Commit Graph

688 Commits

Author SHA1 Message Date
Robert Reif 04d04c33c2 speed up checks by caching commonly looked up stuff in the symbol database (CheckOther). Ticket #4266 2012-11-14 18:12:33 +01:00
PKEuS ce961578c2 New checks (inconclusive): Suspicious calculation with sizeof()
- Check for sizeof(ptr)/something: This indicates that programmer was trying to calculate array size, but sizeof(ptr) doesn't return the length of the memory area, but size of a pointer.
- Check for sizeof()*sizeof(): This indicates that programmer misunderstood what sizeof() does: It does return the length in bytes of the given variable, not e.g. the number of elements in an array.
2012-11-09 18:08:20 +01:00
PKEuS aa2ad41629 Print message "Found calculation inside sizeof()" also for increment/decrement operator. 2012-11-06 11:39:47 -08:00
Zachary Blair 51d128c918 Fixed #2029 (free invalid address) by reporting previously-unreported errors as "inconclusive" 2012-11-05 21:02:51 -08:00
PKEuS 1c399c86ca Improved fix for #4311; Added back support for "this." (fixes again #4291)
Added TODO unit test for missing varid.
2012-11-03 21:16:05 +01:00
Daniel Marjamäki 6c2563c467 Fixed #4311 (False positive: warning (selfAssignment): Redundant assignment of 'm_bar' to itself. 2012-11-03 13:18:43 +01:00
PKEuS a36e008967 Fixed #4314: Using CheckNullPointer::isPointerDeRef() here is overkill and doesn't work as intended, since this function is designed to return 'false' if it isn't sure. 2012-11-03 10:25:32 +01:00
Daniel Marjamäki e7483af028 Opposite inner conditions - made check 'experimental' because there are unsolved false positives. 2012-10-21 18:18:29 +02:00
Baris Demiray d84d360afc Fixed #4291 (Variable ID is not set when variable is accessed through 'this') 2012-10-19 06:18:13 +02:00
Daniel Marjamäki 61183e7896 astyle formatting 2012-10-08 16:23:05 +02:00
Alexander Mai 3656366c7e Fixed #4257 (False Positive: String literal compared with variable - for non-pointer variable) 2012-10-07 16:26:03 +02:00
PKEuS c17853949d Fixed scope handling problems with CheckOther::checkComparisonOfFuncReturningBool(), removed its experimental status. 2012-09-29 11:23:30 +02:00
Daniel Marjamäki 52be4a5925 Disabled checkComparisonOfBoolWithBool since there are false positives. Ticket #2617 2012-09-28 19:11:36 +02:00
Daniel Marjamäki ff4f8b58f3 Disable checkComparisonOfFuncReturningBool check because of false warnings. Ticket #2617 2012-09-28 18:51:10 +02:00
Mohit Mate 9e297c95f2 Fixed #2617 (improve check: comparing boolean with '<') 2012-09-26 18:18:36 +02:00
XhmikosR 3c14e4b52a test: tabs to spaces, remove trailing spaces and extra empty lines at the end of files 2012-09-17 13:51:40 +02:00
PKEuS 5237ed2de9 Message refactorization: checkother.cpp 2012-09-16 19:44:02 +02:00
PKEuS 9a624576f4 Revert "CheckOther::clarifyStatement: improved message to show what's the 'bad' and the 'good' expression."
This reverts commit f8591f9004.
