Commit Graph

8717 Commits

Author SHA1 Message Date
Paul Fultz II be6782d386 Fix FP 8891: Incorrect return scope when using uniform initialization
This fixes the FP in:

```cpp

std::string f(const std::string& data)
{
  if (data.empty())
    return {};

  data[0];
}
```
2018-12-14 18:31:10 +01:00
Daniel Marjamäki 9742c1e2ae make checkcfg: Try to fix inline suppressions 2018-12-14 13:51:03 +01:00
Daniel Marjamäki 8464085535 UnusedVariables: Fix FP for unknown variable 2018-12-13 21:37:21 +01:00
Daniel Marjamäki 092d434f91 UnusedVar: Fix FP for array arguments 2018-12-13 21:08:18 +01:00
Daniel Marjamäki 1f27cd56c0 FwdAnalysis; Code cleanup, isNullOperand 2018-12-13 21:01:33 +01:00
Daniel Marjamäki 0b4e08cac9 Use FwdAnalysis in UnusedVar. This is still work-in-progress. Merging to master branch so it can be tested. 2018-12-13 18:52:56 +01:00
IOBYTE 0f83aff3b8 Improve trailing return type support. (#1520)
* Improve trailing return type support.

* Partial fix for #8889 (varid on function when using trailing return type)

* Handle operators in templates.
2018-12-13 06:34:10 +01:00
Daniel Marjamäki e0b64ec7a9 Fixed #8884 (AST: handle xs... template argument) 2018-12-12 19:00:14 +01:00
amai2012 6924522475
Refactor methods for identification of numeric literals. (#1514) 2018-12-10 12:10:26 +01:00
Daniel Marjamäki a16f694254 Revert "Fix issue 8884: Regression: False positive: Variable 'f' is reassigned a value before the old one has been used (#1513)"
This reverts commit 6953dddfa6.
2018-12-08 08:25:20 +01:00
Paul Fultz II 6953dddfa6 Fix issue 8884: Regression: False positive: Variable 'f' is reassigned a value before the old one has been used (#1513) 2018-12-08 07:33:51 +01:00
amai2012 a68086c959
Implement hexadecimal float conversion in MathLib::toDoubleNumber ind… (#1506)
* Implement hexadecimal float conversion in MathLib::toDoubleNumber independent of C99/C++17
* Refactor MathLib::isFloatHex and cure some false results
2018-12-06 22:16:16 +01:00
IOBYTE a90c56ad76 Fixed #8880 (Regression: syntax error for valid C++ template code) (#1509) 2018-12-06 21:47:48 +01:00
Daniel Marjamäki 01d0199ecf Fix testrunner 2018-12-04 19:56:22 +01:00
Daniel Marjamäki bd0a935d8a Tokenizer: Improved handling of compiler extensions that use @ (see https://sourceforge.net/p/cppcheck/discussion/general/thread/8f618cb0a3) 2018-12-04 19:33:39 +01:00
Daniel Marjamäki 88c61e8d1e ValueFlow: Avoid FP when lambda is used 2018-12-04 18:54:26 +01:00
Daniel Marjamäki f5a94ed300 ValueFlow: Fix FP when lambda is called 2018-12-04 18:46:00 +01:00
Daniel Marjamäki 7c47283e6d Fix testrunner 2018-12-04 17:17:07 +01:00
Daniel Marjamäki 49413b7d4c Tokenizer: Add simplifyAt to handle some nonstandard code with @ 2018-12-04 16:52:41 +01:00
Igor 61878c5e11 Add null pointer check to fix SEGFAULT (#1499)
* Add null pointer check to fix segfault

* Add first test case to reproduce problem
2018-12-02 14:36:01 +01:00
Paul Fultz II 3e1b34dd8f Fix FPs and crashes with byDerefCopy (#1503)
* Fix FP when inserting a range into a container

