Commit Graph

869 Commits

Author SHA1 Message Date
Rikard Falkeborn 839fcddd8a Fix #6115 (Add support to realloc to cfg files) (#1953)
* Allow to configure realloc like functions

* memleakonrealloc: Bring back tests.

The old memleak checker was removed, and the tests for it was removed in
commit 9765a2dfab. This also removed the
tests for memleakOnRealloc. Bring back those tests, somewhat modified
since the checker no longer checks for memory leaks.

* Add realloc to mem leak check

* Add tests of realloc buffer size

* Configure realloc functions

* Add test of freopen

* Allow to configure which element is realloc argument

* Fix wrong close in test

cppcheck now warns for this

* Update manual

* Update docs

* Rename alloc/dalloc/realloc functions

Naming the member function realloc caused problems on appveyor. Rename
the alloc and dealloc functions as well for consistency.

* Change comparisson order

* Remove variable and use function call directly

* Create temporary variable to simplify

* Throw mismatchError on mismatching allocation/reallocation

* Refactor to separate function

* Fix potential nullptr dereference

As pointed out by cppcheck.
2019-07-05 12:44:52 +02:00
shaneasd 7e54f989f9 Update symbol database such that the override keyword implies that the function is also virtual (#1907)
* Update symbol database such that the override keyword implies that the function is also virtual

* Add test case for implicit override

* change isVirtual to hasVirtualSpecifier

* fix method documentation for getVirtualFunctionCalls and getFirstVirtualFunctionCallStack

* Fix isImplicitlyVirtual to consider the override keyword and document logic

* Fix getFirstVirtualFunctionCallStack and getVirtualFunctionCalls to use isImplicitlyVirtual instead of isVirtual so new test case passes
2019-07-04 12:32:32 +02:00
Scott Furry a195477470 Correct Zero/Null as pointer constant (#1938)
Building with enhanced clang warnings indicated a large number of
instances with the warning:

`warning: zero as null pointer constant`

Recommended practice in C++11 is to use `nullptr` as value for
a NULL or empty pointer value. All instances where this warning
was encountered were corrected in this commit.

Where warning was encountered in dependency code (i.e. external library)
no chnages were made. Patching will be offered upstream.
2019-06-30 21:39:22 +02:00
Daniel Marjamäki 56df6169fb Fixed #8356 (ValueFlow: variable is not changed in for loop) 2019-06-30 17:50:35 +02:00
Rikard Falkeborn d1d622b74c Valueflow: support global static const variables (#1861) 2019-06-29 14:33:55 +02:00
Paul Fultz II 66e0f06494 Fixx issue 9163: FP returnDanglingLifetime - returning std::string::find (#1912)
* Fixx issue 9163: FP returnDanglingLifetime - returning std::string::find

* Use simpleMatch
2019-06-24 18:52:17 +02:00
Rikard Falkeborn d909ac8565 Bugfix buffer size for strdup like functions (#1893)
strdup() allocates the string length plus one for a terminating null
character. Add one to compensate for this.

Fixes false positive buffer out of bounds on code like this:

	void f() {
		const char *a = "abcd";
		char * b = strdup(a);
		printf("%c", b[4]); // prints the terminating null character
		free(b);
	}

Also, add a testcase for valueFlowDynamicBufferSize() and add tests for
strdup(), malloc() and calloc().
2019-06-16 16:02:27 +02:00
Ken-Patrick 66ebc187f6 Cleanup some const_cast of Token* (#1886)
* Add non const version of some methods of Token

The aim is to reduce the (ab)use of const_cast.

* Cleanup some more const_cast in valueflow

* Remove useless const_cast

* Remove some const_cast from templatesimplifier

* Remove some const_cast from valueflow
2019-06-16 10:09:38 +02:00
Paul Fultz II 6ae7be0f53 Fix FP with lifetime containers (#1865) 2019-06-02 10:14:48 +02:00
Paul Fultz II f75c15af56 Fix issue 6821: New check: access heap/stack data using address of variable
This fixes errors with:

```cpp
int f() {
    int i;
    return (&i)[1];
}
```

It uses the lifetime analysis to detect the issues.
2019-05-31 12:24:31 +02:00
Paul Fultz II 108cdaa485 Fix FP with unreadVariable (#1859) 2019-05-31 08:06:36 +02:00
orbitcowboy 55df395a4e Running astyle [ci skip] 2019-05-30 14:41:14 +02:00
Ken-Patrick 3cdc236e10 Fix false positive with several ! (not) operators (#1856)
With the following code
  int f(int x, int y) {
      if (!!(x != 0)) {
        return y/x;
  }

cppcheck would wrongly warn that there might be a division by zero in
"return y/x;".
2019-05-29 09:45:15 +02:00
Carlo Marcelo Arenas Belón bf5c71bdca sync (#1835)
* build: remove -Wabi and add -Wundef

gcc >= 8 throws a warning about -Wabi (without a specific ABI version)
being ignored, while -Wundef seems more useful (as shown by the change
in config.h, which was probably an unfortunate typo)

travis.yaml should probably be updated soon, but was left out from this
change as the current images don't yet need it

* lib: unused function in valueflow

refactored out since 8c03be3212

lib/valueflow.cpp:3124:21: warning: unused function 'endTemplateArgument' [-Wunused-function]

* readme: include picojson

* make: also clean exe
2019-05-17 09:31:41 +02:00
Paul Fultz II 4e94c64da8 Fix issue 9099 and 9102: Incorrect valueflow for global variables (#1832) 2019-05-14 08:58:27 +02:00
Paul Fultz II 8c03be3212 Fix issue 9077: False positive: Returning pointer to local variable (#1821)
* Avoid implicit conversion for lifetimes

* Fix issue 9077

* Add more tests

* Rename function

* Fix implicit conversion with containers

* Format

* Fix crash
2019-05-05 11:40:59 +02:00
Paul Fultz II a688df0ea1 Fix issue 9120: crash in valueflow (#1822) 2019-05-05 09:51:36 +02:00
Daniel Marjamäki 0b3342abe5 Fix Cppcheck warning 2019-05-04 20:41:43 +02:00
Paul Fultz II 091f4bcf8d Add check for unnecessary search before insertion
This will warn for cases where searching in an associative container happens before insertion, like this:

```cpp
void f1(std::set<unsigned>& s, unsigned x) {
    if (s.find(x) == s.end()) {
        s.insert(x);
    }
}

void f2(std::map<unsigned, unsigned>& m, unsigned x) {
    if (m.find(x) == m.end()) {
        m.emplace(x, 1);
    } else {
        m[x] = 1;
    }
}
```

In the case of the map it could be written as `m[x] = 1` as it will create the key if it doesnt exist, so the extra search is not necessary.

