
718fcfda46
Several small refactorizations
2016-12-06 20:02:43 +01:00
2f6350a0d0
Refactorized Library
2016-12-06 14:09:28 +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
efa3aba32a
Remove Tokenizer::simplifyNull()
2016-10-18 21:44:02 +02:00
e784901303
Fixed #6971 (False positive duplicateExpressionTernary - cast ignored)
2016-08-01 21:53:43 +02:00
b3877a8ba0
Cleanup variable names
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* fix typo
* use camelCase instead of underscore
2016-08-01 14:33:56 +03:00
1f27c4b76b
Merge pull request #771 from Dmitry-Me/charUsedAsArrayIndex
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Portability warning when 'char' type is used as array index
2016-02-10 20:11:38 +03:00
c3399493ef
Portability warning when 'char' type is used as array index
2016-02-08 10:08:35 +03:00
0847d3d19a
ValueType related bugfixes:
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- ptrdiff_t is SIGNED
- Detect pointers to unknown types as pointers
- Do not identify bool* as boolean (#7381 )
2016-02-05 20:29:17 +01:00
e71e9bd538
CheckBool: Rely on ValueType, removed a redundant check
2016-02-05 15:48:51 +01:00
b9a4a950a2
Fixed #7144 (Tokenizer::isScopeNoReturn: handling '{ { throw new string(..); } }')
2016-01-18 15:39:20 +01:00
d656e3a056
Fixed #7103 (isReturnScope: handling 'return (bstr){0};')
2016-01-17 12:38:49 +01:00
522de81cc7
Refactoring: Move isReturn() to astutils and rename it to isReturnScope()
2016-01-16 18:52:34 +01:00
b3208fb4b3
Fixed #7211 (False positive: Finding the same expression on both sides of an operator (enumconstant == 0))
2016-01-10 11:21:43 +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"
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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
9d8dffbd79
#6269 false positives in case of overloaded standard library functions. Detect memset() with proper argument cound, using new function numberOfArguments()
2015-12-06 12:50:05 +01:00
0f9d90d2be
Changed Copyrights. Removed my name.
2015-11-18 20:04:50 +01:00
4ec333dbb6
Fixed #7007 (ValueFlow: value is not known, modified by subfunction)
2015-11-12 14:59:35 +01:00
b9b0964dab
Fixed #7006 (False positive Mismatching assignment and comparison (variable is changed in loop))
2015-11-11 13:45:28 +01:00
cba11e623e
Use ValueType in astIsIntegral()
2015-10-11 14:11:11 +02:00
ac9cb87e04
ValueType: Handle bit operations, sizeof better. Use ValueType in astIsFloat().
2015-10-11 12:20:40 +02:00
f5d9ba9cf3
Rewrote the charvar checker. It now uses valueflow also to limit false negatives.
2015-10-06 17:30:51 +02:00
88b3d90505
#7023 segmentation fault (invalid code) in astIsIntegral. Avoid crash, unfortunately there is no syntax error yet detected.
2015-10-06 11:21:31 +02:00
e99b4319c9
astutils: remove unused functions isSignedChar and isChar.
2015-10-06 08:27:47 +02:00
2034706033
AST: Use AST type in astIsSignedChar
2015-10-06 07:13:41 +02:00
a574fda8a9
Fixed #6935 (Wrong duplicate expression)
2015-10-03 14:56:24 +02:00
4d80df2f4a
Added pointer to Type to Token (similar to Token::Variable() and Token::function()):
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- Accessible via Token::type()
- Renamed former Token::type() to Token::tokType()
- Removed SymbolDatabase::isClassOrStruct()
2015-08-15 11:19:21 +02:00
3a1a34751f
Library: Initial handling of method calls
2015-08-10 09:41:06 +02:00
e598b07a6d
Moved functions to astutils
2015-08-03 09:20:50 +02:00
96c3c111fc
Refactoring: Move some AST related functions to distinct source file
2015-08-02 21:57:32 +02:00
Paul Fultz II
Daniel Marjamäki
PKEuS
Dmitry-Me
jrp2014
Oleksandr Redko
Ayaz Salikhov
PKEuS
Frank Zingsheim
Dmitry-Me
Lauri Nurmi
Alexander Mai
Matthias Krüger