Commit Graph

8482 Commits

Author SHA1 Message Date
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