Commit Graph

8655 Commits

Author SHA1 Message Date
Daniel Marjamäki e53be26f48 Try to fix Travis 2018-11-02 19:04:21 +01:00
Daniel Marjamäki 16cc20a232 ValueFlow: Better handling of container size values 2018-11-02 18:28:32 +01:00
Daniel Marjamäki 3798feecad TemplateSimplifier : Remove 'class|struct' in template arguments 2018-11-02 14:49:40 +01:00
rikardfalkeborn 869e4ba6ab Add check for return value of boolean function (#1451)
* Add check for return value of boolean function

The rule for converting an integer to a boolean is that 0 is mapped to
false and everything else is mapped to true. There is nothing wrong with
the following code (according to the standards):

    bool f()
    {
        return -1;
    }

and neither gcc nor clang will warn about it. However, it's a bit
confusing. This commit adds a check that warns when a value other than 0
or 1 is returned from a boolean function (similar to the existing check
that functions with boolean arguments are only passed 0 or 1). Since the
code is perfectly legal, set the severity to "Style".

* Use early continue and remove some braces

* Add testcase with multiple returns

* Avoid null pointer dereference in case of return without operand

* Skip lambdas

Add TODO-test cases that shows FPs when the return type of lambdas are
specified explicitly (this is a problem with findLambdaEndToken).

* Enable testcases
2018-11-01 11:08:16 +01:00
rikardfalkeborn 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
Paul Fultz II 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
amai 3032ac4619 Fix compile error in test code 2018-10-28 21:36:28 +01:00
Daniel Marjamäki c03d32b429 ValueFlow: Improve containerSize handling of string like classes 2018-10-28 19:14:00 +01:00
Daniel Marjamäki 8beb42cc90 astyle formatting
[ci skip]
2018-10-28 17:37:19 +01:00
Paul Fultz II 2b6cc33dc6 Fix issue 8757: Throw syntax error on invalid code (#1378)
* Fix issue 8757: Throw syntax error on invalid code

* Fix FP with lambda returns

* Remove double percent

* Check more keywords

* Skip preprocessor directives

* Check for valid PP directive

* Fix preprocessor check

* Dont check for preprocessor directives
2018-10-28 17:17:53 +01:00
Paul Fultz II f5811c6818 Fix issue 8732: Syntax error when using enable_if (#1453)
* Fix issue 8732: Syntax error when using enable_if

* Fix FPs

* Use simpleMatch
2018-10-28 17:16:31 +01:00
Daniel Marjamäki 06ede9c239 ValueFlow: handle x+=y for containers 2018-10-27 18:38:04 +02:00
orbitcowboy b998dcb5aa gnu.cfg: Added support for '__builtin_memset'. 2018-10-27 18:25:05 +02:00
IOBYTE adbbadec7f Fixed #8798 (template simplifier: wrong simpifications for namespaces) (#1452) 2018-10-26 14:20:13 +02:00
Daniel Marjamäki ab08801dc4 Remove header tests from testconstructors, because they were invalid (using preprocessor directive)
The checker does not care if it's a header or source file. So I guess these tests were added to test
some parsing problem. Nowadays, #line is removed by simplecpp::preprocess, but there is no proper
testing for it in simplecpp.. I will add some testing for #line asap.
2018-10-26 07:03:15 +02:00
Kamil Dudka d206047b84 Fixed #8794 - Memory leak false positive triggered by !(x != NULL) (#1450) 2018-10-26 06:21:45 +02:00
Daniel Marjamäki b8e8b12783 Fixed #8797 (exprDependsOnThis handle method call in non-inline method) 2018-10-24 20:17:00 +02:00
Daniel Marjamäki 2348dcde6c #8801: Quick fix for false positives 2018-10-24 19:57:50 +02:00
IOBYTE 0763fdbfad Copy template default argument values from forward declaration to declaration. (#1447)
It is possible to define default template parameter values in forward
declarations and not define any in the actual declaration.  Cppcheck
ignores forward declarations and only uses the default values in the
actual declaration so default values in forward declarations are copied
to the actual declaration when necessary.
2018-10-24 14:38:59 +02:00
Daniel Marjamäki 15160f1691 Fixed #8788 (AST Broken error from assigning lambda to variable) 2018-10-22 17:25:01 +02:00
Daniel Marjamäki dc38681a56 Remove FIXME in AST validation. Ticket #8749 2018-10-22 11:37:24 +02:00
Daniel Marjamäki c483bcb12b Fixed testrunner 2018-10-22 00:28:09 +02:00
Daniel Marjamäki f9b132e831 Tokenizer::simplifyTypedef: Fix bug with arrays 2018-10-21 21:15:34 +02:00
Paul Fultz II edde0eedaa Fix FP issue 8801: Condition 'a+b' is always true (#1444) 2018-10-21 08:04:00 +02:00
Paul Fultz II 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
Daniel Marjamäki 14afc3fd3a Fixed #8796 (Tokenizer::simplifyCompoundAssignment: Wrong simplification of return) 2018-10-20 21:33:43 +02:00
Daniel Marjamäki 29feaa5a51 Tokenizer: Avoid constant folding 2018-10-20 10:51:50 +02:00
Daniel Marjamäki d265a0d6ab Fixed #8798 (SymbolDatabase: Inner unnamed union) 2018-10-20 09:43:08 +02:00
orbitcowboy 0858488825
insecureCmdLineArgs: Fixed FN in case strdup() copies argv[]. (#1438)
* insecureCmdLineArgs: Fixed FN in case strdup() copies argv[].