I have this marked as `performance` as it is mostly concerning performance, but there could be a copy-paste error possibly, although I dont think thats common.
2019-05-02 11:04:23 +02:00
Daniel Marjamäki 6c3c090403 Fixed #6317 (wrong simplification: int i = 1.5; return i; get simplified to: return 1.5;) 2019-05-01 17:05:16 +02:00
Rikard Falkeborn 1cc5f3abe7 Set wchar_t type (#1807)
This is necessary for valueflow to know the size, for example when
calculating sizeof(wchar_t).
2019-05-01 16:34:28 +02:00
Paul Fultz II 71bd7f68d4 Fix bug in lifetime constructors (#1816) 2019-05-01 07:52:52 +02:00
Daniel Marjamäki 66064fb2bb Disable valueFlowGlobalConstVar until #9099 is fixed 2019-04-30 20:51:59 +02:00
Daniel Marjamäki b1ca7c9a66 astyle formatting
[ci skip]
2019-04-26 11:30:35 +02:00
Paul Fultz II 39f4374446 Improve diagnostics with null smart pointers (#1805)
* Warn when dereferencing null smart pointers

* Improve tracking of smart pointer values

* Use library isSmartPointer
2019-04-26 11:30:09 +02:00
Gary Leutheuser bca2dfb3f4 Implement #7597 - valueflow: global constant (#1802)
* Implement const global value flow

* Tabs to spaces
2019-04-21 06:54:32 +02:00
Rikard Falkeborn d23e987941 Fix CheckInternal warnings (#1790) 2019-04-06 06:55:46 +02:00
Daniel Marjamäki 55433fce40 Library: added bufferSize parameters 2019-03-20 19:26:57 +01:00
Daniel Marjamäki 14528bcf25 Library: allowed values for the buffer-size attribute: malloc/calloc/strdup 2019-03-20 06:46:55 +01:00
Paul Fultz II 774464eabb Fix issue 8996: False positive duplicateCondition
This fixes issue 8996 by improving the alias checking by using lifetime analysis. It also extends the lifetime checker to handle constructors and initializer lists for containers and arrays.
2019-03-19 06:25:10 +01:00
Daniel Marjamäki 3c85d8a8ac ValueFlow: Better info for buffer size values 2019-03-17 19:02:36 +01:00
Daniel Marjamäki 92f4113b59 Array index: Checking array index out of bounds for dynamic buffers 2019-03-17 13:09:15 +01:00
Daniel Marjamäki b984897526 ValueFlow: Fix sizeof for array of library type 2019-03-13 18:31:41 +01:00
Daniel Marjamäki 11e32ff445 ValueFlow: Handle compound assignments in execute() 2019-03-12 18:53:58 +01:00
Daniel Marjamäki 7b17b33a49 ValueFlow: fix handling of sizeof(*p) 2019-03-11 20:32:24 +01:00
Daniel Marjamäki 5563fef7bb Fixed #9008 (new crash in clang test suite) 2019-02-28 20:34:07 +01:00
Daniel Marjamäki 857681a049 Make quick fix for uninitialized variable false positive. Will look more at this soon. 2019-02-28 09:52:52 +01:00
rikardfalkeborn c9efc26578 valueflow: Mark getLifetimeToken() static (#1703)
Fixes a compiler warning about missing declaration.
2019-02-26 23:35:11 +01:00
Paul Fultz II fd3c1fd040 Fix issue 1777: Undefined Behavior: Comparing pointers to different objects
This uses the lifetime analysis to check when comparing pointer that point to different objects:

```cpp
int main(void)
{
    int foo[10];
    int bar[10];
    int diff;

    if(foo > bar)   // Undefined Behavior
    {
       diff = 1;
    }

    return 0;
}
```
2019-02-23 08:32:08 +01:00
Paul Fultz II 507c7a4388 Improvement to lifetime tracking of addressof and derefencing
This will now warn for cases like this:

```cpp
auto& f() {
    std::vector<int> x;
    return x[0];
}
```

It also improves the handling of address of operator, so it can now warn across some function calls, like this:

```cpp
int& f(int& a) {
    return a;
}
int* hello() {
    int x = 0;
    return &f(x);
}
```
2019-02-22 06:38:56 +01:00
Paul Fultz II 715714f4de Forward lifetimes in "for" loops (#1682)
* Forward lifetimes in for loops

* Format
2019-02-22 06:37:02 +01:00
Daniel Marjamäki 9337af8965 astyle formatting 2019-02-09 08:48:10 +01:00
Paul Fultz II 797eccc203 Fix possible out of bounds access on arguments (#1652)
* Fix possible outbounds access on arguments

* Log a warning when the arguments mismatch

* Format
2019-02-09 08:47:36 +01:00
Daniel Marjamäki bd7790fd8c Update copyright year 2019-02-09 07:24:06 +01:00
Paul Fultz II c176775afb Avoid infinite recursion in getLifetimeVariable (#1634)
* Fix direct recursion

* Limit depth of getLifetimeVariable
2019-01-31 10:34:41 +01:00
Paul Fultz II 165a22ed0f Lifetime: Support analysis with functions that do not return a reference (#1632)
* Initial support for function return

