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
dc4e7cef88
Run simplifyPlatformTypes on library return types ( #1672 )
...
Add a call to simplifyPlatformTypes() in
SymbolDatabase::setValueTypeInTokenList() to simplify return types of
library configured functions. This fixes the FN in #8141 . Regression
tests are added, both for the original issue and another FN in the comments.
In order to do that, move simplifyPlatformTypes() to TokenList from Tokenizer.
This is a pure refactoring and does not change any behaviour. The code was
literally copy-pasted from one file to another and in two places
'list.front()' was changed to 'front()'.
When adding the call to simplifyPlatformTypes(), the original type of
v.size() where v is a container is changed from 'size_t' to 'std::size_t'.
Tests are updated accordingly. It can be noted that if v is declared as
'class fred : public std::vector<int> {} v', the original type of 'v.size()'
is still 'size_t' and not 'std::size_t'.
2019-02-15 13:29:52 +01:00
bd7790fd8c
Update copyright year
2019-02-09 07:24:06 +01:00
d7c20b15e7
Fix FP with const argument when doing a variable and cast ( #1649 )
2019-02-07 14:59:09 +01:00
91de606243
TestOther: Shorter test cases ( #1637 )
...
* Remove newlines after check(
* Remove unneeded statements after if-statements
As an example, the previous test case
check(
"bool foo(int x) {\n"
" if (x < 0)"
" return true;\n"
" return false;\n"
"}");
is changed to
check("void foo(int x) {\n"
" if (x < 0) {}\n"
"}");
2019-01-31 23:57:05 +01:00
7779a9186e
Use valueflow in unsigned less than zero checker ( #1630 )
...
The unsigned less than zero checker looked for patterns like "<= 0".
Switching to use valueflow improves the checker in a few aspects.
First, it removes false positives where instead of 0, the code is using
0L, 0U, etc. Instead of having to hard code the different variants of 0,
valueflow handles this automatically. This fixes FPs on the form
uint32_t value = 0xFUL;
void f() {
if (value < 0u)
{
value = 0u;
}
}
where 0u was previously not recognized by the checker. This fixes #8836 .
Morover, it makes it possible to handle templates properly. In commit
fa076598ad#3233
template<int n> void foo(unsigned int x) {
if (x <= n);
}
foo<0>();
but give a warning for the following case
template<int n> void foo(unsigned int x) {
if (x <= 0);
}
Previously, both these cases gave inconclusive warnings.
Finally, it makes it possible to give warnings for the following code:
void f(unsigned x) {
int y = 0;
if (x <= y) {}
}
Also, previously, the checker for unsigned variables larger than 0, the
checker used the string of the astoperand. This meant that for code like
the following:
void f(unsigned x, unsigned y) {
if (x -y >= 0) {}
}
cppcheck would output
[unsigned-expression-positive.c] (style) Unsigned variable '-' can't be negative so it is unnecessary to test it.
using expressionString() instead gives a better error message
[unsigned-expression-positive.c] (style) Unsigned expression 'x-z' can't be negative so it is unnecessary to test it.
2019-01-31 09:30:29 +01:00
080c9d53af
8205 regression test ( #1618 )
...
* Fix trac ticket reference
* Add regression test for #8205
Ticket #8205 was fixed in f65cf220ba
2019-01-24 07:20:26 +01:00
8356ec6774
Add regression test for #6906 and #7284 ( #1614 )
...
* Add regression test for #6906
Ticket #6906 was fixed in f65cf220ba#7284
Ticket #7284 was fixed in 5d1fdf7958
2019-01-23 09:09:03 +01:00
8dd641b8be
Use OVERRIDE in test
2019-01-12 15:45:25 +01:00
19514331fb
Fixed #8907 (unknown macro not detected)
2019-01-01 19:30:13 +01:00
a73e989d1a
isConstVarExpression: Fix FPs when there is C++ cast
2019-01-01 11:34:44 +01:00
ac357a96f7
Fixed #7384 (confuses syntax with variable name / "variable '(' is less than zero")
2018-12-31 18:36:06 +01:00
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
fe38e256cc
Fixed #7907 (FN: redundant assignment inside switchcase, overwritten by assignment outside of switch)
2018-12-17 16:10:47 +01:00
858d9a18a7
Fixed #3857 (false negative: (style) Variable 'var' is assigned a value that is never used)
2018-12-17 15:16:47 +01:00
9b973e652c
Issue 8830: New check: Function argument evaluates to constant value
...
