Commit Graph

9139 Commits

Author SHA1 Message Date
Rikard Falkeborn a1a14b8465 Fix FP with cast pointer to free() (#1961)
This fixes false positives when the pointer passed to free() (or similar
deallocation functions) is cast using a c-style cast.
2019-07-10 09:13:59 +02:00
IOBYTE 7ac22677b8 regression test for daca codeblocks crash (#1974) 2019-07-10 07:16:16 +02:00
Daniel Marjamäki 58076bc672 SymbolDatabase: Better handling of smart pointers 2019-07-09 17:32:19 +02:00
Daniel Marjamäki b68f50ea25 appveyor: check that cmake builds work also. run test/cli tests. 2019-07-09 07:46:53 +02:00
Daniel Marjamäki a0b22410cf SymbolDatabase: Better handling of smart pointers 2019-07-07 21:52:49 +02:00
IOBYTE e551057f59 Refactor Tokenizer::simplifyUsing to use continue to reduce indentation (#1967)
* Refactor Tokenizer::simplifyUsing to use continue to reduce indentation

added function findTemplateDeclarationEnd to skip template declarations
to reduce duplicate code

* fix travis build
2019-07-07 18:33:33 +02:00
Sebastian db43dcd601
posix.cfg: Add `<use-retval/>` to pthread_mutex_trylock (#1959)
Ignoring the return value of pthread_mutex_trylock is always a bug.
There is no other way to check if the mutex is locked or not after the
call.
2019-07-07 12:57:02 +02:00
IOBYTE c902c5f688 Fix #9197 (Template name cache: Assertion `tok && tok->str() == ">"' failed.) (#1964) 2019-07-07 10:20:43 +02:00
Paul Fultz II b0d10273ed Fix issue 3695: Handle class pointers
This switches to use lifetime analysis to check for assigning to non-local variables:

```cpp
class test
{
public:

  void f()
  {
    int x;
    this->ptr = &x;
  }

protected:
  int *ptr;
};
```
2019-07-07 10:16:19 +02:00
IOBYTE 9569fa1374 Partial fix for #9191 (simplifyTypedef: Problem when namespace is used) (#1952)
* Partial fix for #9191 (simplifyTypedef: Problem when namespace is used)

This fixes simplifyUsing which has the same problem as simplifyTypedef.

simplifyUsing was designed to support using namespace but it was never
implemented. The changes are minor to add it.

simplifyTypedef requires much more work to support using namespace.

* reduce scope of variable

* make idx const
2019-07-06 20:22:13 +02:00
PKEuS ae86536128 Updated to Visual Studio 2019 2019-07-06 12:11:19 +02:00
Paul Fultz II 65af02f0cf Fix crash with lambda capture (#1960) 2019-07-06 10:46:17 +02:00
Rikard Falkeborn 2bd026dd2a Add tests of std.cfg buffer size (#1958)
Includes a testcase for trac ticket #1379 which was fixed in
839fcddd8a.
2019-07-06 08:55:17 +02:00
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
Paul Fultz II e0ced1c415 Parse lambdas as functions (#1955)
* Parse lambdas as functions

* Fix issue with missing paren

* Fix error when parsing non-existent args

* Remove unused function variable
2019-07-05 12:30:42 +02:00
Rikard Falkeborn 2a17e624d9 Overlapping sprintf, improve handling of casts (#1945)
* Overlapping sprintf, improve handling of casts

If there is a cast of the argument buffer, cppcheck would print out the
expression including the cast, which looks a bit strange to talk about

    Variable (char*)buf is used as...

Instead, only print the variable name without the cast.

Also, handle arbitrary many casts (the previous code only handled one).
Multiple casts of the input arguments is probably an unusual case in
real code, but can perhaps occur if macros are used.

* Fix printing of variable

... and add a test.

* Simplify testcase
2019-07-05 12:27:39 +02:00
Paul Fultz II 5801fb26f0 Fix syntax error with lambda captures (#1954)
* Fix syntax error with lambda captures

* Fix issue when using initializer in lambdas
2019-07-05 12:26:01 +02:00
Sebastian c45dff1e1d
openmp.cfg: Add library configuration for OpenMP (#1956)
See https://www.openmp.org/
2019-07-05 03:00:52 +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
Rikard Falkeborn 60a213e6a5 Fix #9047 (c-style casts before malloc) (#1930)
* Fix #9047 (c-style casts before malloc)

Note that there are still no warnings for c++-style casts

* Fix memleak check with casts of assignments in if-statements

* Fix possible null pointer dereference

As pointed out by cppcheck.