2012-09-15 20:19:02 +02:00
Arpit Chaudhary 67e40a85e5 Improved check for shifting by negative values and removed false positives 2012-09-05 16:09:40 +02:00
Nilesh Kumar c7633fc73c Fixed #3645 2012-09-05 13:48:00 +02:00
Zachary Blair 8546bcc94e Fixed #2029 (new check: free invalid address) 2012-09-04 23:31:23 -07:00
Edoardo Prezioso f8591f9004 CheckOther::clarifyStatement: improved message to show what's the 'bad' and the 'good' expression. 2012-09-04 02:07:55 +02:00
anuraggarg011 b156c727b0 Fixed #3939: Support ****foo++; 2012-09-03 17:10:27 +02:00
Ankita Gupta c3a65dca40 Fixed #3793 (improve check: calculation in sizeof) 2012-09-03 15:56:10 +02:00
PKEuS 27cafd495a Don't bailout for noreturn functions in checkRedundantAssignments outside switch. 2012-09-03 12:03:30 +02:00
PKEuS b6c1528566 Test case for #4135 2012-09-03 11:32:15 +02:00
PKEuS 2d64b69cf4 New check: Detect redundant assignment to a variable and redundant copying to a buffer
This check partially replaces the check for redundant assignments in switch
2012-09-02 13:09:32 +02:00
pranav1509 6f6baa67e4 Added more patterns to redundant condition check. 2012-09-01 13:39:32 +02:00
PKEuS 6893948c72 Bugfix: Reset property info when Token::link() is set (< can be a bracket or a comparison operator). Fixes #4075. 2012-08-26 10:23:16 +02:00
PKEuS 808c3468c9 New check: detect suspicious comparison of string literal with char* variable
Bugfix: Update Token type when varId is set
2012-08-24 14:25:17 +02:00
PKEuS 76fbcce13f Restored (intentional) content of screwed up commits 1bcdf4ce3d and 674f7980d519712ff16d8f874dfe55a84deb4b5b:
- New check (Inconclusive): Array filled incompletely with memset/memcpy/memmove
-- This check only warns if the number of elements is given as size in bytes to memset, memcpy or memmove and if the size of an element is larger than 1 Byte. It does not warn for random numbers

- New check: Detect ineffective statements like '*foo++;' (Should be: '(*foo)++;')

Sorry for the inconveniences.
2012-08-24 11:28:50 +02:00
Edoardo Prezioso 0f1accc2da Revert latest two commits as they break the compilation and the style. PKEuS??? 2012-08-24 00:10:19 +02:00
PKEuS 1bcdf4ce3d New check: Detect ineffective statements like '*foo++;' (Should be: '(*foo)++;') 2012-08-23 12:28:40 -07:00
PKEuS 674f7980d5 New check (Inconclusive): Array filled incompletely with memset/memcpy/memmove.
This check only warns if the number of elements is given as size in bytes to memset, memcpy or memmove and if the size of an element is larger than 1 Byte. It does not warn for random numbers
2012-08-23 11:27:00 -07:00
PKEuS 4d2104ca08 Made a TODO from failing tests - Simplification of known variables is not smart enough to handle operator>> properly- 2012-08-22 16:44:41 +02:00
PKEuS 6364f43b7a Fixed compiler error introduced recently. 2012-08-22 16:41:11 +02:00
Arpit Chaudhary 7c8da17c44 Added check for detecting if a variable or number is shifted by negative right operand. Statements like:
int i = -1;
 a << i;

 would result in an error message stating undefined behavior.
2012-08-22 15:44:20 +02:00
Kumar Ashwani afe030ce9b Fixed #2628: Detect redudant usage of operator++/-- in switch. 2012-08-22 14:40:57 +02:00
Edoardo Prezioso 2b5cd2effc Fixed G++ [-Wparentheses] warning. This also fixed #4073 (Crash on self assignment). 2012-08-21 20:15:04 +02:00
PKEuS b4b5c80db9 Improved check: Added message when checking sign of a pointer. 2012-08-21 03:28:02 -07:00
PKEuS b641a10e35 Fixed false negative: memset(foo, 0, sizeof(&foo)); is as suspicious as memset(foo, 0, sizeof(foo)); 2012-08-20 10:08:18 -07:00
PKEuS a243983242 Refactorized type handling in CheckIO and CheckOther:
- Added several types (std::) to isComplexType
- Types in namespace std:: are considered to have no side-effects (solved one TODO)
- Scope of a pointer can be limited without side effects
2012-08-20 08:57:28 -07:00
PKEuS 452f95cea0 More robust template detection in clarifyCondition check based on Token::link. (#3818)
Create links between < and > only on non-C code.
