e32ccb591b
Fixed clarifyCalculation fp for 'a % b ? "a" : "b"'. seen in daca@home.
2020-09-29 08:29:23 +02:00
8395522390
Fixed #9919 (False positive: clarifyCalculation for code: flags & ZRL_EOL_NUL ? '\0' : '\n')
2020-09-28 19:18:34 +02:00
5578b09452
More fixing for #9914 . New warning id and warning message when variable expression is explicitly hidden.
2020-09-26 13:49:47 +02:00
05b0a0f970
Make duplicateAssignExpression warnings inconclusive for 'x&&false' etc. ( #9914 )
2020-09-26 10:50:58 +02:00
887b40e08b
Fix issue 9916: False positive: duplicateAssignExpression when it's checked if variables have initial value later ( #2825 )
2020-09-26 10:31:40 +02:00
5856fef83b
Fixed #9914 (False positive: knownArgument for 'x && false')
2020-09-25 20:27:16 +02:00
5b78c64420
Fixed testrunner
2020-09-25 20:04:07 +02:00
485153c930
Limit variableScope check. Do not check C code if all local variables are declared at function level.
2020-09-25 08:34:47 +02:00
801cc8d331
Fixed knownArgument false positive for pointer
2020-09-24 19:48:20 +02:00
c08e1a9a94
Fix knownArgument false positive when sizeof is used
2020-09-24 19:43:39 +02:00
514b7f4da4
Fixed #9906 (False positive: constParameter (function pointer))
2020-09-23 22:10:47 +02:00
107ee57e7a
Fixed #9909 (False positive: knownArgument for calculation 'self->maxsize * sizeof(intptr_t)')
2020-09-21 20:02:55 +02:00
730b95331e
Fixed #9905 (False positive: known argument 'header.length()')
2020-09-20 20:17:10 +02:00
75b955b9c6
Fix issue 9833: False positive: Division by zero when using pointer to struct
2020-09-09 21:29:26 -05:00
bfe53fce04
Fix issue 9878: false positive: multiCondition ( #2787 )
2020-09-09 15:39:36 +02:00
a4f43fc2ad
Fix issue 8234: false negative: (warning) Opposite inner 'if' condition leads to a dead code block. ( #2781 )
2020-09-07 07:53:41 +02:00
1daf1ec108
Fixed #9875 (Crash)
2020-09-04 19:15:48 +02:00
5acd6fcdc8
astyle formatting
2020-09-03 18:55:40 +02:00
08ea6435ac
fix false positives in constParameter ( #2758 )
2020-09-03 18:44:44 +02:00
3e99bff764
Same expression when comparing with zero ( #2762 )
2020-08-31 08:48:48 +02:00
02287d9d34
Fix issue 7324: valueFlowForward : decrement ( #2737 )
2020-08-24 13:10:36 +02:00
5372e93964
Fixed #9825 (redundantAssignment: Do not warn about volatile data)
2020-08-06 22:18:25 +02:00
7a85b8e452
Do not ask that calculation is clarified when different order would be invalid
2020-08-05 13:20:18 +02:00
61ccf888b3
Fix some false positives when the same expression at different places does not have the same value
...
Typically with
```
int F(int *f);
void F2(int *a, int *b) {
int c = *a;
F(a); // modifies *a
if (b && c != *a) {}
}
```
we would get the following FP:
```
[test.cpp:3] -> [test.cpp:5]: (style) The comparison 'c != *a' is always false because 'c' and '*a' represent the same value.\n
```
I guess it boils down to isSameExpression only checking that the
expression is the same (in the above case, "*a" and "*a" are indeed the
same), but there's not real check on the values.
So the patch here is a bit hackish, and we still have false negatives in
cases with dereferenced pointers.