* Add check of astOperand2 when removing casts

This is similar to how it is done in other checks.
2019-07-03 08:39:44 +02:00
IOBYTE c4933acb5a Fixed #9147(SymbolDatabase bailout: unhandled code) (#1948)
* Fixed #9147(SymbolDatabase bailout: unhandled code)

* add test for #9183
2019-07-03 08:35:48 +02:00
Daniel Marjamäki f84dcc4738 astyle formatting
[ci skip]
2019-07-03 08:29:47 +02:00
Paul Fultz II 8f4cb36e1e Check for more garbage code (#1949)
* Check for garbage commas

* Find garbage dot operator
2019-07-03 08:28:24 +02:00
Ken-Patrick d6f6e68fa2 Fix false positive 9167 (#1904)
Skip returns from local class/struct definition in FwdAnalysis.
2019-07-03 08:17:06 +02:00
Scott Furry da213d1534 More Zero/Null as pointer constant corrections (#1947)
Further to pull request #1938. Changes were missed in previous commit.

Resolve warnings `warning: zero as null pointer constant` in code by
using C++ 11 recommended `nullptr`.
2019-07-02 20:37:44 +02:00
IOBYTE 5642778206 Fixed #9193 (functionStatic false positive (inconclusive)) (#1943) 2019-07-02 11:40:57 +02:00
IOBYTE bf4e1ef790 template simplifier: consistently handle templates with no arguments (#1939)
this fixes daca boost1.67 crashes
2019-07-01 07:01:14 +02:00
Daniel Marjamäki 0eedcfc160 Fixed #7464 (warn about opposite if and else-if conditions) 2019-06-30 23:26:49 +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
Daniel Marjamäki 84cc09d17c Update Copyright 2019-06-29 07:49:14 +02:00
Rikard Falkeborn 0d69a86bf8 Remove debug printout (#1933) 2019-06-28 22:08:32 +02:00
IOBYTE 8b347aed42 Fixed #8663 (Stack overflow with template disambiguator) (#1932) 2019-06-28 22:07:21 +02:00
IOBYTE 16788df055 template simplifier: various small fixes (#1916)
* fix adding instantiation of first argument to an instantiation

* add support for function pointer template variables

* fix more cases where templates ending in ">>" are changed to end in "> >"

* fix travis build

* standard types can't be a template parameter name

* remove redundant level == 0 checks

* fix lambda in template variable

* fix a test
2019-06-28 11:14:20 +02:00
Ken-Patrick 927d139488 Fix FP #9165 (#1928)
Properly check the type of the expressions, instead of using the type
of the tokens
2019-06-27 07:48:44 +02:00
Sebastian d745dcc0eb
gtk.cfg: Add g_error_*() functions (#1922) 2019-06-25 19:19:10 +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
Daniel Marjamäki 175070ca50 Revert "Fixed #8938 (FP identicalInnerCondition)"
This reverts commit 0edf0b5628.

This bailout seems to cause many false negatives
2019-06-22 21:57:19 +02:00
Daniel Marjamäki de9c999d79 Better handling of spaces in paths 2019-06-22 19:20:15 +02:00
Daniel Marjamäki 7ceb51a952 Try to improve 'clarifyStatement' warning message 2019-06-22 08:44:41 +02:00
Daniel Marjamäki 16bed07c60 Clarify tests 2019-06-22 07:50:43 +02:00
Daniel Marjamäki cf79830afd Revert "Remove bailout. It hides lots of warnings for real code to avoid FP in unused templates."
This reverts commit 2a4be5ae1c.

When I look at daca@home now there are still lots of false negatives. So this bailout did not cause as much false negatives as I thought.
2019-06-19 22:29:00 +02:00
Ken-Patrick 44d6066c6f FP on assignment through pointer (#1887)
* Fix FP when assigning through pointers

* Add test case for false positive

cppcheck would faulty warn:
"Condition '*b>0' is always true"
2019-06-17 21:25:15 +02:00
IOBYTE 246576fceb Fixed #9178 (Assertion `brackets1.empty() == false' failed on valid C++ code) (#1905)
This fixes a nasty intrinsics related bug causing instantiations that
shouldn't happen.
2019-06-17 21:18:27 +02:00
Rikard Falkeborn b1c8d81bcc Refactoring; Use range for loop (#1900) 2019-06-17 13:17:45 +02:00
Daniel Marjamäki 2a4be5ae1c Remove bailout. It hides lots of warnings for real code to avoid FP in unused templates. 2019-06-16 19:01:45 +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
Daniel Marjamäki 6d982d4320 Testing: comment/naming 2019-06-15 13:01:34 +02:00