* Add test case

* Add support for reference parameters

* Format
2019-01-29 09:47:52 +01:00
Paul Fultz II d6aaf401df Lifetime: Follow functions that return references
This will now warn for cases like this:

```cpp
int& f(int& a) {
    return a;
}
int& hello() {
    int x = 0;
    return f(x);
}
```
2019-01-26 11:03:57 +01:00
Paul Fultz II 3975913637 Extend lifetime checking for references
This will use the lifetime checker for dangling references. It will find these cases for indirectly assigned reference:

```cpp
int &foo()
{
    int s = 0;
    int& x = s;
    return x;
}
```

This will also fix issue 510 as well:

```cpp
int &f( int k )
{
    static int &r = k;
    return r;
}
```
2019-01-23 07:29:16 +01:00
Paul Fultz II 4b37f276c2 ValueFlow: Set arrays to true when converting to a boolean
This sets it by checking the parent. It doesn't handle function parameters yet.
2019-01-21 20:05:35 +01:00
Paul Fultz II 5fa956a597 Fix issue 8932: False positive knownConditionTrueFalse - valueflow ignores operator < (#1584) 2019-01-11 08:39:23 +01:00
practicalswift 0a1b3a9d6f Fix typos (#1568) 2019-01-06 17:15:57 +01:00
Daniel Marjamäki 5636497c0b Fixed #8863 (false positive: (warning) Accessing an item in container 's'. Either the condition 's.empty()' is redundant or 's' can be empty.) 2019-01-06 12:21:55 +01:00
Paul Fultz II bba6dfb8b2 Fix issue 4744: ValueFlow: known integer result
This fixes valueflow to have a value for `||` operator here:

```cpp
bool f()
{
	bool a = (4 == 3); // <-- 0
	bool b = (3 == 3); // <-- 1
	return a || b; // <-- 1
}
```
2019-01-03 07:05:31 +01:00
Daniel Marjamäki 2b63997c2c Fixed #8928 (false positive: (style) Variable 'x' is assigned a value that is never used.) 2019-01-02 20:23:02 +01:00
Daniel Marjamäki 39ceb53578 Comment out code in valueFlowArray. There was too many false positives. 2019-01-02 19:57:11 +01:00
Daniel Marjamäki 39a96a5a16 ValueFlow: Temporarily comment out valueFlowTerminatingCondition 2019-01-02 19:42:08 +01:00
Daniel Marjamäki 115be7dfc8 ValueFlow: better FwdAnalysis for complex expressions 2019-01-01 18:23:47 +01:00
Daniel Marjamäki be7afac875 ValueFlow: remove handling of == for complex expressions it did not work properly 2019-01-01 17:23:46 +01:00
Daniel Marjamäki 20436ea986 Fix compiler warning 2019-01-01 17:04:47 +01:00
rikardfalkeborn 13ffefc8b8 Valueflow: Fix right shift with more than 31 bits (#1553)
When comparing if the shift is large enough to make the result zero, use
an unsigned long long to make sure the result fits. Also, a check that
avoids setting the value if the shift is equal to or larger than the
number of bits in the operand (this is undefined behaviour). Finally,
add a check to make sure the calculated value is not too large to store.

Add test cases to cover this.

This was detected by an MSVC warning.

valueflow.cpp(1350): warning C4334: '<<' : result of 32-bit shift implicitly
                     converted to 64 bits (was 64-bit shift intended?)
2019-01-01 14:15:50 +01:00
Daniel Marjamäki ed514644b8 Renamed FwdAnalysisAllPaths to FwdAnalysis 2018-12-31 18:00:47 +01:00
Daniel Marjamäki 4918a18bfb ValueFlow: Value of expression after condition 2018-12-31 17:37:38 +01:00
Daniel Marjamäki 141ce7cd63 ValueFlow: Use FwdAnalysisAllPaths in ValueFlow to track complex expressions 2018-12-31 17:05:46 +01:00
Carlo Marcelo Arenas Belón 5ae6861a0f clang warnings (#1547)
* valueflow: remove unused variable known

since e4677ae640 will trigger :

lib/valueflow.cpp:506:20: warning: unused variable 'known' [-Wunused-variable]
        const bool known = (parent->astOperand1()->hasKnownValue() ||

* templatesimplifier: cleanup

since 48c960f56c showing:

lib/templatesimplifier.h:279:16: warning: private field 'mTokenizer' is not used
      [-Wunused-private-field]
    Tokenizer *mTokenizer;
2018-12-30 11:32:48 +01:00
Paul Fultz II e4677ae640 Fix issue 8910: Regression: ValueFlow: wrong conditional tokvalue
This fixes issue in:

```cpp
void f()
{
    char stack[512];
    RGNDATA *data;

    if (data_size > sizeof (stack))
        data = malloc (data_size);
    else
        data = (RGNDATA *)stack;

    if ((char *)data != stack)
            free (data); // <- data is not stack
}
```

It seems the `ProgramMemory` can't handle two known values(such as int and tok) together. So instead `ValueFlowAfterAssign` runs `ValueFlowForward` with tok values and then runs it with the other values.
2018-12-29 09:31:21 +01:00
rikardfalkeborn 036fcf7827 Fix warnings (#1541)
* Fix reorder warning

* Fix override warnings

Clang warns about missing overrides.

