Daniel Marjamäki
2b0e4926bc
valueFlowAfterAssign: variable initialization
2020-06-14 21:14:05 +02:00
Paul Fultz II
0c659a1499
Fix incorrect logic for condition ( #2675 )
2020-06-09 08:16:53 +02:00
Daniel Marjamäki
6d796b434e
Fixed #9731 (ValueFlow: does not handle many assignments well)
2020-06-08 21:17:12 +02:00
Paul Fultz II
eed2e829a7
Revert "Cleanup: Removed Tokenizer::simplifyTokenList2. As a side-effect, rules for "simple" token list are now executed on normal token list." ( #2666 )
...
This reverts commit 187cde183d
.
2020-05-30 11:23:22 +02:00
PKEuS
187cde183d
Cleanup: Removed Tokenizer::simplifyTokenList2. As a side-effect, rules for "simple" token list are now executed on normal token list.
2020-05-29 21:21:07 +02:00
Daniel Marjamäki
d64631219b
Fixed #9741 (Wrong value for sizeof)
2020-05-28 21:24:48 +02:00
Oliver Stöneberg
4f68d85633
optimized non-matchcompiled Token::simpleMatch() a bit ( #2640 )
2020-05-26 20:13:56 +02:00
Paul Fultz II
526abd4b52
Fix issue 9738: ValueFlow: handle std::tie better ( #2657 )
2020-05-22 22:57:20 +02:00
Paul Fultz II
8301fa8244
Fix issue 8144: valueFlowBeforeCondition: struct ( #2645 )
2020-05-21 08:47:48 +02:00
orbitcowboy
9861a5291e
Formatted the code, there are no functional changes [ci skip]
2020-05-20 23:45:00 +02:00
PKEuS
fb1afe2345
Fixed test suite: Do no longer apply simplifyTokenList2 to token lists, except for those tests that test those simplifications, because checks are no longer run on that simplified token list
...
Changed failing unit test to TODO tests, as they indicate patterns we do no longer understand properly.
2020-05-20 18:54:16 +02:00
PKEuS
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
PKEuS
793ed68029
Refactorization: Moved code from header to source
...
- from utils.h to new utils.cpp
- from token.h to token.cpp
- from valueflow.h to valueflow.cpp
- from errorlogger.h to errorlogger.cpp
2020-05-19 08:35:12 +02:00
Daniel Marjamäki
08ddd84780
Update copyright year
2020-05-10 11:16:32 +02:00
Daniel Marjamäki
3e0218299b
Revert "Update copyright year"
...
This reverts commit 6eec6c4bd5
.
2020-05-10 11:13:05 +02:00
Daniel Marjamäki
6eec6c4bd5
Update copyright year
2020-05-10 11:11:34 +02:00
Paul Fultz II
2a09465a07
Fix issue 9686: Regression: ValueFlow should handle try/catch better ( #2618 )
2020-04-22 19:20:03 +02:00
Oliver Stöneberg
1af959af2c
fixed -Wextra-semi-stmt Clang warnings ( #2553 )
...
* fixed -Wextra-semi-stmt Clang warnings
* adjusted REDIRECT macro to require a semicolon
* testmathlib.cpp: rolled back accidental change
2020-04-21 17:27:51 +02:00
Daniel Marjamäki
e8bbfdbfee
Fixed #9559 (Multiple checks to std::atomic are not redundant)
2020-04-19 17:29:40 +02:00
Paul Fultz II
e2efb338b6
Fix issue 9678: False positive: generic valueflow forward analysis ( #2611 )
2020-04-19 08:28:07 +02:00
Paul Fultz II
8b27f1c216
Fix issue 9667: crash: crash in valueflow for weird code where label address is returned ( #2602 )
2020-04-11 13:56:53 +02:00
Paul Fultz II
6cc58e1086
Set a max for the combination of arguments that can be passsed through valueFlowSubFunction ( #2579 )
...