2020-07-11 14:13:18 +02:00
d2b2bae7bf
Fixed #7733 (False positive: scope of the variable can be reduced (variable is used in hidden code))
2020-07-01 08:24:52 +02:00
cf475fab51
Fix issue 9778: False positive: constParameter when returning non-const reference cast
2020-06-26 15:47:59 -05:00
1676ad5f45
Fix issue 9710 and 9767: Use AST to get function from argument
2020-06-25 12:54:46 -05:00
03b41ac987
Fix issue 9718: False positive: Parameter can be declared const when written to via stream extraction operator ( #2677 )
2020-06-13 09:20:40 +02:00
eb4754b7d9
Fix issue 9587: False positive: parameter can be declared with const ( #2667 )
2020-05-31 10:10:10 +02:00
c86cfdaa50
Fixed #9736 (False positive: knownArgument in assert calls)
2020-05-22 11:49:28 +02:00
a9d8b3495d
feat: add modulo of one check ( #9528 ) ( #2650 )
2020-05-20 23:01:32 +02:00
c9d8f607df
Optimization: Reduced peak memory usage (30% in my test case) by immediately deleting simplecpp::TokenList while creating the cppcheck TokenList.
2020-05-19 12:08:17 +02:00
330e634937
Revert "TestTrac: Add separate file for black box / integration tests in testrunner"
...
This reverts commit e895fa4c3f
2020-05-19 07:53:54 +02:00
e895fa4c3f
TestTrac: Add separate file for black box / integration tests in testrunner
2020-05-18 20:22:00 +02:00
7bfd686f04
Fix #9700 duplicateBranch false positive from missing scope operator :: in ast ( #2646 )
2020-05-18 19:31:13 +02:00
08ddd84780
Update copyright year
2020-05-10 11:16:32 +02:00
3e0218299b
Revert "Update copyright year"
...
This reverts commit 6eec6c4bd5
2020-05-10 11:13:05 +02:00
6eec6c4bd5
Update copyright year
2020-05-10 11:11:34 +02:00
da6e0308c5
Fixed #9195 (False positive: shadowFunction when constructor is shadowed)
2020-04-20 18:02:10 +02:00
54978847c5
Fixed #8916 (FP: followVar does not seem to handle non-const method call properly)
2020-04-18 19:54:55 +02:00
5376ba1701
AST: Throw validation exception if ternary operator is missing operands
2020-03-07 21:46:38 +01:00
b795d30db6
Enable another zeroDivCond test which got fixed recently
2020-03-06 17:15:54 +01:00
f6e7fb4bd9
Bugfix valuetype for some integer constants ( #2545 )
2020-02-19 07:51:39 +01:00
320cb9008f
minor tweaks of knownConditionTrueFalse
2020-02-15 20:21:13 +01:00
b1c6f2946a
Fix redundant FP assignment with unsigned zero ( #2521 )
...
* Refactor isNullOperand out of FwdAnalysis
* Improve isNullOperand
* Fix redundantAssignment FP with unsigned zero
* isNullValue check number
* Enhance isNullOperand to handle c++ casts
Also handle cast of NULL.
2020-02-09 11:16:08 +01:00
e78775fac3
astyle formatting
...
[ci skip]
2020-01-10 11:31:12 +01:00
9afeef01c6
Improve duplicateExpressionTernary ( #2484 )
...
Test both the cases where sizeof(int) == sizeof(long) and when they are
different to improve testing.
2020-01-10 10:02:50 +01:00
eca7ee9260
9356: Prevent false positive when passing non-const reference to member constructor ( #2370 )
...
* Add cases for 9356
* 9356: Prevent false positive when passing non-const reference to member constructor
This workarounds false positives 'Parameter can be declared with const [constParameter]'
when said parameter is used in constructor call. It assume the
constructor call might change the parameter (without any checks.
The drawback is that we have false negative, in cases where we could
check the constructor actually takes a const reference, or a copied by
value parameter.
* Add todo comment in isVariableMutableInInitializer
2020-01-04 11:36:45 +01:00
235ef0a01e
Fixed #9420 (False positive - redundantInitialization)
2019-12-18 19:39:23 +01:00
bcfc5924fa
Fixed #9532 (False positive: Out of bounds access in expression 'v[0]' because 'v' is empty.)
2019-12-14 19:04:19 +01:00
06752d75a5
Fix issue 9485: knownConditionTrueFalse false positive with integer constants ( #2447 )
...
* Fix issue 9485: knownConditionTrueFalse false positive with integer constants
* Formatting
2019-12-14 09:15:00 +01:00
064795a705
Remove duplicate test
...