Add a check for function arguments that can be constant:
```cpp
extern void bar(int);
void f(int x) {
bar((x & 0x01) >> 7); // function 'bar' is always called with a '0'-argument
}
```
2018-12-17 06:04:24 +01:00
21eb1c5e22
FwdAnalysis: Fix false negatives for struct members
2018-12-16 18:32:34 +01:00
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
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
ba564076db
Fixed #7907 (FN: redundant assignment inside switchcase, overwritten by assignment outside of switch)
2018-12-02 14:04:59 +01:00
13c6489571
Redundant variable assignment: Fix FN for struct members
2018-11-27 18:22:22 +01:00
affd03f1d6
Minor tweak for redundantVariableAssignment
2018-11-26 11:16:50 +01:00
0160f80ffe
redundantVarAssignment: avoid FPs when loops are used
2018-11-25 10:32:30 +01:00
22f736eae2
redundant variable assignments: avoid FPs for initializations
2018-11-25 08:49:09 +01:00
2f66b31d43
redundantAssignmentInSwitch: fix false positive when there is goto
2018-11-24 21:39:01 +01:00
866688c70a
Rewriting redundantAssignment checker
2018-11-24 10:03:54 +01:00
a8cbbe0e16
Fixed #8816 (FP shadowLocal - variable shadows a template function?)
2018-11-19 07:00:15 +01:00
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
3f55707b30
Fixed #8064 (Taking the address of a moved variable is not accessing it)
2018-11-11 12:47:27 +01:00
4cef2e94e7
Fixed #8368 (FP redundantAssignment - assignment has unknown side-effects)
2018-11-10 18:42:13 +01:00
1d5e797e6d
testother: Fixed typos in tests. Replaced 'voif' with 'void'.
2018-11-04 14:46:22 +01:00
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
29feaa5a51
Tokenizer: Avoid constant folding
2018-10-20 10:51:50 +02:00
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
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
1245a036f7
Add check for shadow variables
2018-10-16 20:17:27 +02:00
75caf8e4de
Fix #8230 : FP unknown evaluation order on comma expression in while clause ( #1415 )
...
The while part of a do-while loop looks almost like a function call, so
extend the check for function calls to ignore while-statements.
Note that there was only an FP when checking c-code, since the check is
disabled for c++-code. Therefore, make sure the test cases are run on a
c-file.
2018-10-09 14:44:01 +02:00
aa58f41e6d
Fixed #7152 (False positive for redundantAssignment after calling a lambda function)
2018-10-08 21:07:21 +02:00
e170a45230
Enable followVar for opposite expressions ( #1404 )
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Enable followVar for opposite expressions
2018-10-04 21:17:47 +02:00
4598995564
Enable followVar for duplicate ternary expressions ( #1406 )
2018-10-01 14:31:06 +02:00
f65cf220ba
Fix false positives in unknownEvaluationOrder when using followVar ( #1391 )
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Fix false positives in unknownEvaluationOrder when using followVar
2018-09-28 08:38:24 +02:00
5bebeec224
Fix issue 8775: Dont follow aliased variables ( #1390 )
2018-09-24 06:37:47 +02:00
afe09f4d7a
Temporarily comment out the followVariable() handling
2018-09-23 16:03:18 +02:00
90a29d986b
Fix issue 8730: Dont follow variables with unknown symbols ( #1374 )
2018-09-12 17:30:18 +02:00
f4f3f81e8f
Fix issue 8741: Require pure when following variables in isSameExpression ( #1373 )
2018-09-09 07:08:32 +02:00
5a2362b2a0
Fix issue 8738: Dont warn about multiconditions when value is known ( #1369 )
2018-09-07 15:02:34 +02:00
2da958efb5
Fix issue 8722: Avoid duplicate messages due for followVar ( #1367 )
2018-09-06 06:55:36 +02:00
b46e25c18e
Fix issue 8730: False positive: Opposite expression on both sides of && ( #1366 )
2018-09-05 18:07:01 +02:00
08f301a0de
Reenable followVar ( #1363 )
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Reenable followVar
2018-09-05 05:53:33 +02:00
93be440f92
Fix issue 8709: crash with switch statement with followVar ( #1362 )
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* Fix crash with switch statement
* Update comment
2018-09-03 19:54:14 +02:00
0e5fabf4dc
Dont follow volatile variables ( #1365 )
2018-09-03 19:51:48 +02:00
8353f94b93
Fix crashes in followVarExpression ( #1358 )
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* Fix crashes in followVarExpression
* Add a regression test for issue 8717
* Skip reference declarations
2018-09-02 08:28:53 +02:00
a331206b44
Temporarily disable followVariableExpressions(), there are problems that should be fixed.
