d528934139
template simplifier: also remove forward declarations when removing expanded templates ( #1536 )
2018-12-20 20:55:27 +01:00
19e979315f
Correct detection of Microsoft extensions in MathLib::isValidIntegerSuffix. Remove public overloaded implementation which was not used outside mathlib.cpp. ( #1531 )
2018-12-20 12:20:31 +01:00
c31331d085
template simplifier: fix explicit instantiation with types starting with const and ending in * and &. ( #1530 )
2018-12-19 21:59:59 +01:00
e2c433a0f8
Fixed #8914 (False positive with unary_function argument)
2018-12-19 19:43:05 +01:00
378ffed37e
Address compiler warning
2018-12-19 14:39:04 +01:00
34874dd94f
Optimization: Removed unnecessary calls to simplifyPath(). The Caller should do this, and our callers (mainly the test suite) more or less do so, as they all supply just dummy paths ("test.cpp")
2018-12-18 20:33:45 +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
34330b51d1
Fix issue 8905: Condition 'a==0' is always false
...
This fixes the FP in:
```cpp
void f(const int a[]){ if (a == 0){} }
```
2018-12-18 08:16:43 +01:00
1cba78090c
Fix const anonymous struct. ( #1527 )
2018-12-18 08:15:12 +01:00
0f63874c62
Take back the whole program analysis for null pointers and uninitialized variables
2018-12-18 07:56:33 +01:00
643ddd4caa
Code cleanup
2018-12-17 18:54:32 +01:00
3b328f9187
CheckMemoryLeak: Cleanup the old memory leaks check
2018-12-17 18:12:50 +01:00
f118c22bb6
CheckUnusedVar: Cleanup checker
2018-12-17 17:48:45 +01:00
cf09fd6274
CheckUnusedVar: Code cleanup
2018-12-17 17:28:15 +01:00
fe38e256cc
Fixed #7907 (FN: redundant assignment inside switchcase, overwritten by assignment outside of switch)
2018-12-17 16:10:47 +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
025881cf35
Fix issue 8829: Condition '...' is always true (int buf[42]; if(buf != NULL){})
...
This makes arrays non-null in valueflow, so it can catch comparisons against null that is always true:
```cpp
void f(void) {
int buf[42];
if( buf != 0) {;} // << always true
}
```
2018-12-17 06:07:34 +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
2090866cd0
template simplifier: remove explicit instantiations after instantiation ( #1523 )
...
* template simplifier: remove explicit instantiations after instantiation
* Fix use after free crash in clang test suite.
2018-12-17 05:58:48 +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
3262a3bebe
Add isSameExpression to valueflow analysis
...
Check for same expressions in valueflow analysis.
2018-12-16 07:35:27 +01:00
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
1bfe98447a
FwdAnalysis: Tweak possiblyAliased
2018-12-15 11:54:00 +01:00
f26549e5ab
Fixed #8896 (Tokenizer: Anonymous struct)
2018-12-15 08:42:35 +01:00
a1c275436f
Fix #8902 (Crash in TemplateSimplifier) ( #1521 )
2018-12-15 07:52:47 +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
...
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
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
e0b64ec7a9
Fixed #8884 (AST: handle xs... template argument)
2018-12-12 19:00:14 +01:00
6924522475
Refactor methods for identification of numeric literals. ( #1514 )
2018-12-10 12:10:26 +01:00
886aa07ffb
Set version to 1.86.99/1.87 dev
2018-12-08 11:53:37 +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
5e527bdd08
Update version
2018-12-08 08:17:05 +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
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
a90c56ad76
Fixed #8880 (Regression: syntax error for valid C++ template code) ( #1509 )
2018-12-06 21:47:48 +01:00
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
88c61e8d1e
ValueFlow: Avoid FP when lambda is used
2018-12-04 18:54:26 +01:00
452318dfa4
Remove FwdAnalysis::reads: It is not finished
2018-12-04 18:46:23 +01:00
f5a94ed300
ValueFlow: Fix FP when lambda is called
2018-12-04 18:46:00 +01:00
49413b7d4c
Tokenizer: Add simplifyAt to handle some nonstandard code with @
2018-12-04 16:52:41 +01:00
7ef8f60b07
Fixed #8817 (Change wording in performance/functionStatic)
2018-12-03 18:30:54 +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
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
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
ba564076db
Fixed #7907 (FN: redundant assignment inside switchcase, overwritten by assignment outside of switch)
2018-12-02 14:04:59 +01:00
88785dda02
Refactoring the redundant assignments check
2018-12-02 11:41:27 +01:00
8087cfed5d
Fixed #8627 (Tokenizer::setVarIdPass2: constructor parameter)
2018-12-02 09:28:05 +01:00
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
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
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
2c803a1ead
Revert " #6514 Try to support hexadecimal floating numbers in MathLib::toDoubleNumber"
...