* Formatted the code. There are no functional changes intended.

* Changes due to review comments from Daniel.
2018-10-19 11:04:15 +02:00
rikardfalkeborn 402d0c565f Fix false positive: Invalid string argument with array (#1439) 2018-10-19 07:48:47 +02:00
Paul Fultz II 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
Daniel Marjamäki 465db2dff7 Fixed #8786 (internalAstError on valid code with C style cast) 2018-10-18 20:17:23 +02:00
Daniel Marjamäki 4983a6a5dc astyle formatting 2018-10-18 20:08:32 +02:00
Paul Fultz II 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
Paul Fultz II 58d1de5814 Expand the duplicate variable assignment warnings when the inconclusive flag is used (#1433)
* Warn for more duplicate var expressions when inconclusive is set

* Fix issue with missing function name
2018-10-17 06:57:33 +02:00
Igor 0a9be3e734 Improve STL iterators checking (#1380)
* Improve STL interators checking

* Improve error messages for container iterators from different scopes

* Mini refactoring

* Replace hardcoded pattern to ValueType::Type::ITERATOR

* Error messages improvements, more tests and refactoring

* Refactoring after code review

* Put getting operand data into separate function

* Update getErrorMessages and iterator errors ids

* Refactoring

* Fix error

* Refactoring, early return implementation

* Delete redundant code

* Tiny changes in comments
2018-10-17 06:36:51 +02:00
Daniel Marjamäki 1245a036f7 Add check for shadow variables 2018-10-16 20:17:27 +02:00
rikardfalkeborn f1074ea1ab Fix false positive: Invalid string argument with pointer to pointer (#1427)
If the address is taken inside an array, the address is not of a single
character, so do not warn about this.
2018-10-16 06:54:25 +02:00
IOBYTE 290563b964 Fix specialized template regression. (#1425)
* Fix specialized template regression.

Only check for instantiation of template being processed rather than
count of all instantiations.

* Add 2 more tests.
2018-10-15 19:35:26 +02:00
orbitcowboy a6e8270474
insecureCmdLineArgs: Fixed false negatives in case arguments are const. (#1419)
* insecureCmdLineArgs: Fixed false negatives in case arguments are const.

* Formatted the code, there are functional changes.

* Simplified matching as suggested by Daniel.
2018-10-15 10:05:43 +02:00
rikardfalkeborn 613dc19b68 #4241: Check for address of single character passed as string (#1381)
* #4241: Check for address of single character passed as string

Add a check that address of a single character is not passed as argument
to argument marked as strings (using strz). The check does not warn if
the address of a character with known value '\0'.

Since ValueFlow currently does not handle global constants (see #7597),
do not warn if the variable is global to avoid FPs when the address of
a global variable assigned to '\0' is passed to a function expecting a
string.

Remove comment in docs saying strz is unused.

* Change asdf to Hello world

* Add test of address to first element in string

* Add error reporting function to getErrorMessages

* Fix strings in test
2018-10-14 18:49:34 +02:00
IOBYTE 0a30768b59 Fixed #8693 (Template specialization: Constructor detected as normal … (#1418)
* Fixed #8693 (Template specialization: Constructor detected as normal function (functionStatic error))

Refactor template simplifier to remove the existing full specialization
function expandSpecialized and allow full specializations to use the
existing function expandTemplate.  The function expandTemplate was
modified to either expand the template like it originally did by copying
it or to modify the template in place.  Both instantiated and
uninstantiated full specializations are modified in place.  This also
fixes #8692 and probably other related tickets as well.