* Remove unused function

* Add missing argument to function calls
2018-12-28 12:59:05 +01:00
Daniel Marjamäki a40fe3c67f Fixed #7872 (ValueFlow: static_cast) 2018-12-27 21:33:01 +01:00
Daniel Marjamäki bc34f0239d Disable the subfunction value flow analysis. It does not work well and needs to be rewritten. There are false positives. 2018-12-18 14:36:49 +01:00
Paul Fultz II 34330b51d1 Fix issue 8905: Condition 'a==0' is always false
This fixes the FP in:

```cpp
void f(const int a[]){ if (a == 0){} }
```
2018-12-18 08:16:43 +01:00
Paul Fultz II 025881cf35 Fix issue 8829: Condition '...' is always true (int buf[42]; if(buf != NULL){})
This makes arrays non-null in valueflow, so it can catch comparisons against null that is always true:

```cpp
void f(void) {
   int buf[42];
   if( buf != 0) {;} // << always true
}
```
2018-12-17 06:07:34 +01:00
Paul Fultz II 3262a3bebe Add isSameExpression to valueflow analysis
Check for same expressions in valueflow analysis.
2018-12-16 07:35:27 +01:00
Paul Fultz II 45dcfad9f9 Fix issue 8899: False positive returnDanglingLifetime when returning by value
This fixes the FP from:

```cpp
#include <string>

class MyString
{
        public:
        MyString(char* source)
        {
                length = strlen( source );
                buffer = new char[length+1];
                if( buffer )
                {
                        strcpy( buffer, source );
                }
        }

        char* buffer;
        int length;
};

MyString Foo()
{
        char arr[20];
        sprintf(arr, "hello world");

        return arr;
}

void main()
{
        MyString str = Foo();

        printf(str.buffer);
}
```
2018-12-15 17:58:45 +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
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
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
Daniel Marjamäki 0ad757fc78 valueFlowLifetime: Try to cleanup the loop a little. No functional change is intended. 2018-11-27 06:43:59 +01:00
Paul Fultz II 5a6f9ac82a Fix FP with strcmp and terminating conditions 2018-11-27 06:39:29 +01:00
Daniel Marjamäki 2887ee10c0 Fixed #8800 (Possible variable assignment ignored in boolean expression) 2018-11-26 14:00:03 +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 52f9650533 Refactoring: Use visitAstNodes 2018-11-23 19:16:19 +01:00
Daniel Marjamäki 745b58de26 Refactoring: Use visitAstNodes 2018-11-23 17:18:07 +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 9d8e5e36eb Added a few TODO comments 2018-11-20 22:57:01 +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
Daniel Marjamäki 39c04b650d astyle formatting
[ci skip]
2018-11-14 19:10:52 +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 f096d7f474 astyle formatting
[ci skip]
2018-11-12 10:08:57 +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 717a2d370c astyle formatting
[ci skip]
2018-11-12 06:32:02 +01:00
Paul Fultz II 5bda102897 Fix warnings (#1476) 2018-11-12 06:08:57 +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 bdd4623124 valueFlowLibraryFunction: fix crash found with daca@home 2018-11-11 16:41:01 +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 d5a478d5c5 astyle formatting
[ci skip]
2018-11-10 21:30:01 +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
Paul Fultz II 36e663e250 Fix issue 8839: FP knownConditionTrueFalse - condition inside a while-clause (#1469) 2018-11-09 06:09:51 +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
Daniel Marjamäki 35d18be311 ValueFlow: Refactoring, removed redundant assignment 2018-11-06 07:02:20 +01:00
Daniel Marjamäki 00340efc57 ValueFlow: Refactoring valueFlowCallFunction 2018-11-06 06:38:26 +01:00
Daniel Marjamäki ca19894a04 ValueFlow: In evaluate handle correlated values 2018-11-05 18:07:35 +01:00
Daniel Marjamäki da44ce0b5d ValueFlow: evaluate strlen and char literals better 2018-11-05 16:52:12 +01:00
Daniel Marjamäki 977fdd88a9 ValueFlow: Fix a few issues in 'evaluate' 2018-11-05 06:53:48 +01:00
Daniel Marjamäki 8a54420274 ValueFlow: Try to handle multiple argument values in <returnValue> evaluation 2018-11-04 20:52:12 +01:00
Daniel Marjamäki dd9a1e890b valueFlowRightShift: Do not perform analysis when rhs is negative 2018-11-04 17:13:23 +01:00
Daniel Marjamäki 6878de2c5e ValueFlow: getExpressionRange, valueFlowRightShift 2018-11-03 23:25:46 +01:00
Daniel Marjamäki ef35b86b4a Multipass Valueflow 2018-11-03 15:53:24 +01:00
Daniel Marjamäki 614a252704 Fix Match warning 2018-11-02 20:14:34 +01:00
Daniel Marjamäki 5de683ec49 Container size: Fix false positive 2018-11-02 20:10:40 +01:00
Daniel Marjamäki 16cc20a232 ValueFlow: Better handling of container size values 2018-11-02 18:28:32 +01:00
Daniel Marjamäki c03d32b429 ValueFlow: Improve containerSize handling of string like classes 2018-10-28 19:14:00 +01:00
Daniel Marjamäki 06ede9c239 ValueFlow: handle x+=y for containers 2018-10-27 18:38:04 +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 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
orbitcowboy d08b39c915
Improved const correctness of local variables. There are no functional changes intended. (#1392) 2018-09-23 20:24:51 +02:00
Daniel Marjamäki d7de46f50e ValueFlow: Fix false positive for container size 2018-09-08 10:43:08 +02:00
Daniel Marjamäki c6d43506b6 ValueFlow: Fix FP in switch 2018-09-04 20:28:48 +02:00
Daniel Marjamäki cc402869a6 Fixed #8689 (False positive: containerOutOfBounds after function call) 2018-09-02 14:08:34 +02:00
Daniel Marjamäki 6223204a06 Fixed #8708 (FP: Accessing an item in container that is empty) 2018-08-27 13:49:47 +02:00
Daniel Marjamäki 2f834c3c3b Fixed #8688 (False positive: containerOutOfBounds) 2018-08-13 21:27:29 +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 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 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 3805af18a2 valueFlowContainerSize: Fix crash when container pointer is null 2018-08-10 12:53:16 +02:00
Daniel Marjamäki f37434cd1d valueFlowContainerReverse: Fix FPs when there is assignment 2018-08-10 12:26:53 +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 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
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
Daniel Marjamäki 991300ac54 Clarify code with Token::isUnaryOp() 2018-07-14 22:36:08 +02:00
Daniel Marjamäki 1e824330c0 Refactoring: Use range for loops 2018-07-14 22:26:22 +02:00
Daniel Marjamäki 0f3cc56c59 Refactoring: Use range for loops 2018-07-14 13:19:41 +02:00
Daniel Marjamäki d603a811bb Clarify code with Token::hasKnownValue() 2018-07-14 13:09:53 +02:00
orbitcowboy de66eedd54 Improved const correctness of local variables. 2018-05-29 17:33:43 +02:00
Daniel Marjamäki 8e8919e906 Fix comment 2018-05-07 22:06:23 +02:00
Daniel Marjamäki 8c2a5c9813 astyle formatting
[ci skip]
2018-05-06 09:50:53 +02:00
Paul Fultz II 0561877182 Fix false positive with negative array index in issue 8536 (#1202)
* Fix FP with negative array index in valueflow