This partially reverts commit 047418dda1
2019-12-11 19:17:59 +03:00
f5df06a143
Run astyle [ci skip]
2019-12-08 11:22:19 +01:00
047418dda1
Improve test coverage for redundant bitwise operations
2019-12-06 19:14:03 +03:00
ed1acc319d
Fixx issue 9355: FP constParameter when returning non-const reference to struct member ( #2373 )
2019-11-18 06:39:50 +01:00
38dea4719b
Fix #9166 (print proper types in invalidCast message) ( #2347 )
...
* Fix #9166 (print proper types in invalidCast message)
* Use ValueType->str()
* astyle
* Set default sign to avoid issues on different platforms
2019-11-11 07:17:50 +01:00
0b97f37736
Improve test coverage
2019-11-01 18:41:10 +03:00
68ea60d207
Try to make Travis happy
2019-10-20 07:44:56 +02:00
00fae7fb42
Fixed #9261 (Inconsistent violation report between using global enum and namespaced enum.)
2019-10-20 07:07:38 +02:00
4943771e41
Fix #9262 (False positive on variable assignment when putting enum in namespace)
2019-10-19 21:41:50 +02:00
99ef64459b
Fixed #9344 (FP redundantAssignment related to increasing index variable for vector)
2019-10-17 18:31:05 +02:00
506a952ad2
Parse `extern "C"`, and use it to avoid FP reference warnings ( #2234 )
...
Previously, cppcheck discarded the `extern "C"` specifier. This patch modifies cppcheck to parse each as a Scope in the symbol database, then uses that scope to avoid false positives when making recommendations about changing a function argument to be a reference (since variable references is a C++ feature, unavailable in C, and thus unavailable in `extern "C"`).
2019-10-08 17:48:09 +02:00
eac040a00b
Various clang-tidy fixes ( #2192 )
...
* use range loops
* removed redundant string initializations
* use nullptr
* use proper boolean false
* removed unnecessary continue from end of loop
* removed unnecessary c_str() usage
* use emplace_back()
* removed redundant void arguments
2019-09-25 15:25:19 +02:00
ad8abdb0c3
Add impossible values to ValueFlow ( #2186 )
...
* Add impossible category
* Replace values
* Try to adjust known values
* Add ! for impossible values
* Add impossible with possible values
* Remove contradictions
* Add values when the branch is not dead
* Only copy possible values
* Dont bail on while loops
* Load std lib in valueflow
* Check for function calls
* Fix stl errors
* Fix incorrect impossible check
* Fix heap-after-use error
* Remove impossible values when they are lowered
* Show the bound and remove overlaps
* Infer conditions
* Dont push pointer values through dynamic_cast
* Add test for dynamic_cast issue
* Add shifttoomanybits test
* Add test for div by zero
* Add a test for issue 9315
* Dont make impossible value inconclusive
* Fix FP with shift operator
* Improve handleKnownValuesInLoop for impossible values
* Fix cppcheck warning
* Fix impossible values for ctu
* Bailout for streams
* Check equality conditions
* Fix overflows
* Add regression test for 9332
* Remove duplicate conditions
* Skip impossible values for invalid value
* Check for null
* Rename bound to range
* Formatting
2019-09-20 15:06:37 +02:00
068b0b246c
Fix issue 9352: FP constParameter and constVariable for auto& in combination with ternary ?: operator ( #2173 )
2019-09-13 08:33:30 +02:00
e657cf4073
Fix issue 9320: False positive knownConditionTrueFalse related to truncation ( #2144 )
2019-09-05 15:15:58 +02:00
a9fda3f488
Clarify redundantVarAssignment warnings
2019-09-04 10:55:41 +02:00
4bd9d76a4c
Try to make Travis happy
2019-08-25 10:24:13 +02:00
82eec11898
Created redundantInitialization id
2019-08-25 09:45:39 +02:00
324e5e581b
Redundant assignments: Fix false positive when reassignment expression contains assembler
2019-08-24 20:15:52 +02:00
7061cc334b
RedundantAssignment: Don't warn for initialization with {0}
2019-08-23 08:51:16 +02:00
aaeec462e6
Re-enable valueFlowSubFunction ( #2063 )
...
* Re-enable valueFlowSubFunction
* Formatting
* Skip ternary operators in subfunctions
* Fix test with iostreams
* Fix FP with multiple parameters
2019-08-05 16:26:32 +02:00
744a94ad5a
Fix issue 9231: FP constParameter - argument passed parent ctor ( #2032 )
2019-07-24 20:59:58 +02:00
bb52a63c4e
Add check for const variables
...