The function simplifyTemplates now tries twice to simplify templates so
more templates can be simplified.  We should try as many times as
necessary to find all possible templates.  We can't do that now because
uninstantiated templates are left unchanged.  It is relatively straight
forward to have the new code also expand in place uninstantiated
templates with their symbolic types but namespaces are not handled
properly (ticket #8671) and it would introduce regressions.

* Fix travis warnings.
2018-10-14 16:57:07 +02:00
Daniel Marjamäki 140b0b5ae9 astyle formatting
[ci skip]
2018-10-13 18:42:09 +02:00
Paul Fultz II 9cf092657c Skip some ast errors to avoid regressions (#1422)
* Skip some ast errors to avoid regressions

* Use simpleMatch

* Skip operator functions

* Add a test for issue 8788
2018-10-13 18:38:44 +02:00
Daniel Marjamäki 7833ade128 Updated copyright year 2018-10-13 18:20:31 +02:00
Daniel Marjamäki 7eb5ebe17e Fixed #7887 (User function 'search' is wrongly mixed with std function) 2018-10-10 17:35:53 +02:00
Daniel Marjamäki c048bd45f6 Refactor test code 2018-10-10 14:35:58 +02:00
Daniel Marjamäki 25cbfe27cf Partial fix for #7887, Improved tokenizer simplification of 'using namespace std;' - do not simplify user functions 2018-10-10 14:28:53 +02:00
Daniel Marjamäki 053b0d1654 STL: enable inconclusive warnings with --inconclusive 2018-10-09 20:10:43 +02:00
rikardfalkeborn 75caf8e4de Fix #8230: FP unknown evaluation order on comma expression in while clause (#1415)
The while part of a do-while loop looks almost like a function call, so
extend the check for function calls to ignore while-statements.

Note that there was only an FP when checking c-code, since the check is
disabled for c++-code. Therefore, make sure the test cases are run on a
c-file.
2018-10-09 14:44:01 +02:00
Daniel Marjamäki 20121b34d8 Fixed #7718 (False positive: out of bounds of already resized std::string) 2018-10-09 06:53:26 +02:00
Daniel Marjamäki aa58f41e6d Fixed #7152 (False positive for redundantAssignment after calling a lambda function) 2018-10-08 21:07:21 +02:00
PKEuS 86a1b84b0c Fixed handling of macros with known value defined in header file in configuration splitting (#8404)
Added proper unit test for configuration validation to ensure that it actually works when cppcheck is executed
2018-10-08 16:38:47 +02:00
Daniel Marjamäki c3e6e7c338 Fixed #8664 (setVarId: Wrongly set varid for lambda argument) 2018-10-07 20:40:59 +02:00
Daniel Marjamäki f961324d45 Fixed #8735 (FP oppositeInnerCondition - regression) 2018-10-07 18:30:29 +02:00
orbitcowboy 54c5d09ed3 test:std.cpp: Removed duplicate include <csetjmp>. 2018-10-06 00:23:14 +02:00
Paul Fultz II e170a45230 Enable followVar for opposite expressions (#1404)
Enable followVar for opposite expressions
2018-10-04 21:17:47 +02:00
Daniel Marjamäki a31db92918 Fixed #8669 (operator>> causes wrong style message) 2018-10-03 13:00:11 +02:00
Paul Fultz II 1fe1ec09a8 Reenable follow var for logical conjunction (#1400) 2018-10-01 14:40:03 +02:00
Paul Fultz II 2c91b95d2a Reenable followVar for multicondition (#1401) 2018-10-01 14:34:55 +02:00
Paul Fultz II 4598995564 Enable followVar for duplicate ternary expressions (#1406) 2018-10-01 14:31:06 +02:00
rikardfalkeborn b3fef7957a Fix FP with fclose after comma (#7525) (#1407) 2018-10-01 11:58:27 +02:00
Paul Fultz II 4ed22f1ff8 Fix some FPs in mismatchingContainerExpression (#1402) 2018-09-30 14:49:58 +02:00
amai 5c0fd0d5b4 Skip some test on cygwin since interface is not available 2018-09-29 16:49:12 +02:00
Paul Fultz II 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
Daniel Marjamäki 9dccc4037b Fixed #8747 (Syntax error, AST broken (a = --*b)) 2018-09-27 19:26:08 +02:00
IOBYTE 33b74a04ab Add union support to template simplifier. (#1398) 2018-09-26 06:23:12 +02:00
orbitcowboy 2bbe73e04a
Fixed compiler warning from VS2017: testsuppressions.cpp(450): warning C4458: declaration of 'errmsg' hides class member. (#1397) 2018-09-25 17:19:25 +02:00
orbitcowboy 879803c90f gnu.cfg: Fixed FP (nullpointer) when third parameter of epoll_ctl is set to NULL. 2018-09-25 09:07:49 +02:00
rikardfalkeborn 5e120b567c isVariableDeclaration: Handle pointer to const pointer (#1395)
isVariableDeclaration did not handle pointer to const pointer, or
pointer to volatile pointer. This resulted in FPs in examples like the
following:

