Commit Graph

631 Commits

Author SHA1 Message Date
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 1ef99e2f21 Improved checkautovariables:
- Added support for checking a few more code patterns
- Simplified code by using more information from the symboldatabase
- Moved redundant part of c_str-check to checkstl
Two fixes according to output of pvs studio in testsimplifytokens.cpp
2012-03-01 18:38:20 +01:00
Ettl Martin 2ac907b40a fixed compiler warning (gcc-4.6.1) 2012-02-27 14:13:34 +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 9d75641ef8 Fixed #3598 (false positive: (error) Memory pointed to by 'a' is freed twice.) 2012-02-16 21:03:38 -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
PKEuS 22c1ce8a68 Fixes for #3480 and #3568. 2012-01-31 15:49:34 +01:00
Edoardo Prezioso bb703f4d0b Fixed: (warning) Found simple pattern inside Token::Match() call. 2012-01-28 20:31:12 +01:00
PKEuS 91a01a0a0d - checkUnsignedDivision checks for variable/variable (inconclusive). General bailout for if-statements.
- Make use of recently implemented symboldatabase functions (catch-support, reference-support)
- Other refactorizations
2012-01-28 12:32:28 +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
PKEuS 36479499e7 - Solved FIXME: Made detection of code that is no pointer-dereference more robust, uncommented code (checknullpointer.cpp)
- Removed more indendation level counters
- Make use of symbol database more often
- Other refactorizations
2012-01-21 19:55:32 +01:00
PKEuS 96ae010e48 - Correctly set Scope::function variable in symboldatabase
- Refactorizations
- Fixed some cppcheck warnings
2012-01-21 10:08:09 +01:00
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
Stefan Weil 7607e4c68d Fixed #3519 (Wrong line number in warning charBitOpError) 2012-01-18 13:09:46 +01:00
PKEuS c294b15360 Removed more indendation counters. 2012-01-15 12:31:49 +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
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
Reijo Tomperi 65b58bcb99 Partial fix to #3452 (ErrorLogger: complain/raise assertion when error message has extra newlines etc)
http://sourceforge.net/apps/trac/cppcheck/ticket/3452
Add assert for newlines.
2011-12-30 01:22:16 +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 90e1a397a2 Refactoring: Remove duplicate function from tokenizer: code_is_c() -> isC() 2011-12-29 00:36:16 +02:00
Edoardo Prezioso bbac4f1faf Fix ticket #3451 (A (style) type warning witout message text). 2011-12-28 17:15:04 +01:00
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 fd0d9c8694 CheckOther: Added line break to make the code more readable 2011-12-20 20:54:14 +01:00
Daniel Marjamäki f8181df340 Fixed #3410 (Comparing bool against bool produces false positive) 2011-12-20 06:38:05 +01:00
PKEuS 6dc2a6e7ab Refactorized CheckUnusedVar 2011-12-18 20:15:41 +01:00
PKEuS 0205582161 Fixed #3327 (printf with std::string as parameter) 2011-12-18 19:41:21 +01:00
PKEuS f306246c7f Improved support for references and pointers in SymbolDatabase
Replaced several isPointer functions by Variable::isPointer function
Refactorizations & Make use of symbolDatabase more often
2011-12-17 19:04:03 +01:00
PKEuS 4abee3a345 Refactorings. Use reportError instead of reportInconclusiveError. 2011-12-17 11:39:20 +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 91a0a071d0 Take symbol database into use or improve its usage in some checks. 2011-12-09 23:28:10 +02:00
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 501d7ccb2d Optimize checkother.cpp by taking symbolDatabase into use. 2011-12-04 20:49:01 +02:00
PKEuS 1f438b0505 Fixed #3375 (Improve check: Detect unreachable code) 2011-12-03 11:43:23 +01:00
Daniel Marjamäki 69d3d4a17d Fixed gcc compiler warnings 2011-12-03 09:57:56 +01:00
Daniel Marjamäki 9a84c5845a Fixed #3373 (False posititive: incorrect %* handling in sscanf) 2011-12-02 17:09:32 +01:00
Richard Quirk d2c8b9be56 Fix possible null pointer dereference 2011-12-01 19:57:04 +01:00
Richard Quirk b2ea78543b Fix false positive with non-const function calls 2011-12-01 19:57:04 +01:00
Richard Quirk a880469c5a Refactor the same expression check
Work out if a function is inconclusive when creating the entry in the
Expressions class instead of when checking the counts at the end. Store
the result in a new bool flag in the ExpressionTokens helper struct.