* Remove values when valueflow fails

* Add valueflow test
2018-05-06 08:35:29 +02:00
Daniel Marjamäki 858e055c0e ValueFlow: Wrote a few basic comments 2018-05-05 23:03:04 +02:00
Daniel Marjamäki f336c2efe7 Refactoring; Renamed Scope::classStart and Scope::classEnd 2018-04-27 22:36:30 +02:00
Daniel Marjamäki dbcdb19b73 Refactoring; Use range for 2018-04-24 18:02:36 +02:00
Daniel Marjamäki 7ee636b934 Refactoring: Reuse isLikelyStreamRead in isVariableChanged 2018-04-18 17:46:10 +02:00
Daniel Marjamäki 7825eb8670 Refactoring; reuse isLikelyStreamRead 2018-04-17 19:51:27 +02:00
Daniel Marjamäki c84628c28a Fixed #8494 (False positive: serialization class overloads operator) 2018-04-17 14:23:04 +02:00
PKEuS d2146844dd Refactorizations:
- Replace several push_back-calls by emplace_back
- Replace some x = x.substr(0, y) calls by x.erase(y)
2018-04-11 09:44:35 +02:00
Daniel Marjamäki c5923fbdd3 astyle formatting 2018-04-09 22:21:17 +02:00
Paul Fultz II d8b3fa5c70 Fix #8482: Regression with valueflow (#1159)
* Fix regression with valueflow

* Simplify test case
2018-04-09 16:13:17 +02:00
PKEuS b15cc3f236 Refactorization: Replace several push_back-sequences by initializer lists 2018-04-09 09:54:39 +02:00
Daniel Marjamäki ee5c60e8f6 Refactoring, use early continue 2018-04-08 09:30:13 +02:00
Daniel Marjamäki 795b9f5e0f astyle formatting 2018-04-08 09:25:59 +02:00
Paul Fultz II aed84abfd5 Extend valueflow comparison ops (#1153)
* Handle else clause when doing a compare

* Break early

* Fix bug in checking no return else

* Escape quotes

* Add equal sign

* Simplify the logic
2018-04-08 09:24:01 +02:00
Matthias Krüger 5a104cab6e remove weird "#line 2" from valueflow.cpp 2018-04-06 23:26:08 +02:00
Daniel Marjamäki 3ad6c7ebce Refactoring, use early continue 2018-04-05 08:21:43 +02:00
Paul Fultz II b871c85b67 Improve valeflow analysis with comparison operators (#1131)
* Improve valeflow analysis with comparison operators

* Use simple match

* Dont add 0 on comparisons

* Check reverse comparisons

* Use nullptr

* Remove duplicate code tests
2018-04-05 06:51:31 +02:00
jrp2014 b6504c70ca Improve constness 2018-04-04 21:51:31 +02:00
IOBYTE 5bc039b7da Fix #6367 and #8439 (improve sizeof value flow support) (#1132) 2018-03-23 08:28:12 +01:00
Daniel Marjamäki 7699f6432b Fixed #8288 (valueFlowGlobalVar: compound assignments) 2018-03-18 19:53:33 +01:00
Daniel Marjamäki ec6133aea2 Fixed #8182 (False positive uninitvar - variable initialized in function in ternary expression) 2018-03-16 19:13:48 +01:00
Daniel Marjamäki 1628405869 Fix internal warning 2018-02-24 22:35:37 +01:00
Daniel Marjamäki 7701e4594a ValueFlowBeforeCondition: Fix wrong value in do-while condition when there is a break in the loop body 2018-02-24 22:07:34 +01:00
Daniel Marjamäki 69b50b274c Try to make Travis happy 2018-02-11 22:54:14 +01:00
Daniel Marjamäki e62b9bdc77 Fixed #8348 (ValueFlow: wrong Uninit value with abort() in else-branch) 2018-02-11 22:14:44 +01:00
Matthias Krüger f009cfc845 fix some typos found by codespell. 2018-02-04 20:53:43 +01:00
Daniel Marjamäki c4caee6b18 Updated copyright year 2018-01-14 15:37:52 +01:00
Daniel Marjamäki 6fd157e93b ValueFlow: Template arguments have 'possible' values 2018-01-11 14:22:27 +01:00
PKEuS c8010fdf42 Fixed crash on garbage code (#8307) 2018-01-07 13:11:56 +01:00
Daniel Marjamäki 8fe4852b98 Refactoring, reuse and improve isVariableChangedByFunction() 2017-11-18 11:02:52 +01:00
Daniel Marjamäki 9191e6f112 Fixed #8246 (ValueFlow: known value, function pointer argument) 2017-11-17 23:04:54 +01:00
Daniel Marjamäki 4a9984d73b Fixed #8233 (FP uninitvar found in bash:lib/readline/display.c) 2017-11-06 10:28:07 +01:00
Ayaz Salikhov 19af9bc216 Fix UB when converting float to int (#984) 2017-11-03 14:05:23 +01:00
Daniel Marjamäki 002f6679d5 Fix syntax error 2017-10-21 22:17:07 +02:00
Daniel Marjamäki c4c76aa1ad Use MathLib::bigint_bits 2017-10-21 22:08:34 +02:00
Ayaz Salikhov 64e61d28ba Add an ability to use address sanitizer (#979) 2017-10-21 21:04:14 +02:00
Daniel Marjamäki 05e1e5e0a0 astyle formatting
[ci skip]
2017-10-20 22:11:12 +02:00
Daniel Marjamäki 1d5e3e4f0c Fixed #8247 (False positive knownConditionTrueFalse) 2017-10-20 17:31:58 +02:00
Dmitry-Me 5040491ee6 Size computation code not required outside this translation unit 2017-10-19 19:01:41 +03:00
Dmitry-Me 606e28a3c5 Extract and reuse size computation 2017-10-19 00:25:21 +03:00
Dmitry-Me 34a8d2431f Extract and reuse size computation 2017-10-19 00:20:04 +03:00
Dmitry-Me 8709490903 Clarify expressions with parentheses 2017-10-18 23:40:43 +03:00
Dmitry-Me e356ccca22 Revert "Clarify expression with parentheses"
This reverts commit bbf0a81c2d.
2017-10-18 23:31:44 +03:00
Dmitry-Me bbf0a81c2d Clarify expression with parentheses 2017-10-18 23:24:31 +03:00
Dmitry-Me 151ace2581 Use Platform for char limits computation (#972) 2017-10-18 17:30:47 +02:00
Daniel Marjamäki ad1749738e Fixed #6153 (ValueFlowBeforeCondition: Handle global variables) 2017-10-17 16:55:37 +02:00
Daniel Marjamäki 6d59290858 Fixed #10 (ValueFlow: condition variable has known value in switch case) 2017-10-16 21:51:30 +02:00
Daniel Marjamäki fbccb3ae55 Add errorpath for accessMoved message 2017-10-10 15:49:15 +02:00
Daniel Marjamäki d3c9d06aa4 astyle formatting
[ci skip]
2017-10-08 14:16:45 +02:00
Ayaz Salikhov be2c65eb58 Simplify int vs bool 2017-10-08 07:54:39 +02:00
Daniel Marjamäki 2a6fbe2e3c astyle formatting
[ci skip]
2017-10-05 23:01:42 +02:00
hexcoder 051a18b120 pull request for ticket 8180 (better diagnostic output for bailouts) (#964)
* sync build instructions from readme.txt