    class Fred {
        public:
        const char *const *data;
        const char *const *getData() { return data; };
    }

where cppcheck would say getData could be static, since it didn't
recognize const char *const *data as a variable declaration.
2018-09-25 06:19:26 +02:00
orbitcowboy 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
Paul Fultz II 5bebeec224 Fix issue 8775: Dont follow aliased variables (#1390) 2018-09-24 06:37:47 +02:00
Daniel Marjamäki afe09f4d7a Temporarily comment out the followVariable() handling 2018-09-23 16:03:18 +02:00
Simon Martin 6bde2445a6 Ticket #8632: Parenthesize ternary operator operands containing < to avoid wrongly thinking a template instantiation is met. (#1389) 2018-09-23 10:27:38 +02:00
Simon Martin 915acac0b8 Ticket #8734: Skip static member variables in CheckUninitVar. (#1388) 2018-09-22 16:52:34 +02:00
Paul Fultz II d43cd56afd Show line number when suggesting std::transform (#1385) 2018-09-21 10:38:30 +02:00
orbitcowboy a26ac4d266 Running astyle. There is no functional change intended. 2018-09-21 08:53:09 +02:00
Paul Fultz II 1e347f6cde Initial check for recommending algorithms (#1352)
Add initial check for loop algorithms
2018-09-19 18:58:59 +02:00
shikamu 83cb0b3394 --suppress on line 0 (#1354)
Fixed --suppress on line 0
2018-09-18 12:58:14 +02:00
IOBYTE e9a44f70b2 Remove out of line member functions of instantiated template classes. (#1377)
* Remove out of line member functions of instantiated template classes.
2018-09-14 14:16:34 +02:00
Paul Fultz II 4e7ed9ea6e More robust checking for crashes in followVar (#1375)
More robust checking for crashes in followVar
2018-09-13 09:19:15 +02:00
Paul Fultz II eb07280075 Fix issue 8743: FP when derefencing iterators (#1376) 2018-09-12 17:33:53 +02:00
Paul Fultz II 90a29d986b Fix issue 8730: Dont follow variables with unknown symbols (#1374) 2018-09-12 17:30:18 +02:00
orbitcowboy 399a90c00e #8383: Segmentation fault on garbage code. Added regression test. 2018-09-10 16:28:32 +02:00
orbitcowboy 95da9f77c4 #8385: Segmentation fault on garbage code. Added regression test. 2018-09-10 16:24:09 +02:00
orbitcowboy bc84ce43ec #8265: Segmentation fault on garbage code. Added regression test. 2018-09-10 16:17:44 +02:00
amai2012 4b249877f1 #8709 Add stability regression test 2018-09-10 08:40:53 +02:00
Daniel Marjamäki 523a9c1c4a Fixed #8746 (Syntax error, AST broken (using a::operator=)) 2018-09-09 21:11:45 +02:00
Daniel Marjamäki 404eb6c746 Fixed #8745 (Syntax error: AST broken (or)) 2018-09-09 16:41:06 +02:00
Daniel Marjamäki 772939476d Remove inconclusive warnings about reading empty stl container. We have better ValueFlow-based checking. 2018-09-09 11:25:04 +02:00
Daniel Marjamäki b3f12fcc7e astyle formatting
[ci skip]
2018-09-09 07:10:37 +02:00
Paul Fultz II f4f3f81e8f Fix issue 8741: Require pure when following variables in isSameExpression (#1373) 2018-09-09 07:08:32 +02:00
Paul Fultz II fa40b821e6 Fix issue 8740: Add a pass to check for valid operators (#1372) 2018-09-08 21:10:34 +02:00
Daniel Marjamäki 509cb35168 astyle formatting
[ci skip]
2018-09-08 15:19:32 +02:00
tam do thanh 7ad09b44c3 Ticket 7792: Suppression both exit_code and syntaxError when call cppcheck suppressions (#1345) 2018-09-08 11:09:49 +02:00
Daniel Marjamäki d7de46f50e ValueFlow: Fix false positive for container size 2018-09-08 10:43:08 +02:00
Daniel Marjamäki 738fb1b23a Disabled CheckClass::checkCopyCtorAndEqOperator because of FP (#8388) 2018-09-08 09:14:02 +02:00
Paul Fultz II cb03b9883f Fix issue 8737: FP with identical inner condition due to followVar (#1371) 2018-09-07 20:16:38 +02:00
Paul Fultz II 5a2362b2a0 Fix issue 8738: Dont warn about multiconditions when value is known (#1369) 2018-09-07 15:02:34 +02:00
Paul Fultz II f7e7e9bd3c Fix issue 8736: Iterators to containers from different expressions (a.begin().x == b.begin().x) (#1370) 2018-09-07 07:08:02 +02:00
Paul Fultz II 2da958efb5 Fix issue 8722: Avoid duplicate messages due for followVar (#1367) 2018-09-06 06:55:36 +02:00
Paul Fultz II b46e25c18e Fix issue 8730: False positive: Opposite expression on both sides of && (#1366) 2018-09-05 18:07:01 +02:00
Simon Martin 1d85a78874 Ticket #8654: Properly setup links for variadic template bases. (#1357) 2018-09-05 14:10:56 +02:00
Paul Fultz II 08f301a0de Reenable followVar (#1363)
Reenable followVar
2018-09-05 05:53:33 +02:00
Daniel Marjamäki c6d43506b6 ValueFlow: Fix FP in switch 2018-09-04 20:28:48 +02:00
Daniel Marjamäki 3a8bdad20a Fixed #8232 (segmentation fault on valid C++ code in isOppositeCond()) 2018-09-04 18:10:31 +02:00
orbitcowboy 361ae311f6 cmdlineparser: Stop processing in case an invalid path for --includes-file=<PATH> and --config-excludes-file=<PATH> is provided. 2018-09-04 16:37:43 +02:00
Daniel Marjamäki 5afb755a3c SymbolDatabase: Fix variable matching 2018-09-04 06:39:02 +02:00
Paul Fultz II 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
Paul Fultz II 0e5fabf4dc Dont follow volatile variables (#1365) 2018-09-03 19:51:48 +02:00
Daniel Marjamäki 756c1d8de7 Fixed #8341 (error:iterators not correct) 2018-09-02 21:04:45 +02:00
IOBYTE 7224ee27d9 Fixed #8122 (simplifyTemplates: constructor outside template class not simplified properly) (#1361) 2018-09-02 17:49:13 +02:00
Daniel Marjamäki cc402869a6 Fixed #8689 (False positive: containerOutOfBounds after function call) 2018-09-02 14:08:34 +02:00
IOBYTE 341dee4a07 Fixed #8725 (Template out of line function return type missing when instantiated.) (#1360) 2018-09-02 08:35:05 +02:00
Paul Fultz II 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
IOBYTE 508e8c234b Fixed #8683 (Using deleted token with multiple template instantiations.) (#1353)
* Fixed #8683 (Using deleted token with multiple template instantiations.)