* Set a max for the combination of arguments that can be passsed
* Skip mismatch path ids when computing the cross product
2020-04-01 22:33:09 +02:00
Paul Fultz II
b68d6f9471
Fix crash in valueflow when using local classes ( #2575 )
2020-03-22 10:12:53 +01:00
Paul Fultz II
7fd3580f21
Dont traverse conditions multiple times ( #2574 )
2020-03-20 10:37:16 +01:00
Paul Fultz II
f2527f5340
Fix crash in valueFlowForLoopSimplifyAfter ( #2573 )
2020-03-20 07:16:05 +01:00
Rikard Falkeborn
f6e7fb4bd9
Bugfix valuetype for some integer constants ( #2545 )
2020-02-19 07:51:39 +01:00
Paul Fultz II
921887a281
Use valueFlowGeneric for valueFlowForwardExpression ( #2537 )
2020-02-16 16:02:22 +01:00
Paul Fultz II
61d847cac2
Fix issue 9637: false positive: Condition 'i<2U' is always true ( #2536 )
2020-02-15 07:57:43 +01:00
Paul Fultz II
7368a54629
Add generic valueflow forward analysis ( #2511 )
2020-02-13 16:27:06 +01:00
Daniel Marjamäki
3ec03b8915
Fixed #9571 (False positive: containerSize)
2020-02-12 18:53:36 +01:00
Rikard Falkeborn
0bb98aeef9
Fix 9577 (endless recursion in Valueflow::bifurcate()) ( #2492 )
...
Ensure bifurcate() does not recurse endlessly where a variable is
initialized recursively, or a variable is initialized as x(0) or x{0}
followed by a recursive assignment (for example int x(0); x = x / 1;).
The first case is solved by bailing out if there initialization is done
using x(0) or x{0}, the second by adding a missing depth argument to a
recursive call.
2020-01-17 03:17:26 +01:00
Paul Fultz II
90f82d0374
Fix issue 9541: false negative: knownConditionTrueFalse ( #2473 )
...
* Fix issue 9541: false negative: knownConditionTrueFalse
* Add another test case
* Add another test
* Fix FPs
* Format
* Fix compile error
* Remove double conditions
* Fix compile error
2020-01-05 16:25:33 +01:00
Paul Fultz II
75de485c4d
Fix issue 9551: Out-of-bounds in getLifetimeTokens() ( #2461 )
2019-12-29 08:23:58 +01:00
Daniel Marjamäki
fe23d017f3
Fixed #8419 (False positive accessMoved on int)
2019-12-21 07:39:14 +01:00
Daniel Marjamäki
33ec78fe6e
Fixed #9036 (false positive: (style) Condition 's.x<127U' is always true)
2019-12-20 19:06:35 +01:00
Daniel Marjamäki
a241be0ecc
Fixed #9434 (False positive: Out of bounds access when using const pointer)
2019-12-15 20:10:28 +01:00
Daniel Marjamäki
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
Sebastian
95e0b0d0f9
Fix #9510 : Crash in valueflow.cpp solveExprValues() (division by zero) ( #2420 )
...
`break` if divider `intval` is 0 to avoid division by 0 as suggested by @pfultz2
Trac ticket: https://trac.cppcheck.net/ticket/9510
2019-12-06 08:08:40 +01:00
Paul Fultz II
f9d33c07f8
Fix issue 9458: Crash with shadow variables in a lambda ( #2406 )
...
* Fix issue 9458: Crash with shadow variables in a lambda
* Format
2019-11-29 09:45:02 +01:00
Rikard Falkeborn
11319a397a
ValueFlow: Add test with hexadecimal floating point literal ( #2342 )
2019-11-10 08:27:55 +01:00
Rikard Falkeborn
f83eb127ae
ValueFlow: sizeof string and char literals ( #2285 )
2019-10-20 21:02:28 +02:00
Daniel Marjamäki
e50b9e2bef
Fixed #8784 (False positive uninitialized variable)
2019-10-20 15:20:05 +02:00
Daniel Marjamäki
9a2b71494f
ValueFlow: Set value for ::
2019-10-19 21:08:59 +02:00
Daniel Marjamäki
e0093c99ce
Fixed #9276 (False positive: ValueFlow does not handle return in switch properly.)