* refactored the patch from ticket 8180. Moved logic from macros to the bailoutInternal function

* adapt to new bailout message format

* adapt to new bailout message format

* adapt to new bailout message format

* compile fix for Microsoft platform

* remove directory part from file locations in bailout message (normalize)

* remove directory part from valueflow message filter

* adapt tests to file format without directory part

* adapt tests to file format without directory part

* new line number agnostic assert_equals methods

* new line number agnostic assert_equals methods

* adapt to new method assertEqualsWithoutLineNumbers()

* adapt to new method assertEqualsWithoutLineNumbers()

* Bugfix: do not replace line number with spaces, remove it

* review changes: const char * -> std::string, size_t -> int, std::to_string() -> MathLib::toString()

* set #line at the beginning to guard against insertions from match compiler

* Bugfix: counting lines can be difficult :-) #line 1 -> #line 2

* added method stripDirectoryPart()

* added method stripDirectoryPart()

* used new method Path::stripDirectoryPart()

* new dependency path.h in lib/valueFlow.cpp

* code cleanup, removing redundant temporary objects and casts
2017-10-05 23:03:13 +02:00
Daniel Marjamäki ba8222de1c ValueFlow: Put 'inconclusive' state in the ValueKind. A value can't be both known and inconclusive. 2017-09-20 22:41:36 +02:00
Daniel Marjamäki 87c35cd60e ValueFlowForward: Refactoring handling of compound assignments 2017-09-20 11:45:28 +02:00
Daniel Marjamäki 1dbcba4dd6 Fixed #8221 (ValueFlow: value for static variable that is not written) 2017-09-15 15:58:19 +02:00
Daniel Marjamäki ef1f3fbee6 Fixed #8173 (ValueFlow: use AST when setting values in assignment RHS ((n=42) && n=='A')) 2017-09-14 22:49:47 +02:00
Dmitry-Me a4c20b3606 Break loop early 2017-09-12 07:48:06 +03:00
Dmitry-Me 4126fab1d5 Simplify code with temporary 2017-09-12 07:46:38 +03:00
Dmitry-Me caebf137bc Cache and reuse value 2017-09-12 00:21:36 +03:00
Dmitry-Me 5dba8268e7 Better variable name 2017-09-04 17:53:56 +03:00
Daniel Marjamäki a02fd54a69 ValueFlow: Avoid FPs for aliased variables 2017-09-03 23:24:55 +02:00
Dmitry-Me beba46987d Remove redundant variable 2017-09-01 18:19:25 +03:00
Dmitry-Me 2133350bf0 More useful default value 2017-09-01 18:17:40 +03:00
Dmitry-Me 4663dc205a Cache and reuse value 2017-09-01 18:16:08 +03:00
Daniel Marjamäki 59034e17f1 Refactoring, reuse code to skip lambda functions 2017-08-29 22:35:55 +02:00
Daniel Marjamäki 9c99bc43c2 ValueFlow: Skip wrong handling of lambda functions. TODO: handle lambda functions properly. 2017-08-28 22:39:12 +02:00
Daniel Marjamäki 02a1b7cd2d Fixed #7965 (valueFlowForward: Improved handling of correlated variables) 2017-08-27 19:50:44 +02:00
Daniel Marjamäki 529b255e99 ValueFlow: Better errorpath for increment/decrement 2017-08-25 23:07:26 +02:00
Daniel Marjamäki b1b8e5270a ValueFlow: Better errorpath for increment/decrement 2017-08-25 22:15:52 +02:00
Daniel Marjamäki 50636f75ba ValueFlow: Improved error path for compound assignments 2017-08-24 22:02:49 +02:00
Daniel Marjamäki f10634c021 ValueFlow: Dont try to evaluate '/=0;' 2017-08-23 17:53:05 +02:00
Daniel Marjamäki 167cfb1ac5 valueFlowForward: improve handling of compound assignments 2017-08-23 11:13:47 +02:00
Daniel Marjamäki 3abb62a6d1 Fixed #8036 (valueFlowUninit: strcpy(buf, e = str), free(e);) 2017-08-20 19:47:26 +02:00
Dmitry-Me d3d9c76f01 Fix off by one, resolve C4334 2017-08-14 18:07:36 +03:00
Ayaz Salikhov b8cd7dbb5c Use nullptr instead of 0 or NULL (#936) 2017-08-09 20:00:26 +02:00
Daniel Marjamäki 32fe0aba41 Fixed #8037 (ValueFlow: global variable might be modified by function call) 2017-07-09 12:50:17 +02:00
Daniel Marjamäki bce0776417 Fixed #7795 (ValueFlow: Value is not known after conditional increment ) 2017-06-01 15:16:07 +02:00
Ayaz Salikhov 28aa939d69 iwyu - include what you use 2017-05-27 04:33:47 +02:00
Daniel Marjamäki 6e1544bd49 ValueFlow: Use getOrdinalText() 2017-05-23 15:01:56 +02:00
orbitcowboy ba2b235e24 Fixed: warning: ‘tokvalue’ may be used uninitialized in this function [-Wuninitialized]. 2017-05-22 15:22:38 +02:00