* Fixed #8321 (heap use after free: templatesimplifier)

* Add a flag to Token indicating that it has a pointer to it.

* Run dmake

* Fix one source of list pointers to deleted tokens.

Refactor TemplateSimplifier class to get access to template lists.
Remove many function parameters now that they are class variables.
Fix one source of list pointers to deleted tokens.
Add tests with no output to catch crashes.

* Run dmake again.

* Make 2 more functions private.

* Make requested changes.

* Missed one change request.

* Use TokenList rather than Tokenizer.

* Move TokenAndName constructor to cpp file so token.h is not needed in header file.
2018-09-01 11:26:10 +02:00
Daniel Marjamäki a331206b44 Temporarily disable followVariableExpressions(), there are problems that should be fixed. 2018-09-01 08:32:06 +02:00
Daniel Marjamäki f388c77042 Fixed #8721 (Regression: False positive array index out of bounds) 2018-08-31 18:25:43 +02:00
Daniel Marjamäki 7591616f43 Fixed #8710 (Update message duplicateExpression when operand is integer literal) 2018-08-30 18:28:34 +02:00
Daniel Marjamäki 27aae8d032 Fixed #8644 (crash (CheckBufferOverrun::checkGlobalAndLocalVariable): local function) 2018-08-30 10:04:07 +02:00
Daniel Marjamäki 6223204a06 Fixed #8708 (FP: Accessing an item in container that is empty) 2018-08-27 13:49:47 +02:00
Paul Fultz II 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
Simon Martin acb0b9f07e Ticket #8679: Add support for C++11 thread_local and GCC's (among others) __thread extension. (#1351) 2018-08-26 19:46:36 +02:00
Paul Fultz II a5f4c5d0eb Improve message for same expressions (#1349)
* Improve message for same expressions

* Update message
2018-08-25 14:25:31 +02:00
Paul Fultz II f79849f6ba Diagnose mismatching iterators used together in operators (#1343)
* Diagnose mismatching iterators used together in operators