* Formatting

* Fix crash
2018-12-02 14:31:31 +01:00
Daniel Marjamäki ba564076db Fixed #7907 (FN: redundant assignment inside switchcase, overwritten by assignment outside of switch) 2018-12-02 14:04:59 +01:00
Daniel Marjamäki 8087cfed5d Fixed #8627 (Tokenizer::setVarIdPass2: constructor parameter) 2018-12-02 09:28:05 +01:00
Daniel Marjamäki ccbaad32f9 Fix merge conflicts 2018-12-01 19:14:43 +01:00
Paul Fultz II b841b818d2 Fix 8872: Crash in LifetimeStore when there is no scope for variable
This fixes crash in:

```cpp
struct edit_line_paste_over {
    void operator()(agi::Context *c) override {
        paste_lines(c, true, [&](AssDialogue *new_line) -> AssDialogue * {
            AssDialogue *ret = paste_over(c->parent, pasteOverOptions, new_line, static_cast<AssDialogue*>(&*pos));
            return ret;
          });
    }
};
```
2018-12-01 19:11:26 +01:00
Paul Fultz II 67dd822910 Fix FP in lifetime anlaysis: Dont decay std array
This will fix FP with:

```cpp
std::array<char, 1> f() {
    std::array<char, 1> x;
    return x;
}
```
2018-12-01 19:09:19 +01:00
Paul Fultz II 229c45e7f8 Fix issue 8865: FP with dangling lifetime
This fixes:

```cpp
void f(uint32_t event, unsigned long op, const xen_ulong_t *args)
{
    struct __packed {
        uint32_t op;
        uint32_t args[6];
    } d;
    uint32_t *a = d.args;
}
```
2018-12-01 19:07:46 +01:00
Daniel Marjamäki 2c803a1ead Revert "#6514 Try to support hexadecimal floating numbers in MathLib::toDoubleNumber"
This reverts commit a73decf7e4.
2018-12-01 19:01:51 +01:00
Daniel Marjamäki 501f99ac5a Revert "astyle formatting"
This reverts commit 9289c9a283.
2018-12-01 19:01:40 +01:00
Daniel Marjamäki 96929c53c0 Fixed #8873 (Add syntaxError when there is no RHS for +-) 2018-12-01 17:29:41 +01:00
Daniel Marjamäki 9289c9a283 astyle formatting 2018-12-01 13:17:16 +01:00
Daniel Marjamäki f42648fe22 Fixed #8114 (false positive: Address of local auto-variable assigned to a function parameter.) 2018-12-01 10:11:02 +01:00
amai2012 a73decf7e4 #6514 Try to support hexadecimal floating numbers in MathLib::toDoubleNumber 2018-12-01 00:50:26 +01:00
Colomban Wendling cad4e4ab20 Fix handling of `sizeof &var` (#1498)
Fixes https://trac.cppcheck.net/ticket/8870
2018-11-30 13:53:58 +01:00
IOBYTE 3d024f3f6d template simplifier: fix function forward declaration bug for constructor with initializer list. (#1497) 2018-11-29 06:24:28 +01:00
Daniel Marjamäki dd94bfede9 CheckStl: Improving checking of container access out of bounds 2018-11-28 19:27:28 +01:00
Daniel Marjamäki 6493db6ca2 Try to clarify message for container access out of bounds a little more. 2018-11-28 13:58:01 +01:00
Daniel Marjamäki 0f2f807798 Improve the container out of bounds messages. They are still not perfect. 2018-11-28 07:03:56 +01:00
Daniel Marjamäki 13c6489571 Redundant variable assignment: Fix FN for struct members 2018-11-27 18:22:22 +01:00
Paul Fultz II 5a6f9ac82a Fix FP with strcmp and terminating conditions 2018-11-27 06:39:29 +01:00
IOBYTE f2660ed203 template simplifier: fix instantiated template names in forward declarations (#1495)
This now handles the revised example code in #8603.
2018-11-27 06:17:04 +01:00
Daniel Marjamäki 2887ee10c0 Fixed #8800 (Possible variable assignment ignored in boolean expression) 2018-11-26 14:00:03 +01:00
Daniel Marjamäki affd03f1d6 Minor tweak for redundantVariableAssignment 2018-11-26 11:16:50 +01:00
IOBYTE e20079a5d9 template simplifier: fix 3 function forward declaration bugs (#1493)
* fix support for multi token types
* fix support for const member functions
* fix duplicate template parameters sometimes being inserted
2018-11-26 06:23:12 +01:00
Daniel Marjamäki 86f9fb778b Fixed #8864 (compile commands: handle define with string value) 2018-11-25 15:09:23 +01:00
Daniel Marjamäki 0160f80ffe redundantVarAssignment: avoid FPs when loops are used 2018-11-25 10:32:30 +01:00
Daniel Marjamäki 22f736eae2 redundant variable assignments: avoid FPs for initializations 2018-11-25 08:49:09 +01:00
Daniel Marjamäki 2f66b31d43 redundantAssignmentInSwitch: fix false positive when there is goto 2018-11-24 21:39:01 +01:00
Daniel Marjamäki b7ca9bdc8d Travis: redundantCopy is not detected at the moment 2018-11-24 12:01:10 +01:00
Daniel Marjamäki ec89c7b1b8 Travis: redundantCopy is not detected at the moment 2018-11-24 11:27:27 +01:00
Paul Fultz II a3921ea861 Refactor valueFlowAfterCondition
So this unifies the `valueFlowAfterCondition` so it re-uses more code between checking for integers and container sizes. This should make valueFlowContainer more robust.