AStyle fix
2012-08-02 04:03:01 -07:00
Ettl Martin 98d608231d spelling fixes 2012-07-31 23:35:56 +02:00
PKEuS 26a2379f9f Fixed false positive #3941. 2012-07-29 06:39:43 -07:00
PKEuS 9834888f19 Removed some duplicate tests and a redundant variable 2012-07-25 01:34:54 -07:00
PKEuS ae6201d289 Fixed false positive "Parameter 'x' is passed as a value" for types like std::vector<T>::size_type (#3986) 2012-07-23 01:41:20 -07:00
Zhao Qifa 188d2e143d add a performance checker for const assignment 2012-07-22 09:17:00 +02:00
PKEuS 41fecb2e6d Fixed evaluation of redundant conditions (#3972) 2012-07-13 06:01:19 -07:00
PKEuS 43c060b630 Removed preprocessor directives from tests that aren't preprocessed before being tokenized. 2012-07-07 11:21:08 -07:00
Robert Morin 25c1cc4c8e Improve check: warn when comparing boolean value with < <= > >=. Ticket: #2617 2012-07-03 06:39:13 +02:00
Daniel Marjamäki 162a430354 Fixed #3868 (false positive: (style) Same expression on both sides of '|'.) 2012-06-23 19:54:15 +02:00
Daniel Marjamäki 3db58bb57f Reviewed C handling in CheckOther::clarifyCondition, never treat x<..> as a template in C files. 2012-06-23 07:29:49 +02:00
Daniel Marjamäki 8aba801360 Fixed #3800 (False negative: Self-assignement of variable declared as 'extern') 2012-06-22 11:23:50 +02:00
Zachary Blair fa2bca1e09 Ticket #3876: Improved check by only bailing of loops that contain break or continue 2012-06-16 13:11:09 -07:00
Daniel Marjamäki 89b1b4ea6e Fixed #3892 (False positive: 'if (var >= 0.0) then if (var >= 0.0) always returns true 2012-06-15 16:54:02 +02:00
Zachary Blair e2348560e4 Fixed Ticket #3876 (Error (double free) detected that can't possibly happen) 2012-06-10 17:50:31 -07:00
Ettl Martin c9cb492bc7 #3874 added missing testcase to avoid false positives 2012-06-10 18:36:19 +02:00
Ettl Martin d7c1907601 added tests for duplicated branches. Inspired by http://www.viva64.com/en/b/0149/ ( Comparision between PVS-Studio and cppcheck): Errors detected in Quake 3: Arena by PVS-Studio: Fragement 2 2012-05-30 01:30:37 +02:00
Ettl Martin 474dccf8ad added a testcase for detecting duplicate if else branches. 2012-05-29 09:22:42 +02:00
Zachary Blair 2bd171dded Fixed #3794 (New check: Missing break in switch (duplicate bitwise operation)) 2012-05-28 21:19:22 -07:00
PKEuS e2bab4b6a3 Implemented Function::nestedIn to be able to identify the scope the function belongs to, even if Function::functionScope.functionOf is not available.