* Fix fp getting iterator expression in function call
2018-08-21 06:34:30 +02:00
Daniel Marjamäki 866d198756 Fixed #8697 (noreturn output stream) 2018-08-21 06:32:33 +02:00
Daniel Marjamäki 4d78a2e178 Fixed #7790 (Wrong order of <location> XML-elements for error duplInheritedMember) 2018-08-19 14:13:58 +02:00
Daniel Marjamäki 43233e72b2 Fixed #8691 (False negative for uselessAssignmentArg) 2018-08-17 19:56:36 +02:00
Kevin Kendzia c5ebf26f9f cppcheck.cpp: fix suppression of syntaxError (#1333)
* cppcheck.cpp: fix suppression of syntaxError

* test: add supression test for syntaxError while file read
2018-08-17 10:05:25 +02:00
Sylvain Joubert 13617375df missingOverride: False positive with cv-ref mismatch (#1340) 2018-08-17 08:42:22 +02:00
Sebastian 78715d3eff
bsd.cfg: Add arc4random* functions with tests. (#1344)
Reference: https://www.freebsd.org/cgi/man.cgi?query=arc4random
2018-08-16 21:37:40 +02:00
tam do thanh f33c09f1a7 Allow syntax "typedef 'typename' unsigned 'typename' (functon_name)()" (#1334)
* Allow syntax "typedef 'typename' unsigned 'typename' (functon_name)()" for some old libraries
https://trac.cppcheck.net/ticket/7792

* Unnecessary check of "tokOffset", match-function already checks if it is null

* add testcase ticket #7792: simplifyTypedef124
2018-08-16 14:30:28 +02:00
Daniel Marjamäki fc97a5b11c Uninitalized variables: Fixed false positive 2018-08-15 18:04:36 +02:00
Daniel Marjamäki 2f834c3c3b Fixed #8688 (False positive: containerOutOfBounds) 2018-08-13 21:27:29 +02:00
Paul Fultz II c5154286da Fix issue 8687: false positive with same expression (#1336) 2018-08-13 12:55:41 +02:00
Daniel Marjamäki 55ab842083 valueFlowSizeForward: Bailout when function calls modify the container size 2018-08-13 06:54:18 +02:00
Daniel Marjamäki 183345a939 valueFlowContainerSize: Fix FP when container size is changed 2018-08-12 22:23:19 +02:00
Daniel Marjamäki 7074eeb869 valueFlowContainerSize: assignment of string-like containers 2018-08-12 22:01:58 +02:00
Daniel Marjamäki 189ea5003a valueFlowContainerSize: empty container variables 2018-08-12 14:41:00 +02:00
Daniel Marjamäki be4ae66e36 Fix wrong message 2018-08-12 08:01:15 +02:00
Daniel Marjamäki 0e30bdef9d containerAccessOutOfBounds: Fix FPs for maps etc 2018-08-11 18:57:21 +02:00
Daniel Marjamäki 811a71aa06 valueFlowContainerSize: Handle guard logic 2018-08-11 15:08:54 +02:00
Daniel Marjamäki 6008bbdfb4 valueFlowContainerSize: Fix wrong value after condition if conditional code escapes 2018-08-11 13:49:42 +02:00
Daniel Marjamäki 1f427eda8f CheckStl: rewrite and refactor out of bounds checker 2018-08-11 11:40:48 +02:00
Daniel Marjamäki 10461e5429 valueFlowContainerSize: forward analysis inside conditional code 2018-08-10 22:18:38 +02:00
Daniel Marjamäki 4a502a7f6b valueFlowContainerSize: add simple forward analysis 2018-08-10 22:06:23 +02:00
Daniel Marjamäki 2b10e38eec valueFlowContainerSize: handling of 'v.size() == 10' 2018-08-10 21:43:47 +02:00
Paul Fultz II 3947c23290 Fix issue 8369: False negative: Condition 'condition' is always true (#1325)
* Fix issue 8369: False negative: Condition 'condition' is always true

* Use simpleMatch

* Add iterator header

* Cleanup

* Remove unused variable
2018-08-10 18:05:23 +02:00
Daniel Marjamäki 907f81d059 ValueFlow: Improved analysis of container size 2018-08-10 11:53:56 +02:00
Daniel Marjamäki 81f54f7094 Fixed #8681 (ValueFlow: Container size) 2018-08-10 11:29:16 +02:00
Daniel Marjamäki f2e7071922 Fix FP, conversion of char literal '\0' to boolean is not true 2018-08-08 19:04:10 +02:00
Daniel Marjamäki 1f1c44a04f Fixed #8677 (False positive: unused method) 2018-08-08 11:31:35 +02:00
Paul Fultz II 80290a15e0 Fix FP with duplicate assign (#1330) 2018-08-08 08:31:31 +02:00
Daniel Marjamäki c3a44ce56b astyle formatting
[ci skip]
2018-08-07 18:06:51 +02:00
Daniel Marjamäki 78df7f98dd Fixed #8674 (False positive: Method that returns const should not be const) 2018-08-07 18:06:14 +02:00
Paul Fultz II 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.