This reverts commit a73decf7e4
2018-12-01 19:01:51 +01:00
3fadefe318
Revert "Add missing include"
...
This reverts commit a2b6eaf311
2018-12-01 19:00:42 +01:00
96929c53c0
Fixed #8873 (Add syntaxError when there is no RHS for +-)
2018-12-01 17:29:41 +01:00
f42648fe22
Fixed #8114 (false positive: Address of local auto-variable assigned to a function parameter.)
2018-12-01 10:11:02 +01:00
a2b6eaf311
Add missing include
2018-12-01 01:36:04 +01:00
a73decf7e4
#6514 Try to support hexadecimal floating numbers in MathLib::toDoubleNumber
2018-12-01 00:50:26 +01:00
cad4e4ab20
Fix handling of `sizeof &var` ( #1498 )
...
Fixes https://trac.cppcheck.net/ticket/8870
2018-11-30 13:53:58 +01:00
3d024f3f6d
template simplifier: fix function forward declaration bug for constructor with initializer list. ( #1497 )
2018-11-29 06:24:28 +01:00
ff469867e7
Refactor CheckStl::stlOutOfBounds
2018-11-28 20:30:58 +01:00
dd94bfede9
CheckStl: Improving checking of container access out of bounds
2018-11-28 19:27:28 +01:00
6493db6ca2
Try to clarify message for container access out of bounds a little more.
2018-11-28 13:58:01 +01:00
0f2f807798
Improve the container out of bounds messages. They are still not perfect.
2018-11-28 07:03:56 +01:00
13c6489571
Redundant variable assignment: Fix FN for struct members
2018-11-27 18:22:22 +01:00
32c05fef92
Redundant assignment: check that --enable=style has been used.
2018-11-27 13:04:50 +01:00
0ad757fc78
valueFlowLifetime: Try to cleanup the loop a little. No functional change is intended.
2018-11-27 06:43:59 +01:00
5a6f9ac82a
Fix FP with strcmp and terminating conditions
2018-11-27 06:39:29 +01:00
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
2887ee10c0
Fixed #8800 (Possible variable assignment ignored in boolean expression)
2018-11-26 14:00:03 +01:00
affd03f1d6
Minor tweak for redundantVariableAssignment
2018-11-26 11:16:50 +01:00
e20079a5d9
template simplifier: fix 3 function forward declaration bugs ( #1493 )
...
* fix support for multi token types
* fix support for const member functions
* fix duplicate template parameters sometimes being inserted
2018-11-26 06:23:12 +01:00
86f9fb778b
Fixed #8864 (compile commands: handle define with string value)
2018-11-25 15:09:23 +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
a3921ea861
Refactor valueFlowAfterCondition
...
So this unifies the `valueFlowAfterCondition` so it re-uses more code between checking for integers and container sizes. This should make valueFlowContainer more robust.
It also extends valueflow to support container comparisons such as `if (v.size() < 3)` or `if (v.size() > 3)` using the same mechanism that is used for integers.
2018-11-24 10:07:12 +01:00
866688c70a
Rewriting redundantAssignment checker
2018-11-24 10:03:54 +01:00
b049a31e7c
Refactoring; Use visitAstNodes
2018-11-23 20:41:39 +01:00
2b09354b05
Refactoring; use visitAstNodes
2018-11-23 20:33:31 +01:00
2214ef5359
Refactor isVLAIndex
2018-11-23 20:23:20 +01:00
8f164d9602
Refactoring; use visitAstNodes
2018-11-23 19:22:53 +01:00
52f9650533
Refactoring: Use visitAstNodes
2018-11-23 19:16:19 +01:00
745b58de26
Refactoring: Use visitAstNodes
2018-11-23 17:18:07 +01:00
358f0c473d
Modify template simplifier to add forward declarations of some templa… ( #1489 )
...
* Modify template simplifier to add forward declarations of some template functions so symbol database can make sense of the expanded templates.
* Fix travis.
2018-11-23 11:36:09 +01:00
ecb3c04fba
astutils: Add function that visits nodes in AST tree
2018-11-23 06:53:43 +01:00
f16d9d7d90
Issue 6175: Check lifetime of a variables stored in containers and member variables
...