Refactorized usage of SymbolDatabase in checkOther:
- Don't copy Function instances in checkExpressionRange
- Simplifications by more accurate usage of information in database
2012-05-24 08:40:43 -07:00
PKEuS 97c4af44ca Refactorizations in checkOther:
- More accurate usage of symbolDatabase to reduce code and false negatives
- Avoided unnecessary construction of pattern string
- Only search for class/struct definition before usage
2012-05-24 06:34:59 -07:00
Daniel Marjamäki 77e9106ec0 Fixed #3634 (False positive: compareBoolExpressionWithInt when using boost::tuples) 2012-05-22 19:01:21 +02:00
PKEuS b81eafe0dc Splitted CheckIO from CheckOther. 2012-05-20 02:57:07 -07:00
Daniel Marjamäki f803a18d50 Fixed #3749 (false positive: same expression on both sides of operator) 2012-05-17 07:26:57 +02:00
Ettl Martin 8a7b141246 added testcase for ticket 3689 2012-05-14 09:57:30 +02:00
PKEuS 06a77679d4 Refactorizations:
- Added support for pointers in self assignement check
- Removed redundant for loop in checknullpointer.cpp
- Fixed warning about signed/unsigned mismatch in cppcheck.cpp by making Settings::_maxConfig unsigned
2012-05-11 10:38:19 -07:00
PKEuS 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
Ettl Martin bb8342fbb4 fixed misspelled word 'Comparision' --> 'Comparison' 2012-04-26 23:04:55 +02:00
PKEuS 5ac7552e4e New check: Comparision of modulo results that are always true/false. 2012-04-26 15:23:47 +02:00
PKEuS 6a37c36ee8 Fixed #3741
Removed redundant nullpointer check (cppcheck catch)
2012-04-18 16:35:04 +02:00
PKEuS 8e5949c6ce Added several C++11 algorithms and containers to CheckStl
Added pattern "> %varid%" to CheckStl::stlBoundries()
Fixed message in checkOther (#1320)
2012-04-17 12:54:01 +02:00
Ettl Martin 7be01da8e9 fixed ticket 3693. Added modulus operator to Mathlib + unittests. Added a test to checkother to ensure the testcase of ticket 3693 does not trigger an error message. 2012-04-12 14:02:09 +02:00
Daniel Marjamäki 66227c4da0 Fixed #3609 (clarifyCondition delivers false positives when using Windows-Traits as a template) 2012-04-08 18:07:11 +02:00
PKEuS b0f571b25c Fixed #3383: If there is an empty line between subsequent break statements, only issue a message for inconclusive checking 2012-04-05 10:38:29 +02:00
PKEuS c1fc7a2218 Improved CheckOther::checkComparisonOfBoolWithInt and CheckOther::checkComparisonOfBoolExpressionWithInt:
- Added support for comparision of bool constant with number constant (-> fixed #1877) and integer variable with boolean expression
- Moved a check from checkComparisonOfBoolWithInt to checkComparisonOfBoolExpressionWithInt
- Generalized some patterns
- Made error message more accurate concnerning the "neither 0 nor 1" part.
- Reduced number of Token::Match calls
2012-04-02 15:45:51 +02:00
PKEuS 033e4a2c1f Fixed #3676. 2012-04-02 11:21:04 +02:00
PKEuS 4f1f6e1824 Improved simplification of calculations:
- Use more generic patterns
- Look on operator precedence more consequently
-> Made a TODO test case from a test case that worked previously, because the calculation is simplified so that the problem isn't detected any more.
Changed comment "Coding style checks" to "Checks", because it didn't fit
2012-03-27 21:29:50 +02:00
PKEuS 989ac449e4 Made invalidPointerCast message inconclusive for casting from floating point type* to char* (Fixed #3639) 2012-03-25 12:55:39 +02:00
Daniel Marjamäki ca6a93816b Merge pull request #89 from HeisSpiter/master
Merged two checks to get a better one regarding sizeof
2012-03-25 02:38:04 -07:00
PKEuS e4d92055e7 Improved sizeofCalculation check:
- Bailout on expanded macros for conclusive checking
- Support for more operators
- Removed indendation counter
Improved checkSignOfUnsignedVariable:
- Made the patterns more generic
- Improved verbose error message (-> Fixed #3080)
2012-03-25 11:32:00 +02:00