* Check if the tokens are the same

* Report the operator and not the expressions
2018-08-07 09:32:16 +02:00
Daniel Marjamäki 1b933f4dd1 astyle formatting
[ci skip]
2018-08-05 22:40:21 +02:00
Paul Fultz II 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
Daniel Marjamäki d8997bb43f Fix testrunner 2018-08-05 14:01:24 +02:00
Daniel Marjamäki 0e491b41a8 Clarify warning message for 'Same expression on both sides of operator' 2018-08-05 10:48:02 +02:00
Paul Fultz II ed197f235a Fix issue 4693: Diagnostic when using the same iterators to an algorithm (#1326)
* Fix issue 4693: Diagnostic when using the same iterators to an algorithm

* Update classinfo
2018-08-05 09:10:54 +02:00
rikardfalkeborn 710d7ce015 Add checks of log2 and log1p range (#1324)
* Add tests for log10{,f,l} valid arguments

* Add log2{,f,l} to checkfunctions

* Add log1p{,f,l} to checkfunctions

* checkfunctions: Simplify check for log function limit out of range

The conditions for negative and non-negative int and float were
identical so the call to isNegative can be removed and the if-statements
be simplified.
2018-08-03 12:14:39 +02:00
Paul Fultz II 0d35a96594 Improve checking of mismatch iterators (#1293) 2018-07-26 22:00:48 +02:00
Daniel Marjamäki 54e2726bf3 Fixed #8636 (Misleading verbose message if virtual method called from destructor) 2018-07-26 09:16:17 +02:00
Daniel Marjamäki fc5d8e5082 TestSuite: Allow that verbose messages are reported in a test 2018-07-26 09:15:33 +02:00
Daniel Marjamäki c666f74755 astyle formatting
[ci skip]
2018-07-25 23:02:16 +02:00
Paul Fultz II f093692551 ValueFlow: Set values in else branch even when the first branch modifies the value (#1309)
* Set values in else branch even when the first branch modifies the value

* Move tests

* Add check for goto

* Remvoe todo

* Also check scope is noreturn

* Use isEscapeScope when variables are changed
2018-07-25 22:59:54 +02:00
Daniel Marjamäki f9a5a114bb astyle formatting
[ci skip]
2018-07-25 07:44:06 +02:00
Paul Fultz II 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
lordylike 12e58c8521 fix ticket 8570: passedByValue with member initializer list and std::move (#1316)
* fix ticket 8570

allow member initializer list variables that are moved to be non-const

* review feedback

* replace tabs with spaces in test code
2018-07-22 15:01:18 +02:00
Daniel Marjamäki 77b653bf94 Clarify warnings when char literals are converted to bool in conditions 2018-07-21 18:40:06 +02:00
Sebastian f862cf603f
posix.cfg: Add some pthread_mutex_* functions. (#1320)
References:
http://pubs.opengroup.org/onlinepubs/9699919799/functions/pthread_mutex_init.html
http://pubs.opengroup.org/onlinepubs/9699919799/functions/pthread_mutex_lock.html
2018-07-21 17:52:12 +02:00
rikardfalkeborn 30a8d953e3 Move sqrt{,f,l} argument checks to cfg file (#1313) 2018-07-20 20:56:39 +02:00
Sebastian 4ef452132c
posix.cfg,gnu.cfg: Add (get|set)hostname functions. (#1315)
Reference for POSIX gethostname:
http://pubs.opengroup.org/onlinepubs/9699919799/functions/gethostname.html
Reference for sethostname:
http://man7.org/linux/man-pages/man2/gethostname.2.html
2018-07-18 09:40:06 +02:00
Daniel Marjamäki 7c4820e047 Rename Library::isargvalid() 2018-07-15 23:05:48 +02:00
rikardfalkeborn 491ee577c6 Support floats in valid config (#1297)
* Add tests for invalid ranges

* Refactor loadLibErrors

This reduces the amount of code slightly and will simplify adding
more tests.