Daniel Marjamäki 58da0df2f6 astyle formatting
[ci skip]
2017-05-20 18:52:48 +02:00
Daniel Marjamäki 82a372a380 Try to clarify ErrorPath texts 2017-05-20 08:47:35 +02:00
Daniel Marjamäki f92b16706c ValueFlow: Add ErrorPath info after for loop 2017-05-19 16:32:58 +02:00
Daniel Marjamäki 2bb54fef69 ValueFlow: Test ErrorPath handling 2017-05-19 14:34:59 +02:00
Daniel Marjamäki cd53d10970 ErrorPath: More information about assignments 2017-05-16 23:12:35 +02:00
Daniel Marjamäki c617851567 ErrorLogger: Added ErrorPath where each item has token and info 2017-05-16 22:38:13 +02:00
Daniel Marjamäki e65d6d3c67 ValueFlow: inherit Value::callstack in calculations 2017-05-16 19:43:55 +02:00
Daniel Marjamäki 8d75d1b920 Partial fix for #8028 (ValueFlow: Origin/callstack of value) 2017-05-15 20:05:11 +02:00
Daniel Marjamäki bc7799dccd Fixed #7888 (false positive from knownConditionTrueFalse with sizeof(int) == sizeof(long)) 2017-05-01 12:23:28 +02:00
Daniel Marjamäki 980ca39fe2 valueFlowForward: better handling of sizeof() in rhs in assignments 2017-04-29 08:25:55 +02:00
Daniel Marjamäki a0a8f8ddd6 ValueFlowUninit: make it more strict 2017-04-28 13:29:09 +02:00
Daniel Marjamäki 89532cf8b9 Fixed #7968 (valueFlowBeforeCondition: better handling of compound assignments) 2017-04-25 20:45:02 +02:00
Daniel Marjamäki 37fd60e879 Fixed #7293 (Use of uninitialized pointer not detected (worked in 1.71)) 2017-04-24 18:27:16 +02:00
Daniel Marjamäki 9a294496c1 ValueFlow::setTokenValue: Fix typo 2017-04-23 21:59:58 +02:00
Daniel Marjamäki a688402617 ValueFlow::setTokenValue: Don't calculate parent value for uninitialized values 2017-04-23 21:58:01 +02:00
Daniel Marjamäki 8a738eefab fixed #7998 (uninitialized variable is not found when used with switch/case) 2017-04-23 18:05:14 +02:00
Daniel Marjamäki 8fe7ee1012 Fixed #7886 (ValueFlow: endless forloop 'for (i = 0, j = 0; i < sz && j < 9; i++)') 2017-03-30 22:02:36 +02:00
PKEuS 3c8f5b85ae Refactorization: Allocate Token::_values (ValueFlow information) dynamically, reducing size of each token by around 10% 2017-03-27 18:48:34 +02:00
PKEuS 97fa9e9d1b ValueFlow: Stop on inline assembly 2017-03-23 20:01:16 +01:00
Daniel Marjamäki ecc59859e1 Don't simplify _Bool in TokenList 2017-03-04 11:13:28 +01:00
Daniel Marjamäki d1c66edb03 ValueFlow: Known values in conditional code 2017-03-03 01:29:34 +01:00
Daniel Marjamäki 47d39d0a14 Revert "Fixed #7888 (1.77 false positive from knownConditionTrueFalse with sizeof(int) == sizeof(long))"
This reverts commit a762511067.
2017-01-10 13:22:48 +01:00
Daniel Marjamäki a762511067 Fixed #7888 (1.77 false positive from knownConditionTrueFalse with sizeof(int) == sizeof(long)) 2017-01-09 22:28:55 +01:00
Daniel Marjamäki b1f7e46491 Fixed #7323 (valueflow: global variables) 2017-01-09 15:53:08 +01:00
Daniel Marjamäki f40bdddbab ValueFlow: Better handling when casting calculation result 2016-12-20 23:09:50 +01:00
Daniel Marjamäki 44ccbdedec ValueFlow: Improved value for cast 2016-12-20 21:37:25 +01:00
Daniel Marjamäki 606bb78297 ValueFlow: Better handling of casts 2016-12-20 19:32:21 +01:00
Daniel Marjamäki e14e86c103 ValueFlow: only set values in conditional code in subfunctions when sure 2016-12-20 11:06:20 +01:00
Daniel Marjamäki 807b653739 ValueFlow: Fix FP in for loops when 2nd expression is 0 2016-12-20 07:54:38 +01:00
Daniel Marjamäki f1ad7368f6 ValueFlow: bool values 2016-12-19 21:21:18 +01:00
Daniel Marjamäki 17aaecbd6b ValueFlow: Improved handling of sizeof 2016-12-18 14:03:48 +01:00
Daniel Marjamäki 4ac5c78e0c Fix wrong iterator usage. Iterator that is erased must be non-const. 2016-12-17 22:20:50 +01:00
Daniel Marjamäki 72e4bc9d88 ValueFlow: skip values that cause false assertion condition 2016-12-17 21:23:14 +01:00
Daniel Marjamäki fd85b493bd astyle formatting
[ci skip]
2016-12-17 18:51:16 +01:00
Frank Zingsheim cb5a5e6a25 Improve Fix #6180 (Access of moved variable still allowed until function is called) 2016-12-17 16:42:46 +01:00
Frank Zingsheim 9a871d33f7 Improve Fix #6180 ("reset" and "clear" clears the move status) 2016-12-17 16:39:30 +01:00
Frank Zingsheim f4ab45f13b Improve Fix #6180 (Do not warn about move if it is part of a reassignment of the variable) 2016-12-17 16:39:30 +01:00
