774464eabb
Fix issue 8996: False positive duplicateCondition
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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
0934577dda
Library configuration: function argument direction fixes and enhancements ( #1722 )
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* std.cfg: Add further argument directions (in, out, inout).
* testlibrary.cpp: Add test for function argument direction configuration.
* std.cfg: runastyle and add some more direction configurations.
* library.h: Add documentation for function argument direction enum.
* Do not use "direction" library information for pointer arguments.
Also fix further unmatched uninitvar messages in std configuration
tests.
* std.cfg: Add more argument direction configurations.
* test/cfg/std.c: Add test for argument direction configuration.
* astutils.cpp: Only ignore pointer arguments for out/inout arguments.
* library.h: Use suggested documentation for argument direction enum.
2019-03-04 22:57:40 +01:00
9a5fcddb5d
Library configuration: Enable configuring the direction of arguments. ( #1717 )
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This enhances the library configuration so the direction of function
arguments can be specified (in, out, inout).
isVariableChangedByFunctionCall() uses this information now to avoid
guessing.
2019-03-01 15:47:08 +01:00
845c407ab7
Fixed pattern matching in isVariableChanged() to handle normal token list better
2019-03-01 13:23:03 +01:00
4f5a426fe5
Improved isVariableChangedByFunctionCall, better logic when parameter might be passed by reference
2019-02-28 17:02:46 +01:00
494dd2ba3a
Revert "Improved isVariableChangedByFunctionCall, better logic when parameter might be passed by reference"
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This reverts commit 14a0031e88
2019-02-28 15:56:25 +01:00
14a0031e88
Improved isVariableChangedByFunctionCall, better logic when parameter might be passed by reference
2019-02-28 10:26:47 +01:00
857681a049
Make quick fix for uninitialized variable false positive. Will look more at this soon.
2019-02-28 09:52:52 +01:00
941dd79f0d
Fix FP issue 8986: constArgument check warns for elements of const array ( #1683 )
2019-02-22 06:39:59 +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
8c07be136a
Fixed #8949 (False Positive: Variable 'f' is assigned a value that is never used.)
2019-01-22 21:16:27 +01:00
d50c3de740
Remove inline suppression and fix false positive.
2019-01-13 07:59:41 +01:00
2b1b8f8fe9
Fix Cppcheck warnings
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[ci skip]
2019-01-12 18:29:08 +01:00
0f9ce5edd5
Fixed #8365 (False positive on memory leak when assigned inside if statement)
2019-01-08 20:54:39 +01:00
2b63997c2c
Fixed #8928 (false positive: (style) Variable 'x' is assigned a value that is never used.)
2019-01-02 20:23:02 +01:00
236c88151f
Fixed #8926 (false positive: (style) Condition 's.x<=y' is always true)
2019-01-02 18:05:55 +01:00
115be7dfc8
ValueFlow: better FwdAnalysis for complex expressions
2019-01-01 18:23:47 +01:00
a73e989d1a
isConstVarExpression: Fix FPs when there is C++ cast
2019-01-01 11:34:44 +01:00
ed514644b8
Renamed FwdAnalysisAllPaths to FwdAnalysis
2018-12-31 18:00:47 +01:00
141ce7cd63
ValueFlow: Use FwdAnalysisAllPaths in ValueFlow to track complex expressions
2018-12-31 17:05:46 +01:00
036fcf7827
Fix warnings ( #1541 )
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* 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
6fef02498c
Fixed #7263 (False negative: redundant assignment using +=)
2018-12-27 17:27:53 +01:00
ddbe5c129c
Clarify FwdAnalysis. It is useful for checks that need data flow analysis of ALL paths.
2018-12-25 11:56:06 +01:00
e2c433a0f8
Fixed #8914 (False positive with unary_function argument)
2018-12-19 19:43:05 +01:00
bf4e850e11
Fixed #4475 (New check: struct member is assigned a value that is not read)
2018-12-17 15:40:15 +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
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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
c8d688607a
Fixed #8901 (Unused value: const variable initialization)
2018-12-16 19:01:05 +01:00
21eb1c5e22
FwdAnalysis: Fix false negatives for struct members
2018-12-16 18:32:34 +01:00
46a0172480
FwdAnalysis: fix FP in loop
2018-12-16 16:43:04 +01:00
97d2075007
FwdAnalysis: better handling of loops
2018-12-16 11:42:11 +01:00
3af0d73f82
Unused value: Fixed false negatives for loops
2018-12-16 11:18:37 +01:00
1bfe98447a
FwdAnalysis: Tweak possiblyAliased
2018-12-15 11:54:00 +01:00
37416010ef
Unused value: Fix false positive (ast, {})
2018-12-14 18:56:09 +01:00
be6782d386
Fix FP 8891: Incorrect return scope when using uniform initialization
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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
8464085535
UnusedVariables: Fix FP for unknown variable
2018-12-13 21:37:21 +01:00
092d434f91
UnusedVar: Fix FP for array arguments
2018-12-13 21:08:18 +01:00
1f27cd56c0
FwdAnalysis; Code cleanup, isNullOperand
2018-12-13 21:01:33 +01:00
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
452318dfa4
Remove FwdAnalysis::reads: It is not finished
2018-12-04 18:46:23 +01:00
c03c262058
Preparing FwdAnalysis for ValueFlow usage where we want to fetch read locations
2018-12-02 18:29:16 +01:00
d8fada6702
Refactoring FwdAnalysis
2018-12-02 17:42:18 +01:00
6734571f06
Refactoring: Create FwdAnalysis class in astutils
2018-12-02 17:01:52 +01:00
ecb3c04fba
astutils: Add function that visits nodes in AST tree
2018-11-23 06:53:43 +01:00
7ef119cbfc
Fix FPs in lifetime checker
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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
54453c5802
Fix FP when copying pointer to string ( #1479 )
2018-11-14 06:59:25 +01:00
0e11bb07c8
Extend lifetime analysis to pointer usage ( #1477 )
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* 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
68d6b96878
Diagnose invalid lifetimes ( #1475 )
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* 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
d5a478d5c5
astyle formatting
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[ci skip]
2018-11-10 21:30:01 +01:00
Paul Fultz II
Sebastian
Daniel Marjamäki
rikardfalkeborn