2018-09-01 08:32:06 +02:00
7591616f43
Fixed #8710 (Update message duplicateExpression when operand is integer literal)
2018-08-30 18:28:34 +02:00
a5f4c5d0eb
Improve message for same expressions ( #1349 )
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* Improve message for same expressions
* Update message
2018-08-25 14:25:31 +02:00
c5154286da
Fix issue 8687: false positive with same expression ( #1336 )
2018-08-13 12:55:41 +02:00
80290a15e0
Fix FP with duplicate assign ( #1330 )
2018-08-08 08:31:31 +02:00
c3a44ce56b
astyle formatting
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[ci skip]
2018-08-07 18:06:51 +02:00
f603b529df
Fix issue 8413: Condition is always false 'i=expr; if (i != expr) {}' ( #1295 )
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* Follow variables when comparing same expression
* Remove assert include
* Dont follow function arguments
* Improve the checking to check more cases
* Add more tests
* Check if the variable is used inside a loop
* Follow both variables
* Only skip loops when variable is modified in scope
* Fix FP when followed variable is modified
* Dont follow arrays
* Skip pointer indirection
* Make recursive
* Improve checking more variables
* Fix test with sizeof
* Skip following operators
* Fix test when using sizeof
* Dont check every step
* Use early returns
* Update test to use a loop instead of conditional
* Add static
* Check variables are global
* Check local variables in another scope
* Fix issue with const pointers
* Distinguish between pointer indirection and multiply
* Use simple match
* Prevent crash with uniform initialization
* Use unary op and ast to detect pointer indirection
* Expand error message when expression do not match exactly
* Add errorpath to issameexpression
* Revert "Clarify warning message for 'Same expression on both sides of operator'"
This reverts commit 0e491b41a8
2018-08-07 09:32:16 +02:00
0e491b41a8
Clarify warning message for 'Same expression on both sides of operator'
2018-08-05 10:48:02 +02:00
f9a5a114bb
astyle formatting
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[ci skip]
2018-07-25 07:44:06 +02:00
12e58c8521
fix ticket 8570: passedByValue with member initializer list and std::move ( #1316 )
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* fix ticket 8570
allow member initializer list variables that are moved to be non-const
* review feedback
* replace tabs with spaces in test code
2018-07-22 15:01:18 +02:00
5d1fdf7958
Fix issue 7904: Handle double nots in isSameExpression ( #1305 )
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* Fix issue 7904: Handle double nots in isSameExpression
* Skip checking double nots in assignments
* Use ast to check for double not
2018-07-15 11:30:02 +02:00
03faa25d12
Conditions: Better handling of function calls
2018-07-08 15:58:04 +02:00
24dd4c9c26
Restore code in checkVariableScope. Fixes false negative
2018-07-01 22:31:45 +02:00
655a8b21b6
Fix false positive 'passedByValue' when address of argument is used
2018-06-23 23:25:06 +02:00
d0614b9b36
varScope: Fix false negatives for references
2018-06-22 22:51:03 +02:00
593f7eee38
Fixed #8624 (Crash below CheckOther::checkDuplicateExpression)
2018-06-14 22:39:26 +02:00
daacf27c2e
Fix false positive from issue 8612 ( #1285 )
2018-06-10 00:05:23 +02:00
8d53bcfd63
Fix FP when using non-const members and also check return type of function ( #1283 )
2018-06-09 08:05:19 +02:00
84f0a18053
passedByReference: avoid false positives for std::pair
2018-06-08 10:19:02 +02:00
44c78d1770
passedByReference: avoid false positives for std::function
2018-06-08 08:40:14 +02:00
de09c117bf
Fixed #8618 (False positive: shared_ptr is passed by reference by intention)
2018-06-07 22:39:21 +02:00
ce50df8047
Fix override warnings. ( #1234 )