Cppcheck will now warn for all cases here:
```cpp
#include <vector>
class CCluster {};
class MyClass
{ public:
std::vector<CCluster*> m_cluster;
void createCluster()
{
CCluster cl;
CCluster* pcl=&cl;
m_cluster.push_back(pcl);
}
void createCluster2()
{
CCluster cl;
m_cluster.push_back(&cl);
}
CCluster* Cluster()
{
CCluster cl;
CCluster* pcl=&cl;
return pcl;
}
CCluster* Cluster2()
{
CCluster cl;
return &cl;
}
};
```
2018-11-21 08:43:57 +01:00
9d8e5e36eb
Added a few TODO comments
2018-11-20 22:57:01 +01:00
8227188786
comment out old memleak checking. maybe it can be removed.
2018-11-20 18:40:18 +01:00
a5af5b2d08
Revert "Fixed #7619 (False positive: Redundant assignment)"
...
There is a crash I need to look into.
2018-11-20 06:23:43 +01:00
c899792232
Fixed #7619 (False positive: Redundant assignment)
2018-11-19 21:23:36 +01:00
a8cbbe0e16
Fixed #8816 (FP shadowLocal - variable shadows a template function?)
2018-11-19 07:00:15 +01:00
9ef3c79bc6
Fixed #8851 (Crash in valueFlowContainerForward (daca@home: pbbam))
2018-11-18 20:18:55 +01:00
f2b26a488a
relative paths: another fix for {code}
2018-11-18 16:15:09 +01:00
982f7dc2b3
relative paths: show {code} properly when there are relative paths
2018-11-18 16:08:08 +01:00
7ef119cbfc
Fix FPs in lifetime checker
...
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
d376e9f245
Track variable lifetime through function calls ( #1481 )
2018-11-16 06:12:28 +01:00
5d086d60ad
Fixed #8844 (snd: Wrong varid and ast)
2018-11-14 21:05:09 +01:00
69f2e0938a
VarId: Improved varids for struct members ( #8844 )
2018-11-14 19:11:35 +01:00
39c04b650d
astyle formatting
...
[ci skip]
2018-11-14 19:10:52 +01:00
69f6100d83
Fixed #8339 (false positive: unread variable despite delete is used on it)
2018-11-14 17:04:21 +01:00
54453c5802
Fix FP when copying pointer to string ( #1479 )
2018-11-14 06:59:25 +01:00
ac242b69d6
Refactoring: Use range for loops
2018-11-14 06:58:21 +01:00
f0c86b9d14
Fix issue 8842: Crash in valueFlowTerminatingCondition on incomplete code ( #1480 )
2018-11-14 06:23:45 +01:00
e839001f3d
Fix warnings ( #1478 )
2018-11-14 06:14:04 +01:00
d97851b9db
change severity for 'unknown macro' to error for now.
2018-11-13 21:08:45 +01:00
152be6df63
Report 'unknown macro' as information message with id unknownMacro
2018-11-13 20:14:56 +01:00
a50eb56d8d
Extend 'Unknown macro' check
2018-11-13 18:30:40 +01:00
e6a5e0f752
Warn when there is a unknown macro
2018-11-13 16:49:15 +01:00
69e7392ce2
Fixed #8449 (False positive 'constStatement' when initializing std::unordered_map)
2018-11-12 18:10:34 +01:00
3d629944da
Fixed #8100 (False positive when method/function defines lambda with pointer return value)
2018-11-12 11:28:38 +01:00
f096d7f474
astyle formatting
...
[ci skip]
2018-11-12 10:08:57 +01:00
0e11bb07c8
Extend lifetime analysis to pointer usage ( #1477 )
...
* 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
717a2d370c
astyle formatting
...
[ci skip]
2018-11-12 06:32:02 +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
5bda102897
Fix warnings ( #1476 )
2018-11-12 06:08:57 +01:00
68d6b96878
Diagnose invalid lifetimes ( #1475 )
...
* 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
bdd4623124
valueFlowLibraryFunction: fix crash found with daca@home
2018-11-11 16:41:01 +01:00
3f55707b30
Fixed #8064 (Taking the address of a moved variable is not accessing it)
2018-11-11 12:47:27 +01:00
e46691597e
Fix issue 8841: FP knownConditionTrueFalse - Dont treat unknown function as noreturn ( #1474 )
...
