Commit Graph

8624 Commits

Author SHA1 Message Date
Daniel Marjamäki 3af0d73f82 Unused value: Fixed false negatives for loops 2018-12-16 11:18:37 +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 1bfe98447a FwdAnalysis: Tweak possiblyAliased 2018-12-15 11:54:00 +01:00
Daniel Marjamäki f26549e5ab Fixed #8896 (Tokenizer: Anonymous struct) 2018-12-15 08:42:35 +01:00
IOBYTE a1c275436f Fix #8902 (Crash in TemplateSimplifier) (#1521) 2018-12-15 07:52:47 +01:00
Daniel Marjamäki 37416010ef Unused value: Fix false positive (ast, {}) 2018-12-14 18:56:09 +01:00
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