2019-10-18 16:16:56 +02:00
Daniel Marjamäki
3a0a0fdefb
Fixed #9424 (False positive: known condition after function call)
2019-10-18 08:21:07 +02:00
Ken-Patrick Lehrmann
24211cf8b9
Fix crashes in valueflow ( #2236 )
...
* Fix crashes in valueflow
http://cppcheck1.osuosl.org:8000/crash.html
For instance in http://cppcheck1.osuosl.org:8000/styx
```
==19651==ERROR: AddressSanitizer: SEGV on unknown address 0x00000000001c (pc 0x556f21abc3df bp 0x7ffc140d2720 sp 0x7ffc140d2710 T0)
==19651==The signal is caused by a READ memory access.
==19651==Hint: address points to the zero page.
#0 0x556f21abc3de in Variable::isGlobal() const ../lib/symboldatabase.h:342
#1 0x556f221f801a in valueFlowForwardVariable ../lib/valueflow.cpp:2471
#2 0x556f22208130 in valueFlowForward ../lib/valueflow.cpp:3204
#3 0x556f221e9e14 in valueFlowReverse ../lib/valueflow.cpp:1892
#4 0x556f221f1a43 in valueFlowBeforeCondition ../lib/valueflow.cpp:2200
#5 0x556f2223dbb5 in ValueFlow::setValues(TokenList*, SymbolDatabase*, ErrorLogger*, Settings const*) ../lib/valueflow.cpp:6521
#6 0x556f220e5991 in Tokenizer::simplifyTokens1(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&) ../lib/tokenize.cpp:2342
#7 0x556f21d8d066 in CppCheck::checkFile(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, std::istream&) ../lib/cppcheck.cpp:508
#8 0x556f21d84cd3 in CppCheck::check(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&) ../lib/cppcheck.cpp:192
#9 0x556f21a28796 in CppCheckExecutor::check_internal(CppCheck&, int, char const* const*) ../cli/cppcheckexecutor.cpp:884
#10 0x556f21a24be8 in CppCheckExecutor::check(int, char const* const*) ../cli/cppcheckexecutor.cpp:198
#11 0x556f22313063 in main ../cli/main.cpp:95
```
* Add test case for crash in valueflow
2019-10-16 20:54:07 +02:00
Daniel Marjamäki
887825d834
astyle formatting
...
[ci skip]
2019-10-05 15:42:47 +02:00
Paul Fultz II
997803869d
Forward values after assignment in valueFlowReverse ( #2226 )
...
* Forward values after assignment in valueFlowReverse
* Rename variables
* Format
2019-10-03 09:58:57 +02:00
Daniel Marjamäki
b55c587ab2
astyle formatting
...
[ci skip]
2019-09-26 10:32:49 +02:00
Paul Fultz II
597d0fa35b
Support expression in valueFlowAfterCondition ( #2219 )
...
* Add valueFlowForwardExpression function to forward values of an expression
* Use token for expression
* Fix name in bailout message
* Handle expressions
* Add more tests for more expressions
* Add more tests
* Solve the expression if possible
* Formatting
2019-09-26 10:32:25 +02:00
Daniel Marjamäki
049f6475ee
astyle formatting
...
[ci skip]
2019-09-20 15:07:27 +02:00
Paul Fultz II
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
Paul Fultz II
27ebff7ae4
Add deeper analysis of when a function changes a containers size ( #2149 )
...
* Add deeper analysis of when a function changes a containers size
* Fix issues
* Track addressOf
2019-09-06 21:18:45 +02:00
Paul Fultz II
3aef0c9bd3
Fix issue 8715: regression uninitvar not detected ( #2092 )
2019-08-16 07:48:54 +02:00
Paul Fultz II
68e8253920
Fix issue 8313 and 7326: Track values of pointer aliases in valueflow
2019-08-12 12:58:53 +02:00
Paul Fultz II
9aa97cbb95
Fix issue 8296: ValueFlow: value not set in conditional scope in subfunction ( #2071 )
...