2018-05-15 16:37:40 +02:00
7ef714b0c6
Fix FP with duplicate assignments by checking if the expression is unique ( #1223 )
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* Fix FP with duplicate assignments by checking if the expression is unique
* Use array of pointers
* Reorder scope condition
2018-05-13 20:20:55 +02:00
f5dbfce8ff
Fix false positive with oppositeExpression when using binary op ( #1211 )
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* Fix false positive with oppositeExpression when using binary op
* Simplify conditional
2018-05-08 20:43:57 +02:00
cac68c6b81
Fix FP when using - as a binary operator ( #1201 )
2018-05-04 07:58:30 +02:00
f191a3e753
Improve checking of opposite expressions ( #1199 )
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* Improve checking of opposite expressions
* Fix some formatting
2018-05-02 06:32:33 +02:00
e1db4c0e2c
astyle formatting
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[ci skip]
2018-04-21 13:28:31 +02:00
d939c6015a
Report opposite expressions ( #1182 )
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* Report opposite expressions
* Skip assignment operator
2018-04-21 11:28:21 +02:00
d5fb529d4f
Fixed #8492 (Improve message: parameter should be passed by reference)
2018-04-20 17:33:42 +02:00
bbfcccf078
Refactorization: Replace several push_back-sequences by initializer lists
2018-04-09 09:41:24 +02:00
95fc84a26b
Find duplicate expressions assigned to the same variable ( #1129 )
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* Check for duplicate assignments
* Improve checking of expression
* Add more tests
* Use simple match
* Improve robustness of check
* check for null
* Reduce side effects by checking for side effects
* Improve verbose message
* Reword the error message
2018-04-08 14:43:19 +02:00
b133d50ebe
#6426 Regression now has platform dependent results
2018-04-04 16:07:07 +02:00
7581231d9d
#6426 FP duplicateExpressionTernary - (expr) ? ~0u : ~0ul. Add regression test
2018-04-04 14:31:48 +02:00
7efc4dd26e
astyle formatting
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[ci skip]
2018-04-04 10:04:40 +02:00
bce5fe5cef
Improve duplicate expressions in the ternary op by checking for equal values as well ( #1134 )
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* Improve duplicate expressions in the ternary op by checking for equal values as well
* Use value instead of expression
2018-04-03 21:43:55 +02:00
c4caee6b18
Updated copyright year
2018-01-14 15:37:52 +01:00
bbeff99cc3
Fixed #6930 (Token: need function that says if the token comes from instantiated template argument)
2018-01-11 09:41:22 +01:00
eb58df236e
CheckOther::accessMovedError() / accessMoved, accessForwarded warnings: put variable name into single quotes.
2018-01-07 10:57:19 +01:00
b802b98136
Do not warn when unique pointers are passed by value
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A unique pointer should only be passed by value or by const reference.
Passing by value means transferring ownership it makes no sense to have a pass by value Warning for unique_ptr
Signed-off-by: Andreas Pokorny <andreas.pokorny@siemens.com>
2017-07-25 11:17:56 +02:00
0967700f4b
Refactoring tests
2017-06-06 08:59:18 +02:00
ff38cc5c13
Set struct size cutoff in passedByValue check to 2*sizeof_pointer
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Struct arguments are either pushed to the stack or passed in the
registers. Since both methods operate on machine words it is logical to
tie the maximum size of a struct argument that doesn't trigger
passedByValue diagnostic to the size of the machine word.
Also guessed size of STL classes is set to 3*sizeof_pointer, this better
represents reality and ensures that structs containing them will still
trigger passedByValue.