* Handle empty valid field

Before this change, the sequence <valid></valid> in a config file would
result in a segmentation fault. Now an empty field results in the error
message:

cppcheck: Failed to load library configuration file 'mycfg.cfg'. Bad attribute value '""'

* Add support for valid for floating point arguments

Previously, it was not possible to add valid ranges to floating point
arguments since it only handled integers. This made ranges not work well
for floating point arguments since arguments were cast to integers
before the ranges were handled.

Fix this by using doubles instead of integers if the argument is a float.
Add some tests for this and make sure errors are printed with enough
precision (somewhat arbitrarily chosen).

Note that it is still only possible to add integer ranges (i.e. -1:1).

* Add support for floats in configuration valid range

Now that it is possible to handle decimal arguments, there is no reason
to not allow non-integer ranges. Take care to not allow broken
configurations.

* Move check to within if-clause

* Move asin{,f,l} and acos{,f,l} input checks to config file
2018-07-15 22:47:56 +02:00
rikardfalkeborn 0e639ea7c9 runtest.sh: Bugfix cfg dir when run in test/cfg (#1311)
Commit 5cc8da2db4 introduced syntax checking of xml-files. This broke
running the file directly in the test/cfg folder since it assumed the
config files to check were located in cfg in the current working
directory. Fix this by adding a variable that holds the correct path.
2018-07-15 22:24:31 +02:00
Paul Fultz II 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
Paul Fultz II 42f075c3fa Skip literals for always true/false (#1304) 2018-07-12 23:06:47 +02:00
Sebastian 5cc8da2db4
cfg/runtests.sh: Check syntax of defines in configuration files. (#1303)
travis: Add xmlstarlet package used by cfg/runtests.sh
2018-07-12 08:40:26 +02:00
Daniel Marjamäki b398398dec Fixed #8360 (false positive "Ineffective call of function 'empty()'") 2018-07-10 22:58:02 +02:00
Daniel Marjamäki 7e2858f158 astyle formatting
[ci skip]
2018-07-10 22:56:18 +02:00
Daniel Marjamäki 03faa25d12 Conditions: Better handling of function calls 2018-07-08 15:58:04 +02:00
amai2012 c2f0828a61 #6645 false negative: condition is always false. Add a regression test 2018-07-03 08:25:37 +02:00
Daniel Marjamäki 24dd4c9c26 Restore code in checkVariableScope. Fixes false negative 2018-07-01 22:31:45 +02:00
Daniel Marjamäki 60ac463a79 CheckClass: Restore a few warnings about member initialization of classes 2018-06-29 22:54:12 +02:00
Alexander Mai 320a957bbc Extend TestSymbolDatabase::findFunction19 to outline different results depending whether char is signed or unsigned on compile time 2018-06-28 22:16:18 +02:00
Daniel Marjamäki 61c56eda44 Tweak the CheckClass::constructors() check 2018-06-27 14:02:57 +02:00
Daniel Marjamäki 10e693a8c3 Revert "SymbolDatabase: Improved lookup of function calls"
This reverts commit 3c87d60d5d.
2018-06-26 23:14:12 +02:00
Daniel Marjamäki 3c87d60d5d SymbolDatabase: Improved lookup of function calls 2018-06-26 22:12:12 +02:00
Daniel Marjamäki c583fb9186 Revert "SymbolDatabase: Improved lookup of function calls"
This reverts commit e4a70f87e6.
2018-06-26 13:05:33 +02:00
Daniel Marjamäki e4a70f87e6 SymbolDatabase: Improved lookup of function calls 2018-06-26 11:38:45 +02:00
Daniel Marjamäki 33493883b2 TestSymbolDatabase: Remove unused variable 2018-06-24 17:13:27 +02:00
Daniel Marjamäki ea6a9c965d TestSymbolDatabase: Code cleanup 2018-06-24 17:06:51 +02:00
Daniel Marjamäki cde63c7573 Use Variable::valueType instead of Variable::typeStartToken in auto variables 2018-06-24 08:25:19 +02:00
Daniel Marjamäki 655a8b21b6 Fix false positive 'passedByValue' when address of argument is used 2018-06-23 23:25:06 +02:00
Daniel Marjamäki 2a8296879c CheckOther: Use Variable::valueType() instead of Variable::typeStartToken 2018-06-23 16:42:36 +02:00
Daniel Marjamäki d0614b9b36 varScope: Fix false negatives for references 2018-06-22 22:51:03 +02:00
Daniel Marjamäki 10fc070f44 SymbolDatabase: Better handling of type aliases in ValueType 2018-06-20 14:49:55 +02:00
Daniel Marjamäki b4cb2505c3 SymbolDatabase: Add Variable::valueType(). First step to reuse ValueType handling in Variable 2018-06-20 10:00:15 +02:00