* Fix issue 8296: ValueFlow: value not set in conditional scope in subfunction
* Refactor condition checkingg
* Make test case TODO
2019-08-11 15:39:37 +02:00
Paul Fultz II
bd02ca5ccb
Fix issue 9207: Not detected 'always true' and unreachable code
2019-08-08 07:46:47 +02:00
Paul Fultz II
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
Paul Fultz II
ffdd2dc793
Fix issue 8924: Re-enable valueFlowTerminatingCondition
2019-08-05 07:18:06 +02:00
Daniel Marjamäki
ce53931d00
Fixed #9251 (False positive: unininitialized variable (multi variables))
2019-08-03 21:12:34 +02:00
Daniel Marjamäki
607b3daca8
ValueFlow: Improve bailout for structs etc in loops
2019-07-29 15:51:48 +02:00
Daniel Marjamäki
e8ec6e6f11
Fixed #8349 (Noisy nullPointerRedundantCheck)
2019-07-27 20:03:06 +02:00
Daniel Marjamäki
bbcffce529
Fixed #9062 (False positive "condition is always true")
2019-07-24 19:16:35 +02:00
Daniel Marjamäki
2da75d5af4
Split up Cppcheck attribute. low and high values can be specified separately and they can be used for variables also.
2019-07-24 15:08:26 +02:00
Daniel Marjamäki
cab9f61b79
safe checks: Handle float parameters
2019-07-24 12:09:13 +02:00
Daniel Marjamäki
10be2a1941
Safe checks: container parameters
2019-07-24 11:39:35 +02:00
Daniel Marjamäki
8959c5a9d0
Rename valueFlowAllFunctionParameterValues => valueFlowSafeFunctionParameterValues
2019-07-24 10:57:35 +02:00
Daniel Marjamäki
c8bc88e7e2
Fix compiler error
2019-07-23 13:14:08 +02:00
Daniel Marjamäki
f9bd589abb
testrunner: Make a few tests more 'proper'
2019-07-13 07:29:23 +02:00
Daniel Marjamäki
8ad3e43f92
Add handling of a simple C++ contract
2019-07-12 16:05:35 +02:00
Daniel Marjamäki
68cc7516a1
Annotations: Add annotation __cppcheck_in_range__(low,high)
2019-07-12 11:09:54 +02:00
Daniel Marjamäki
783f7f1648
Rename safeValues to unknownValues
2019-07-11 16:05:48 +02:00
Daniel Marjamäki
05d35b063d
Function return: Extra check of safe function return values
2019-07-10 20:00:21 +02:00
Daniel Marjamäki
c9906125de
Safe functions: Check more possible function argument values
2019-07-10 16:59:05 +02:00
Daniel Marjamäki
9f548efbd3
Refactoring: enum class
2019-07-10 15:27:07 +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
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
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
Rikard Falkeborn
b1c8d81bcc
Refactoring; Use range for loop ( #1900 )
2019-06-17 13:17:45 +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
orbitcowboy
55df395a4e
Running astyle [ci skip]
2019-05-30 14:41:14 +02:00
Ken-Patrick
3cdc236e10
Fix false positive with several ! (not) operators ( #1856 )
...
With the following code
int f(int x, int y) {
if (!!(x != 0)) {
return y/x;
}
cppcheck would wrongly warn that there might be a division by zero in
"return y/x;".
2019-05-29 09:45:15 +02:00
Paul Fultz II
4e94c64da8
Fix issue 9099 and 9102: Incorrect valueflow for global variables ( #1832 )
2019-05-14 08:58:27 +02:00
Daniel Marjamäki
6c3c090403
Fixed #6317 (wrong simplification: int i = 1.5; return i; get simplified to: return 1.5;)
2019-05-01 17:05:16 +02:00
Rikard Falkeborn
1cc5f3abe7
Set wchar_t type ( #1807 )
...
This is necessary for valueflow to know the size, for example when
calculating sizeof(wchar_t).