2017-06-06 08:48:11 +02:00
28aa939d69
iwyu - include what you use
2017-05-27 04:33:47 +02:00
3817384223
FIX: test: parameter 'settings' is always rewritten
2017-05-27 04:17:18 +02:00
040d2f0012
Use simplecpp lexer in test cases
2017-05-18 21:52:31 +02:00
7fd04cd8d0
Updated Token::expressionString(), write '->' instead of '.'
2017-04-30 14:22:18 +02:00
101dc28afa
Refactoring: Moved checkMemset.. from CheckOther to CheckFunctions
2017-04-23 07:53:41 +02:00
50da7d4919
Tokenizer: Write syntax error if there is C++ code in C file.
2017-04-06 08:50:35 +02:00
3dba1b1739
Tests for git pull request #882 .
2017-03-25 15:46:25 -04:00
816106560a
More conservative check for non-commutative operator+ in isSameExpression() ( #7938 )
2017-03-15 19:17:40 +01:00
00904ba32a
Fixed false negatives in CheckOther::checkPassByReference() when assignment operator is used.
2017-03-07 21:49:28 +01:00
59c1c76a97
Fixed #7466 (Reference variable does not count side-effects (FP variableScope))
2017-03-03 19:07:00 +01:00
f80e888b7e
run astyle
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[ci-skip]
2017-01-31 16:22:31 +01:00
a012e5b5fb
( Fixed #7846 ) Syntax error when using C++11 braced-initializer in function last argument
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Add an optional extended description…
2017-01-23 12:50:36 +01:00
3022d74801
Do not suggest pass by reference for std::initializer_list
2017-01-19 11:14:55 +01:00
139071d88b
Fixed #7875 (New check: function declaration and definition argument names don't match)
2017-01-05 08:52:11 +01:00
770abcf453
Fixed #5398 (False positive: Scope of variable can be reduced does not account for other variables not reduceable)
2016-12-26 14:14:40 +01:00
df6ae9f3b4
Fixed #7847 (Can't detect shift negative values when some op is executed)
2016-12-22 09:40:19 +01:00
606bb78297
ValueFlow: Better handling of casts
2016-12-20 19:32:21 +01:00
9a871d33f7
Improve Fix #6180 ("reset" and "clear" clears the move status)
2016-12-17 16:39:30 +01:00
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
8cba02dc66
Readd test case I removed in b098d5fbd6
2016-12-11 21:24:12 +01:00
b098d5fbd6
ValueFlow: We need better handling of casts
2016-12-10 22:09:01 +01:00
2f6350a0d0
Refactorized Library
2016-12-06 14:09:28 +01:00
57b57428c2
Fix some typos in comments (found by codespell)
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Signed-off-by: Stefan Weil <sw@weilnetz.de>
2016-11-27 11:40:42 +01:00
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
c8ff96fe8f
Fixed #6180 (Usage of variable after std::move or std::forward)
2016-11-20 15:14:49 +01:00
e23dc5c1e2
Fixed wrong message shown if unused label appears directly after a switch() scope
2016-11-20 14:43:54 +01:00
919f8ac323
Fixed typos. There are no real changes.
2016-11-04 15:01:05 +01:00
0154d39bf6
Show struct member in unsignedLessThanZeroError warning
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Before:
[/tmp/test.c:8]: (style) Checking if unsigned variable '.' is less than zero.
[/tmp/test.c:12]: (style) Checking if unsigned variable '.' is less than zero.
After:
[/tmp/test.c:8]: (style) Checking if unsigned variable 'd.n' is less than zero.
[/tmp/test.c:12]: (style) Checking if unsigned variable 'd.n' is less than zero.
2016-09-22 08:03:30 +07:00
2f39ed6f88
redundantPointerOpError: put pointer name into single quotes in the error message.