When a local reference is declared, this will check if that local reference can be declared as `const`.
2019-07-24 09:59:01 +02:00
d11d6f112e
Detect shadowed arguments
2019-07-17 17:08:42 +02:00
cf06acae08
Fixed #5995 (False negative selfAssignment regression from 1.65)
2019-07-13 21:45:54 +02:00
8f4cb36e1e
Check for more garbage code ( #1949 )
...
* Check for garbage commas
* Find garbage dot operator
2019-07-03 08:28:24 +02:00
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
7ceb51a952
Try to improve 'clarifyStatement' warning message
2019-06-22 08:44:41 +02:00
16bed07c60
Clarify tests
2019-06-22 07:50:43 +02:00
5d10b57b04
Fixed #8997 (False positive redundantAssignment when pointer is updated with +=)
2019-05-31 12:24:31 +02:00
9838bfa79f
Fix false positive in constArgument when passing struct member ( #1845 )
2019-05-21 10:41:16 +02:00
57c6628732
Revert 'Cleaning up unsimplified templates'. This fix caused problems.
2019-05-16 21:11:04 +02:00
4d9b1e6c3d
Fixed #9094 (Tokenizer::createLinks2 problem with 'x%x<--a==x>x')
2019-05-11 19:11:40 +02:00
d58d4273f9
Cleaning up unsimplified templates
2019-05-11 13:00:03 +02:00
253f2c9e9d
Fixed #9043 (false positive & regression: Variable '*s' is reassigned a value before the old one has been used.)
2019-04-16 19:07:26 +02:00
773d19b2d6
Fix compiler errors. After removing the -std=posix.
2019-04-12 10:41:53 +02:00
3f9dd4c567
Variable scope: Fix FP for reference variable in range for loop
2019-04-02 12:59:24 +02:00
5b72e1f568
Fixed #9040 (Type alias 'BOOL' declared with 'using' keyword breaks type detection) ( #1759 )
...
Moved simplifyUsing from TemplateSimplifier to Tokenizer.
2019-03-26 07:09:56 +01:00
418eb43d45
Fixed #9032 (False-positive detection of reassigned value before used for pointer parameter)
2019-03-23 19:01:02 +01:00
3dc34f1515
Disable all simplified checks
2019-03-16 09:17:50 +01:00
a4269042e8
Add regression test for #8994 ( #1733 )
...
Trac ticket #8994 was fixed in b222953bae
2019-03-11 06:14:37 +01:00
f9a12b2a71
Fix small mistake in unit test
2019-03-07 06:38:58 +01:00
6eaf2c03d9
CheckOther::checkInvalidFree: Move check to normal checking. And clarify the message.
2019-03-07 06:35:44 +01:00
f20936ed8a
Moved CheckOther::checkPassByReference to normal checking
2019-03-06 20:59:45 +01:00
e846312fed
Check subtraction of pointers to different objects
2019-02-27 06:55:48 +01:00
68062e3702
Fixed #8954 (false positive: Local variable x shadows outer variable)
2019-02-23 16:22:22 +01:00
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
941dd79f0d
Fix FP issue 8986: constArgument check warns for elements of const array ( #1683 )
2019-02-22 06:39:59 +01:00
cf1ad5087a
Extend constStatement checker
...
This reworks constStatement to find more issues. It catches issue [8827](https://trac.cppcheck.net/ticket/8827 ):
```cpp
extern void foo(int,const char*,int);
void f(int value)
{
foo(42,"test",42),(value&42);
}
```
It also catches from issue [8451](https://trac.cppcheck.net/ticket/8451 ):
```cpp
void f1(int x) {
1;
(1);
(char)1;
((char)1);
!x;
(!x);
~x;
}
```
And also:
```cpp
void f(int x) {
x;
}
```
The other examples are not caught due to incomplete AST.
2019-02-15 13:31:40 +01:00
Daniel Marjamäki
Paul Fultz II
shaneasd
Ken-Patrick Lehrmann
miltolstoy
PKEuS
amai2012
Rikard Falkeborn
Dmitry-Me
Steve Mokris
Oliver Stöneberg
Scott Furry
IOBYTE