It also extends valueflow to support container comparisons such as `if (v.size() < 3)` or `if (v.size() > 3)` using the same mechanism that is used for integers.
2018-11-24 10:07:12 +01:00
Daniel Marjamäki 866688c70a Rewriting redundantAssignment checker 2018-11-24 10:03:54 +01:00
IOBYTE 358f0c473d Modify template simplifier to add forward declarations of some templa… (#1489)
* Modify template simplifier to add forward declarations of some template functions so symbol database can make sense of the expanded templates.

* Fix travis.
2018-11-23 11:36:09 +01:00
orbitcowboy ef05be2600 wxwidgets.cfg: Fixed FP due to overlaoded function wxSizer::Add(). 2018-11-23 09:49:08 +01:00
Daniel Marjamäki c181d28b1a astyle formatting
[ci skip]
2018-11-23 06:47:27 +01:00
orbitcowboy 428d0147bc wxwidgets.cfg: Added support for wxSizer::Add(). 2018-11-22 14:04:22 +01:00
orbitcowboy d6c85118a7 wxwidgets.cfg: Improved support for some wxStaticText member functions. 2018-11-22 13:47:17 +01:00
orbitcowboy 2b9bdc52d7 wxwidgets.cfg: Added support for wxWindow::Close() and derived classes. 2018-11-22 13:31:09 +01:00
Paul Fultz II f16d9d7d90 Issue 6175: Check lifetime of a variables stored in containers and member variables
Cppcheck will now warn for all cases here:

```cpp
#include <vector>
class CCluster {};
class MyClass
{ public:
    std::vector<CCluster*> m_cluster;
    void createCluster()
    {
        CCluster cl;
        CCluster* pcl=&cl;
        m_cluster.push_back(pcl);
    }
    void createCluster2()
    {
        CCluster cl;
        m_cluster.push_back(&cl);
    }
    CCluster* Cluster()
    {
        CCluster cl;
        CCluster* pcl=&cl;
        return pcl;
    }
    CCluster* Cluster2()
    {
        CCluster cl;
        return &cl;
    }
};

```
2018-11-21 08:43:57 +01:00
Daniel Marjamäki 081bd7660e Fix Travis 2018-11-21 08:39:21 +01:00
orbitcowboy b4aa04db41 std.cfg: Added returnValue calculation for isless(), islessgreater() etc. 2018-11-20 16:58:33 +01:00
orbitcowboy 58b3d75b62 std.cfg: Added invalidFunctionArg cfg for strchr(). 2018-11-20 08:32:54 +01:00
Daniel Marjamäki a8cbbe0e16 Fixed #8816 (FP shadowLocal - variable shadows a template function?) 2018-11-19 07:00:15 +01:00
Daniel Marjamäki 9ef3c79bc6 Fixed #8851 (Crash in valueFlowContainerForward (daca@home: pbbam)) 2018-11-18 20:18:55 +01:00
Paul Fultz II 7ef119cbfc Fix FPs in lifetime checker
This fixes several FPs in the lifetime checker. It also fixes issue [8846](https://trac.cppcheck.net/ticket/8846):

```cpp
int * f(int a[])
{
        return a;
}
```
2018-11-17 09:41:59 +01:00
Paul Fultz II d376e9f245 Track variable lifetime through function calls (#1481) 2018-11-16 06:12:28 +01:00
Carlo Marcelo Arenas Belon d880d64a9c test: avoid a mutable comparator for test (#1482) 2018-11-15 16:21:12 +01:00
Daniel Marjamäki 5d086d60ad Fixed #8844 (snd: Wrong varid and ast) 2018-11-14 21:05:09 +01:00
Daniel Marjamäki 69f2e0938a VarId: Improved varids for struct members (#8844) 2018-11-14 19:11:35 +01:00
Daniel Marjamäki 69f6100d83 Fixed #8339 (false positive: unread variable despite delete is used on it) 2018-11-14 17:04:21 +01:00
Paul Fultz II 54453c5802 Fix FP when copying pointer to string (#1479) 2018-11-14 06:59:25 +01:00
Paul Fultz II f0c86b9d14 Fix issue 8842: Crash in valueFlowTerminatingCondition on incomplete code (#1480) 2018-11-14 06:23:45 +01:00
Daniel Marjamäki e6a5e0f752 Warn when there is a unknown macro 2018-11-13 16:49:15 +01:00
Daniel Marjamäki 69e7392ce2 Fixed #8449 (False positive 'constStatement' when initializing std::unordered_map) 2018-11-12 18:10:34 +01:00
Daniel Marjamäki 3d629944da Fixed #8100 (False positive when method/function defines lambda with pointer return value) 2018-11-12 11:28:38 +01:00
Paul Fultz II 0e11bb07c8 Extend lifetime analysis to pointer usage (#1477)
* Use lifetime analysis for pointers as well