2016-09-16 22:18:24 +02:00
939b42df06
Fixed #7134 (False positive redundantAssignment - assignment to local variable of unknown type)
2016-08-29 03:48:08 +02:00
bd21cd7c85
Fixed #6309 (FP: checkRedundantAssignment should not warn for pointer alias)
2016-08-08 21:43:00 +02:00
e784901303
Fixed #6971 (False positive duplicateExpressionTernary - cast ignored)
2016-08-01 21:53:43 +02:00
92e3e802fb
Attempt to fix travis build and testrunner failure
2016-07-28 20:59:09 +02:00
452ecc7ceb
Improved check: Detect passedByValue even for arguments that are not declared as "const"
2016-07-28 19:37:10 +02:00
0767284ca1
Fixed #7630 (FP: dead store, modifying array, index var modified)
2016-07-25 07:35:33 +02:00
ed4a47de45
Tokenizer: Improve syntax checking of switch,if,while
2016-07-22 16:54:24 +02:00
03d2829fb9
Merge simplecpp branch
2016-07-20 12:21:00 +02:00
0ddeac0429
refactor (use ast) and improve CheckOther::checkRedundantAssignment (warn about global variables unless they are volatile, handle arrays in lhs better)
2016-07-18 12:43:23 +02:00
d1f06ff47c
Fixed #7175 (False positive performance warning (buffer overwritten before its old content has been used))
2016-06-13 15:46:43 +02:00
710e066a9a
Fixed #6406 (VarId: struct member initialization)
2016-05-22 21:18:52 +02:00
0bf85f9aa5
ValueType: Support integers defined in libraries ( #7394 )
2016-05-04 15:39:56 +02:00
100c4276ea
Fixed #7424 (value type: wrong sign)
2016-03-18 10:30:57 +01:00
9700dfead0
Testcase succeeds on Win32-VC-32bit, only 64bit needs to be fixed.
2016-03-01 22:32:27 +01:00
b4b38fb7ce
Use ValueType in CheckOther::invalidPointerCast()
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False negative: operator new is currently not supported by ValueType.
2016-02-05 20:28:43 +01:00
cc8c498ebb
Moved a few tests to testgarbage.cpp
2016-02-04 09:10:20 +01:00
841f17776b
Set ValueType for assignment operators, detect division by zero for %= and /= again ( #7322 )
2016-02-02 17:17:55 +01:00
9d2258677d
Improved CheckOther::checkUnusedLabel(): Write a warning instead of a style message if it happens inside a switch()
2016-01-31 12:07:24 +01:00
79aec559d5
Fixed #7243 (False positive unknownEvaluationOrder - comma operator inside while-clause)
2016-01-18 16:10:51 +01:00
7b1710a44f
redundantAssignment: change from severity 'performance' to 'style' since avoiding unneccessary stores is a basic optimization done by compilers.
2016-01-15 22:01:40 +01:00
7802517a69
#7285 wrong var name: memset() called to fill 0 bytes of '&' memset with pointer: remove var name from message. Correct some entries in posix.cfg.
2016-01-12 23:20:48 +01:00
b3208fb4b3
Fixed #7211 (False positive: Finding the same expression on both sides of an operator (enumconstant == 0))
2016-01-10 11:21:43 +01:00
79e663dd6f
Settings: Remove '_' prefix for public member variables
2016-01-03 16:18:17 +01:00
996c9244d8
Update copyright year to 2007-2016.
2016-01-01 15:34:45 +02:00
bd1037e95b
Fixed #7242 (False positive unknownEvaluationOrder - comma expression in function argument)
2015-12-29 12:06:42 +01:00
25a5ac1846
Split up TestOther::testEvaluationOrder()
2015-12-28 14:04:14 +01:00
15ecb26a6c
Tokenizer: Moved simplifyAssignmentInFunctionCall from simplifyTokenList1 to simplifyTokenList2
2015-12-28 13:58:41 +01:00
0ddb5c12ce
Fixed #7238 (False positive unknownEvaluationOrder for comma operator on C code)
2015-12-28 13:45:55 +01:00
908bc664a4
Evaluation order: ignore usage in sizeof
2015-12-27 14:08:16 +01:00
c672210e06
Evaluation order: don't warn for 'dostuff(expr++, &expr)'
2015-12-26 15:48:43 +01:00
ab6809f3fa
Fixed testrunner
2015-12-25 19:01:32 +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
orbitcowboy
lordylike
amai
Matthias Krüger
Andreas Pokorny
Stas Cymbalov
Ayaz Salikhov
uburuntu
PKEuS
umanamente
Frank Zingsheim
Stefan Weil
orbitcowboy
Boris Egorov
Lauri Nurmi