The pointer to symbol database and ref to list of const functions are
temporarily stored in  the Expressions helper class to avoid passing
them in too on every endExpr(tok) call.

Use a const reference to ExpressionTokens in the check loop to avoid
repeating the it->second several times, which clarifies what that code
does.
2011-12-01 19:57:04 +01:00
PKEuS 5017646488 Coding fixes and refactorings 2011-12-01 19:43:51 +01:00
Daniel Marjamäki 93b21c6cc5 Fixed Visual Studio compiler warnings 2011-12-01 18:27:25 +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 fddfd16758 checkDuplicateExpressions: validate tokens instead of string. Fix for my previous commit. 2011-12-01 17:43:29 +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
Edoardo Prezioso 767413adad 1)internal check found a 'findmatch' with simple string argument;
2)Style: uniform 'while (...)' when inside it there's an assignment;
3)Replace '0' with 'NULL' where there's comparison with a pointer.
2011-12-01 12:04:47 +01:00
PKEuS ee3e10ea97 Fixed #3364 (Crash in printf parsing) 2011-11-30 20:23:29 +01:00
Daniel Marjamäki 0d48cd390b astyle formatting 2011-11-29 20:44:23 +01:00
Edoardo Prezioso 5c90c69ccf Fixed ticket #3366 (Build breakage) 2011-11-29 19:46:36 +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
PKEuS 6b1594244e code cleanups and refactorings 2011-11-26 21:15:16 +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 2e08c8c5b1 DJGPP: Fixed a few compiler errors by using std::size_t instead of size_t 2011-11-22 21:14:14 +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
Edoardo Prezioso a32b05197d Change every 'tokAt(1)' to 'next()' and every 'tokAt(-1)' to 'previous()'.
Added a safety check to ensure that a 'previous()' call doesn't crash (not sure if it's needed or not).
2011-11-20 15:59:37 +01:00
Edoardo Prezioso 11dd3c09ce Change every 'tokAt(1)->' to 'next()->' because 'tokAt(1) == 0' is equivalent to 'next() == 0', hence the equivalent cppcheck crash. 2011-11-20 15:09:57 +01:00
Edoardo Prezioso 42e369a4b4 Change every 'tokAt(..)->link()' to 'linkAt(..)'. 2011-11-20 14:24:27 +01:00
Marek Zmysłowski 994f08fdf0 Fixed #886 (new check: wrong value passed to isgraph function) 2011-11-17 16:31:16 +01:00
Edoardo Prezioso 2c64d299ca Change every 'tokAt(...)->str()' to 'strAt(...)'. 2011-11-13 13:10:59 +01:00
Thomas Jarosch c010ca33a5 Run astyle 2011-11-09 20:34:58 +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 f092779a4d Fixed #3282 (Invalid report that an array index is of type char.) 2011-11-06 11:26:28 +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
Daniel Marjamäki d4a8184339 Fixed #3251 (Redundant code: Found a statement that begins with numeric constant) 2011-11-05 20:28:52 +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 4295439e53 Fixed ticket #3269 (Regression, I think it's somehow related to symbol database) 2011-10-31 15:05:52 +01:00
Edoardo Prezioso ba5909ef1d General code tweaking, nothing strange. 2011-10-31 02:24:59 +01:00
Edoardo Prezioso 4fc7e86d7d Fixed: with checkConst and checkVariableScope wanted still required "information" settings instead of "style". 2011-10-30 10:58:15 +01:00
Daniel Marjamäki 3c509589b5 use reportInconclusiveError instead of reportError if checking is inconclusive 2011-10-29 15:16:27 +02:00
Daniel Marjamäki f04210ad9f updated comment. removed a inconclusive condition, I don't think it's needed. 2011-10-29 12:52:46 +02:00
Daniel Marjamäki 6c02de151f strncmp sizeof: tweaked the check. 2011-10-29 12:27:19 +02:00
Daniel Marjamäki 8416768e03 Merge pull request #50 from richq/strncmp
Improved strncmp checks
 * strings are always the same
 * inconclusive: using sizeof(char *) as size parameter
2011-10-29 03:13:21 -07:00
Richard Quirk 45d0709ed5 Only run sizeof(char*) check if inconclusive is set 2011-10-29 11:59:24 +02:00
Richard Quirk c2d7824130 Move string comparison out of the report function 2011-10-29 11:52:19 +02:00
Edoardo Prezioso dd719b41bf Definitely check correctly 'sizeof %num%' when '%num%' has '-' sign. 2011-10-29 00:11:38 +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
Richard Quirk 90c7db15a0 Add check for comparison of identical string variables 2011-10-28 22:12:51 +02:00