Pierre Schweitzer 2b5ddb7858 Merge the strncmp & malloc sizeof checks into a more generic test that handles several cases where sizeof is misused, or could be misused 2012-03-23 21:47:13 +01:00
Pierre Schweitzer ec44967e13 Add a new test to check improper sizeof usage. It's for the moment limited to malloc calls. 2012-03-21 21:13:09 +01:00
PKEuS b6057a1148 Improved CheckOther::checkIncorrectLogicOperator:
- Added a lot of additional pattern
- Rewrote error messages to make them more understandable and better fitting to the situation. (Fixed #3664)
- Cleanup in unit tests
Improved message of static string comparision check
2012-03-15 20:38:28 +01:00
PKEuS 7cfffc9c9d Improved CheckOther::checkIncorrectLogicOperator:
- Implemented automatic swapping of conditions and operands
- Added several patterns
- Added support for conditions outside of if/while
2012-03-12 19:06:30 +01:00
PKEuS 6f164de609 Improved static string comparision check: Implemented #3214
Fixed false negative on argument count of fnprintf/snprintf when first variable argument is a string. (#3655)
Uncommented call of virtualDestructorError in getErrorMessages in checkclass.h
Refactorizations:
- Rearranged code in checkother.h to make ordering more consistent and to increase encapsulation of private data
- Replaced some single-token-patterns
2012-03-11 11:01:39 +01:00
PKEuS ef6e381d47 Improved bitwise on boolean check to make it working on more code patterns
Refactorizations in checkother.cpp:
- Make use of symboldabase instead of: indentation counters, manual detection of variable declarations
- Removed some indexing variables to reduce calls to tokAt and the numbers given to this function
- Use tok->nextArgument() to jump to a specific argument
2012-03-03 21:14:20 +01:00
PKEuS 1747813a8b Added check for invalid pointer casts (#1255)
Detect sign extension problems when variable is a reference (#3637)
Refactorizations:
- Tokenizer::getFiles returns a reference instead of a pointer, because its guaranteed that no nullpointer is returned
- Remove signed/unsigned in one step for "%type% signed|unsigned"
- Fixed recently introduced compiler warning in symboldatabase.cpp
2012-02-26 11:56:32 +01:00
Zachary Blair 0e791929b5 Ticket #3598 - Added a missing ASSERT_EQUALS() statement to the end of checkDoubleFree() 2012-02-18 12:13:21 -08:00
PKEuS 8ea5df62c4 - Improved support for numbers in code:
-- Use MathLib::toLongNumber for conversion in tokenizer (Fix #3610)
-- Handle octal numbers in tokenizer
- Refactorizations in MathLib::toLongNumber and Settings
2012-02-17 15:47:08 +01:00
Zachary Blair 9d75641ef8 Fixed #3598 (false positive: (error) Memory pointed to by 'a' is freed twice.) 2012-02-16 21:03:38 -08:00
Zachary Blair 69567515ce Ticket #3581 - added missing newlines to the test code 2012-02-04 11:39:29 -08:00
Zachary Blair 8f827aa65f FIxed #3581 (double free false positive when exception rethrown) 2012-02-04 11:24:40 -08:00
PKEuS d5c2c7db88 - Moved checkCatchExceptionByValue from CheckOther to CheckExceptionSafety
- Fixed false positive: throw outerCatchVar; in inner catch is now correctly handled
- Added eTry and eCatch to Scope::isLocal -> Scopes inside catch are now detected by symbol database
2012-02-02 16:17:42 +01:00
Zachary Blair 589a2461bd Fixed ticket #3550 (false positive: (error) Memory pointed to by 'pxpm' is freed twice) 2012-01-24 22:43:44 -08:00
Zachary Blair 0415444e28 Merge branch 'master' of github.com:danmar/cppcheck 2012-01-19 23:02:33 -08:00
Zachary Blair b89adff9fd Fixed Ticket #3300 (false negative: doublefree of pointer) 2012-01-19 22:59:54 -08:00
Daniel Marjamäki 525e7fba20 Fixed #3490 (False positive: sscanf with %c) 2012-01-18 23:57:08 +01:00
PKEuS 461565c50a Fixed #3517 and #3513 2012-01-15 12:32:02 +01:00
Reijo Tomperi dd18f595b1 Fix #3516 (inaccurate warning: "An unsigned variable will always be positive" (unsigned n; if (n >=0);))