* Fix issue 8841: Dont treat unknown function as noreturn
* Add a parameter to set default value when the function is unknown
2018-11-11 08:04:01 +01:00
ee2dfb6604
Fixed #8058 (False positive returnAddressOfAutoVariable within lambda)
2018-11-11 07:52:38 +01:00
93cde415a7
Fixed #7988 (variable in condition gets wrong varid)
2018-11-11 07:50:25 +01:00
148f257c6b
Fixed #8838 (False positive on overridden virtual function that is marked both const and final)
2018-11-10 21:57:50 +01:00
8327aab127
Fixed #8628 (Wrong AST in case)
2018-11-10 21:32:06 +01:00
d5a478d5c5
astyle formatting
...
[ci skip]
2018-11-10 21:30:01 +01:00
4cef2e94e7
Fixed #8368 (FP redundantAssignment - assignment has unknown side-effects)
2018-11-10 18:42:13 +01:00
69e6e11844
Fix a template simplifier namespace bug in #7145 ( #1473 )
...
* Fix a template simplifier namespace bug in #7145
* Refactor template simplifier to only call getTemplateDeclarations once per loop.
2018-11-10 16:41:14 +01:00
1ffcc6b730
Add initial lifetime checker ( #1448 )
...
* Inital valueflow lifetime checker
* Forward values
* Add initial tests
* Fix deplicate messages
* Fix traversing nested lambdas
* Turn test case into a todo
* Skip if returning a container
* Fix FP when using references
* Add missing header
* Fix FP from broken scopes
* Fix FP with static variable
* Add test for more FPs
* Parse lambda functions
* Check for capture by value
* Add tests for using a container and lambda together
* Fix cppcheck errors
* Add test for nextAfterAstRightmostLeaf
* Add valueflow tests
* Update error message
* Check for correct lambda token
* Improve error path reporting
* Fix hang when parsing arrays that look almlost like lambdas
2018-11-10 16:40:40 +01:00
e302e6e7a1
Fix symbol database argsMatch to skip all redundant type information (class, struct, union, enum) ( #1472 )
2018-11-09 15:54:17 +01:00
a3e717bea9
Use functions instead of comparing with enum ( #1471 )
...
* Use isComparisonOp() instead of enum
* Use isAssignmentOp() instead of enum
2018-11-09 06:30:41 +01:00
67fe99fcd9
Fix symbol database argsMatch function and its usage so qualified types are handled properly. ( #1470 )
...
* Fix symbol database argsMatch function and its usage so qualified types are handled properly.
* Remove assert.
2018-11-09 06:11:48 +01:00
36e663e250
Fix issue 8839: FP knownConditionTrueFalse - condition inside a while-clause ( #1469 )
2018-11-09 06:09:51 +01:00
17a8a4898d
Fix another template simplifier namespace bug. ( #1467 )
...
* Fix another template simplifier namespace bug.
* Add missing forward declarations caused by token bug.
2018-11-07 21:25:42 +01:00
7373be2bfa
Add a pass in valueflow for terminating conditions ( #1323 )
...
* Add valueflow for terminating conditions
* Add valueflow test
* Dont check for same expressions for now to avoid double diagnostics
* Check nesting
* Add more tests
* Ensure conditions happen in order
* Check for null
* Add error path
* Support same expression check as well
* Use early continue
* Skip checking the same token
* Avoid double condtion diagnosis
* Fix FP when in switch statements
* Fix FP when time function
* Skip conditional escapes
* Use simpleMatch
* Fix naming
* Fix typo
2018-11-07 06:49:07 +01:00
35d18be311
ValueFlow: Refactoring, removed redundant assignment
2018-11-06 07:02:20 +01:00
c966f31183
Fixed #8835 (friend class and non-empty constructor: Uninitialized members not reported) ( #1466 )
2018-11-06 06:44:08 +01:00
00340efc57
ValueFlow: Refactoring valueFlowCallFunction
2018-11-06 06:38:26 +01:00
9b67e680ae
Fix template simplifier namespace support. ( #1464 )
2018-11-05 19:55:21 +01:00
ca19894a04
ValueFlow: In evaluate handle correlated values
2018-11-05 18:07:35 +01:00
da44ce0b5d
ValueFlow: evaluate strlen and char literals better
2018-11-05 16:52:12 +01:00
IOBYTE
amai2012
Daniel Marjamäki
amai2012
PKEuS
Paul Fultz II
PKEuS
Igor
Colomban Wendling
rikardfalkeborn