Daniel Marjamäki 31337dda27 ValueFlow: Better handling of && and || in for loop to avoid FP 2016-12-11 21:19:24 +01:00
Frank Zingsheim e0d4720e19 Fix #7829 (false-positive: knownConditionTrueFalse linked to virtual method)
Return values of virtual functions in valueflow are only possible values
since function might be overloaded.
2016-12-11 10:44:05 +01:00
Daniel Marjamäki b098d5fbd6 ValueFlow: We need better handling of casts 2016-12-10 22:09:01 +01:00
PKEuS 2f6350a0d0 Refactorized Library 2016-12-06 14:09:28 +01:00
PKEuS 6e8ac13325 Refactorization:
- Optimized std::string usage
- Replaced list by vector
- Moved iterator into loop head
- Ran AStyle
2016-12-05 17:45:34 +01:00
Daniel Marjamäki 5df8e7f50c Fixed #7596 (ValueFlow: better handling for 'x*(1-x-1)') 2016-12-04 22:39:59 +01:00
Stefan Weil 57b57428c2 Fix some typos in comments (found by codespell)
Signed-off-by: Stefan Weil <sw@weilnetz.de>
2016-11-27 11:40:42 +01:00
Matthias Krüger 213589ee68 ValueFlow: don't perform UB when a function returns shifts of/by negative values. Fixes #7814. 2016-11-24 23:23:47 +01:00
Daniel Marjamäki d40f4e4a55 Fixed #7778 (valueFlowAfterAssign: alias) 2016-11-21 17:26:36 +01:00
Frank Zingsheim c8ff96fe8f Fixed #6180 (Usage of variable after std::move or std::forward) 2016-11-20 15:14:49 +01:00
Matthias Krüger b6614d0aa4 valueflow: bail out earlier when encountering divisions by zero. Fixes #7819.
This caused valueflow to actually try to divide by zero, detected by UBSAN.
2016-11-20 14:38:35 +01:00
Daniel Marjamäki 3b57273ef1 Fix Cppcheck warnings 2016-11-14 07:21:10 +01:00
Daniel Marjamäki 1e31c6c01c ValueFlow: Extended handling of float values 2016-11-14 06:42:52 +01:00
Daniel Marjamäki e1e9eacccc ValueFlow: Added float type 2016-11-13 22:59:56 +01:00
Daniel Marjamäki 4732667488 ValueFlow: allow more value types 2016-11-13 22:33:39 +01:00
Daniel Marjamäki 7ebfb10edd Fixed #7806 (ValueFlow: better handling of subfunction with early return) 2016-11-13 18:19:51 +01:00
Daniel Marjamäki ac7b351d1e ValueFlow: Don't calculate x<<64 and x>>64 2016-11-06 20:40:58 +01:00
Daniel Marjamäki dd69d5eabe ValueFlow: Don't calculate result when there is UB 2016-11-06 17:42:01 +01:00
Alexander Mai ee11f0974a #7769 segmentation fault at setTokenValue() on invalid code. 2016-11-06 14:20:58 +01:00
Daniel Marjamäki ece4b1a06f Fix ValueFlow 2016-11-05 09:59:48 +01:00
Daniel Marjamäki 2885a75ea6 ValueFlow: handle ~ in setTokenValue 2016-11-05 09:29:22 +01:00
Frank Zingsheim d4f01583b6 Fixed TODO (check if function parameter is non-const reference etc..) by common function 2016-11-01 14:06:30 +01:00
Robert Reif 4216b26b8c Fixed #7775 (crash at valueFlowSetConstantValue) 2016-10-26 10:36:02 +02:00
Daniel Marjamäki 8a0f3009ff ValueFlow: inner and outer function return values 2016-10-22 17:22:57 +02:00
Daniel Marjamäki 77cd6c194f ValueFlow: Set 'known' property for function return values 2016-10-22 12:24:15 +02:00
Daniel Marjamäki 86a620a3b4 ValueFlow: Better handling of function return value when there are 0 parameters 2016-10-20 16:10:55 +02:00
Daniel Marjamäki efa3aba32a Remove Tokenizer::simplifyNull() 2016-10-18 21:44:02 +02:00
Daniel Marjamäki fae4a4dacf Fixed #7668 (ValueFlow: return value from abs) 2016-10-17 13:05:19 +02:00
Daniel Marjamäki 7fb812f415 Fixed #7752 (ValueFlow: no conditional value, probably because condition is in ternary operator and/or in function call.) 2016-10-16 07:15:28 +02:00
Daniel Marjamäki ad74421526 Fixed #7756 (ValueFlow: fix bug in valueAfterAssign, same variable in lhs and rhs) 2016-10-15 19:09:50 +02:00
Boris Egorov a32f61ae4a Fixed #7139 (ValueFlow: Missed shift operation in for expression) 2016-10-04 13:09:33 +07:00
Daniel Marjamäki 254e5675ff Fixed #7573 (Tokenizer: FP caused by constant folding) 2016-08-28 19:11:05 +02:00
PKEuS e0838ff194 Fixed crash on garbage code (#7699) 2016-08-21 11:06:48 +02:00
Daniel Marjamäki 305609f4fb Fixed #7688 (setTokenValue: crash when there is no 2nd operand for ternary operator) 2016-08-17 18:44:41 +02:00
Daniel Marjamäki 1f98af654a ValueFlow: better handling of ? when condition result is known 2016-08-15 14:19:35 +02:00