http://sourceforge.net/apps/trac/cppcheck/ticket/3516
2012-01-14 12:50:09 +02:00
Daniel Marjamäki 65ce55e675 Fixed #3472 (false positive: (error) Passing value 0 to log() leads to undefined result) 2012-01-08 12:07:25 +01:00
Daniel Marjamäki 94d220e370 Refactoring: Made Preprocessor::getcode nonstatic 2012-01-06 08:01:50 +01:00
PKEuS eabdc9082e Fixed false positives related to %*[] in scanf format string (#3468) 2012-01-04 11:22:42 +01:00
PKEuS 621d43e9e4 Fixed #3461: Support for %m* on scanf-functions 2012-01-02 14:05:58 +01:00
Reijo Tomperi 8cae17fda8 Update year to 2012 2012-01-01 01:05:37 +02:00
Erik Lax 3d0c1a3301 Fix #3457 (Statement following goto can be executed)
http://sourceforge.net/apps/trac/cppcheck/ticket/3457
2012-01-01 00:11:03 +02:00
Marek Zmysłowski dd8316474a Fixed #3335 (new check: warn about potential missuse of isgraph-like functions) 2011-12-29 08:08:37 +01:00
Reijo Tomperi 0a588496a0 Fix astyle and test failures. 2011-12-28 22:05:10 +02:00
Daniel Marjamäki 8e94e2261b Comparing bool with int: Fixed false positives 2011-12-23 19:11:51 +01:00
PKEuS 8213a15b2a improving checkSizeofForStrncmpSize 2011-12-23 18:11:34 +01:00
Daniel Marjamäki e9d697b636 Fixed #3419 (false positive: (style) Same expression on both sides of '&'.) 2011-12-23 16:08:53 +01:00
PKEuS 409364747c Fixed #3441 (segmentation fault of cppcheck (%: return ; ())) 2011-12-23 12:46:59 +01:00
Daniel Marjamäki df8504f0ea Clarify calculation: Fixed false positives when there are various function calls 2011-12-23 12:13:39 +01:00
Daniel Marjamäki f8181df340 Fixed #3410 (Comparing bool against bool produces false positive) 2011-12-20 06:38:05 +01:00
PKEuS 0205582161 Fixed #3327 (printf with std::string as parameter) 2011-12-18 19:41:21 +01:00
PKEuS a311904a0f Patch that fixes some bailouts for isEnabled('style') in both directions. Improved checkSizeofForNumericParameter's error message, made it 'warning', made it non-experimental. 2011-12-16 19:21:14 +01:00
PKEuS c9f5117cf5 Fixed #3407 (False positive: (inconclusive) Found duplicate branches for if and else. (inline assembler)) 2011-12-13 21:42:38 +01:00
PKEuS 9b685ba3c3 Code cleanup 2011-12-09 21:00:57 +01:00
PKEuS 97eecb78a7 Fixed #3381 (false positive: (style) Statements following return, break, continue, goto or throw will never be executed) 2011-12-07 18:20:52 +01:00
PKEuS 1f438b0505 Fixed #3375 (Improve check: Detect unreachable code) 2011-12-03 11:43:23 +01:00
Daniel Marjamäki 9a84c5845a Fixed #3373 (False posititive: incorrect %* handling in sscanf) 2011-12-02 17:09:32 +01:00
Richard Quirk b2ea78543b Fix false positive with non-const function calls 2011-12-01 19:57:04 +01:00
Daniel Marjamäki 98480bf504 Fixed #3354 (Incorrect both sides of '||' expression match when using increment in expression.) 2011-12-01 17:46:33 +01:00
Daniel Marjamäki 31b576de3b Fixed #3334 (Test for same expression on both sides of '&' reports false positive) 2011-12-01 17:07:55 +01:00
PKEuS ee3e10ea97 Fixed #3364 (Crash in printf parsing) 2011-11-30 20:23:29 +01:00
Daniel Marjamäki b61c01c6a4 Fixed #3356 (false positive: (warning) Comparison of a boolean with integer that is neither 1 nor 0) 2011-11-29 18:14:57 +01:00
Daniel Marjamäki b538f49a6e Merge pull request #61 from richq/sameexpr
Fix for #3317 - same expression on both side of '&&' false positives
2011-11-29 08:50:02 -08:00
Daniel Marjamäki 522da8d258 sizeof for numeric constant : disabled check. see ticket #3179 2011-11-27 18:50:21 +01:00
PKEuS 71c8669261 Fixed #3311, #3313 and #3339 (printf format string false positives) 2011-11-27 07:29:09 +01:00
Richard Quirk d28cf42d4c Fix ticket #3317 (same expression false positives)
Add a check for function calls that have no side effects. That means
known const methods and a list including strcmp, strlen, etc.