* Fix issue 1143: Pointer to local array

* Update message when using pointers

* Avoid infinite loop in tracing lifetimes
2018-11-12 10:08:17 +01:00
Daniel Marjamäki 58882b1f14 Fixed #8261 (False positive "Statements following return, break, continue, goto or throw will never be executed.") 2018-11-12 06:31:17 +01:00
Paul Fultz II 68d6b96878 Diagnose invalid lifetimes (#1475)
* Add check for invalid lifetimes

* Fix FP with member variables

* Dont forward lifetime values in subfunction

* Update message to use out of scope
2018-11-11 16:43:54 +01:00
Daniel Marjamäki 3f55707b30 Fixed #8064 (Taking the address of a moved variable is not accessing it) 2018-11-11 12:47:27 +01:00
Paul Fultz II e46691597e Fix issue 8841: FP knownConditionTrueFalse - Dont treat unknown function as noreturn (#1474)
* Fix issue 8841: Dont treat unknown function as noreturn

* Add a parameter to set default value when the function is unknown
2018-11-11 08:04:01 +01:00
Daniel Marjamäki ee2dfb6604 Fixed #8058 (False positive returnAddressOfAutoVariable within lambda) 2018-11-11 07:52:38 +01:00
Daniel Marjamäki 93cde415a7 Fixed #7988 (variable in condition gets wrong varid) 2018-11-11 07:50:25 +01:00
Daniel Marjamäki 148f257c6b Fixed #8838 (False positive on overridden virtual function that is marked both const and final) 2018-11-10 21:57:50 +01:00
Daniel Marjamäki 8327aab127 Fixed #8628 (Wrong AST in case) 2018-11-10 21:32:06 +01:00
Daniel Marjamäki d5a478d5c5 astyle formatting
[ci skip]
2018-11-10 21:30:01 +01:00
Daniel Marjamäki 4cef2e94e7 Fixed #8368 (FP redundantAssignment - assignment has unknown side-effects) 2018-11-10 18:42:13 +01:00
IOBYTE 69e6e11844 Fix a template simplifier namespace bug in #7145 (#1473)
* Fix a template simplifier namespace bug in #7145

* Refactor template simplifier to only call getTemplateDeclarations once per loop.
2018-11-10 16:41:14 +01:00
Paul Fultz II 1ffcc6b730 Add initial lifetime checker (#1448)
* Inital valueflow lifetime checker

* Forward values

* Add initial tests

* Fix deplicate messages

* Fix traversing nested lambdas

* Turn test case into a todo

* Skip if returning a container

* Fix FP when using references

* Add missing header

* Fix FP from broken scopes

* Fix FP with static variable

* Add test for more FPs

* Parse lambda functions

* Check for capture by value

* Add tests for using a container and lambda together

* Fix cppcheck errors

* Add test for nextAfterAstRightmostLeaf

* Add valueflow tests

* Update error message

* Check for correct lambda token

* Improve error path reporting

* Fix hang when parsing arrays that look almlost like lambdas
2018-11-10 16:40:40 +01:00
IOBYTE e302e6e7a1 Fix symbol database argsMatch to skip all redundant type information (class, struct, union, enum) (#1472) 2018-11-09 15:54:17 +01:00
IOBYTE 67fe99fcd9 Fix symbol database argsMatch function and its usage so qualified types are handled properly. (#1470)
* Fix symbol database argsMatch function and its usage so qualified types are handled properly.