If the function is not known to be side effect-free then no style
warning is given.

Add test cases for the duplicate expressions.
2011-11-23 21:39:03 +01:00
Richard Quirk 511ac0ab1f Remove false positives for nested logic 2011-11-23 21:39:03 +01:00
Daniel Marjamäki 5b5ea29f23 Mismatching format string parameters. Made check experimental. See tickets #3311, #3313 and #3339 2011-11-21 07:31:06 +01:00
Richard Quirk 91713ffe84 Fix false positives for %[ in scanf 2011-11-20 16:48:54 +01:00
Marek Zmysłowski 994f08fdf0 Fixed #886 (new check: wrong value passed to isgraph function) 2011-11-17 16:31:16 +01:00
Daniel Marjamäki b7cc9779c4 Merge pull request #59 from richq/sameexpr
Improved same expression check for ticket #3274
2011-11-08 23:56:36 -08:00
Reijo Tomperi 7a294c1f79 Fix #3307 (Invalid format string/parameter mismatch warning)
http://sourceforge.net/apps/trac/cppcheck/ticket/3307
2011-11-09 00:16:37 +02:00
Richard Quirk d1bc8819f9 Fix for same expression separated by commas
The code branch tested by the previous check for && is now different, so
I've changed the test to use == instead. There was also a missing case
when the expression was followed by a comma instead of being preceded by
one.
2011-11-08 21:56:54 +01:00
Richard Quirk d5664dd6cf Improved %or% and & checks 2011-11-08 21:56:54 +01:00
Richard Quirk 4cb97edbaf Improved same expression check for ticket #3274
Expand the logic for the check for the same expression on both sides of
the || and && operators. Now expressions can be more complex, with the
"alt" variable helping to fudge operator precedence to avoid false
positives.
2011-11-08 21:54:42 +01:00
Daniel Marjamäki fa076598ad Fixed #3233 (false positive: (style) Checking if unsigned variable 'i' is less than zero.) 2011-11-06 18:24:37 +01:00
Edoardo Prezioso 6e2f2816de Improve same expression check: remove '%op%' pattern and add ',' for the same expressions as an argument inside a function.
Improve compound assignment simplification: use already defined 'isAssignmentOp' and extend the adding parenthesis to a generic operator, not only to the arithmetical ones. See: http://en.cppreference.com/w/cpp/language/operator_precedence
2011-11-06 14:35:53 +01:00
Daniel Marjamäki e11c1f7975 Fixed #3265 (false positive: comparison of bool with nonzero integer) 2011-11-06 08:21:34 +01:00
Edoardo Prezioso 99463d3368 Improve same expression check: take count of operations and assignments before the same expression and add missing 'return' pattern to the struct member variable part of the check. 2011-11-05 22:25:01 +01:00
Richard Quirk a3f2c1e651 Improve for same expression on both sides of operator 2011-11-05 15:46:11 +01:00
PKEuS 0c469bae41 Fixed #3089 (New Check: Detect wrong usage of printf/scanf) 2011-11-05 07:29:53 +01:00
Edoardo Prezioso 68cb7a2731 Fix all the test failures caused by my previous commit. 2011-10-30 11:27:27 +01:00
Edoardo Prezioso 44a234f9b0 Fixed lots of test failures caused by my previous commit.
There are still some which I don't know how to fix.
2011-10-30 11:21:46 +01:00
Daniel Marjamäki b67cb077a3 fix unit test failure 2011-10-29 12:21:22 +02:00
Richard Quirk 665cdfabdc Warn when sizeof is used in strncmp ticket #2095
This checks for the case where the user thought sizeof(buf) gave the
size in bytes of 'buf' in code like the following:

  const char *buf = "Hello World";
  strncmp(buf, other, sizeof(buf));
2011-10-28 22:14:55 +02:00