* Remove assert.
2018-11-09 06:11:48 +01:00
Paul Fultz II 36e663e250 Fix issue 8839: FP knownConditionTrueFalse - condition inside a while-clause (#1469) 2018-11-09 06:09:51 +01:00
IOBYTE 17a8a4898d Fix another template simplifier namespace bug. (#1467)
* Fix another template simplifier namespace bug.

* Add missing forward declarations caused by token bug.
2018-11-07 21:25:42 +01:00
Paul Fultz II 7373be2bfa Add a pass in valueflow for terminating conditions (#1323)
* Add valueflow for terminating conditions

* Add valueflow test

* Dont check for same expressions for now to avoid double diagnostics

* Check nesting

* Add more tests

* Ensure conditions happen in order

* Check for null

* Add error path

* Support same expression check as well

* Use early continue

* Skip checking the same token

* Avoid double condtion diagnosis

* Fix FP when in switch statements

* Fix FP when time function

* Skip conditional escapes

* Use simpleMatch

* Fix naming

* Fix typo
2018-11-07 06:49:07 +01:00
IOBYTE c966f31183 Fixed #8835 (friend class and non-empty constructor: Uninitialized members not reported) (#1466) 2018-11-06 06:44:08 +01:00
Daniel Marjamäki 00340efc57 ValueFlow: Refactoring valueFlowCallFunction 2018-11-06 06:38:26 +01:00
IOBYTE 9b67e680ae Fix template simplifier namespace support. (#1464) 2018-11-05 19:55:21 +01:00
Paul Fultz II d62ed420d8 Add a check target to cmake (#1465) 2018-11-05 18:13:04 +01:00
Daniel Marjamäki ca19894a04 ValueFlow: In evaluate handle correlated values 2018-11-05 18:07:35 +01:00
IOBYTE 2275f05f65 Fixed #8833 (false negative: No 'return' statement in non-void function causes undefined behavior.) (#1463) 2018-11-05 06:55:30 +01:00
Daniel Marjamäki 8a54420274 ValueFlow: Try to handle multiple argument values in <returnValue> evaluation 2018-11-04 20:52:12 +01:00
orbitcowboy 1d5e797e6d testother: Fixed typos in tests. Replaced 'voif' with 'void'. 2018-11-04 14:46:22 +01:00
Daniel Marjamäki 6878de2c5e ValueFlow: getExpressionRange, valueFlowRightShift 2018-11-03 23:25:46 +01:00
Daniel Marjamäki f8b0584f6a replace 'constexpr' with 'const' 2018-11-03 19:22:51 +01:00
Daniel Marjamäki 66ca03fa0c Fixed #8826 (false negative: Invalid memory address freed) 2018-11-03 18:55:20 +01:00
Daniel Marjamäki ef35b86b4a Multipass Valueflow 2018-11-03 15:53:24 +01:00
Daniel Marjamäki 6138294e3d Fixed #8818 (AST broken: restrict) 2018-11-03 11:05:38 +01:00
Daniel Marjamäki 9741239b2f Fixed #8824 (False positive: uninitialized variable (regression)) 2018-11-03 10:31:55 +01:00
Daniel Marjamäki a4afcb5995 Revert "Fixed #8818 (AST broken: restrict)"
This reverts commit e7d61f399a.
2018-11-02 21:07:37 +01:00
Daniel Marjamäki 0cc4555337 Revert "Tokenizer: Do not remove 'constexpr'"
This reverts commit 2f400b40ba.
2018-11-02 21:07:24 +01:00
Daniel Marjamäki 2f400b40ba Tokenizer: Do not remove 'constexpr' 2018-11-02 20:32:12 +01:00
Daniel Marjamäki e7d61f399a Fixed #8818 (AST broken: restrict) 2018-11-02 20:28:49 +01:00
Daniel Marjamäki 5de683ec49 Container size: Fix false positive 2018-11-02 20:10:40 +01:00
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