2019-05-01 16:34:28 +02:00
Daniel Marjamäki
66064fb2bb
Disable valueFlowGlobalConstVar until #9099 is fixed
2019-04-30 20:51:59 +02:00
Gary Leutheuser
bca2dfb3f4
Implement #7597 - valueflow: global constant ( #1802 )
...
* Implement const global value flow
* Tabs to spaces
2019-04-21 06:54:32 +02:00
Daniel Marjamäki
703e0a0153
Appveyor: Try to #include proper header for std::uint16_t
2019-03-13 21:44:26 +01:00
Daniel Marjamäki
1ca6d9c847
Appveyor: Fix missing #include for uint16_t
2019-03-13 19:01:54 +01:00
Daniel Marjamäki
b984897526
ValueFlow: Fix sizeof for array of library type
2019-03-13 18:31:41 +01:00
Daniel Marjamäki
11e32ff445
ValueFlow: Handle compound assignments in execute()
2019-03-12 18:53:58 +01:00
Daniel Marjamäki
7b17b33a49
ValueFlow: fix handling of sizeof(*p)
2019-03-11 20:32:24 +01:00
orbitcowboy
a5ac9fcac5
Running astyle [ci skip].
2019-03-01 15:05:53 +01:00
Daniel Marjamäki
845c407ab7
Fixed pattern matching in isVariableChanged() to handle normal token list better
2019-03-01 13:23:03 +01:00
Daniel Marjamäki
5563fef7bb
Fixed #9008 (new crash in clang test suite)
2019-02-28 20:34:07 +01:00
Daniel Marjamäki
857681a049
Make quick fix for uninitialized variable false positive. Will look more at this soon.
2019-02-28 09:52:52 +01:00
Paul Fultz II
507c7a4388
Improvement to lifetime tracking of addressof and derefencing
...
This will now warn for cases like this:
```cpp
auto& f() {
std::vector<int> x;
return x[0];
}
```
It also improves the handling of address of operator, so it can now warn across some function calls, like this:
```cpp
int& f(int& a) {
return a;
}
int* hello() {
int x = 0;
return &f(x);
}
```
2019-02-22 06:38:56 +01:00
Daniel Marjamäki
bd7790fd8c
Update copyright year
2019-02-09 07:24:06 +01:00
Daniel Marjamäki
ae001d4336
Fixed #8957 (Tokenizer::setVarId: varid not set when lambda function is used)
2019-02-03 08:57:04 +01:00
amai2012
738fef6c27
Run astyle
2019-01-12 21:51:39 +01:00
Daniel Marjamäki
5276fd68b2
Remove unused test functions
...
[ci skip]
2019-01-12 18:32:18 +01:00
Daniel Marjamäki
8dd641b8be
Use OVERRIDE in test
2019-01-12 15:45:25 +01:00
Daniel Marjamäki
5636497c0b
Fixed #8863 (false positive: (warning) Accessing an item in container 's'. Either the condition 's.empty()' is redundant or 's' can be empty.)
2019-01-06 12:21:55 +01:00
Paul Fultz II
bba6dfb8b2
Fix issue 4744: ValueFlow: known integer result
...
This fixes valueflow to have a value for `||` operator here:
```cpp
bool f()
{
bool a = (4 == 3); // <-- 0
bool b = (3 == 3); // <-- 1
return a || b; // <-- 1
}
```
2019-01-03 07:05:31 +01:00
Daniel Marjamäki
39a96a5a16
ValueFlow: Temporarily comment out valueFlowTerminatingCondition
2019-01-02 19:42:08 +01:00
Daniel Marjamäki
236c88151f
Fixed #8926 (false positive: (style) Condition 's.x<=y' is always true)
2019-01-02 18:05:55 +01:00
Daniel Marjamäki
115be7dfc8
ValueFlow: better FwdAnalysis for complex expressions
2019-01-01 18:23:47 +01:00
Daniel Marjamäki
be7afac875
ValueFlow: remove handling of == for complex expressions it did not work properly
2019-01-01 17:23:46 +01:00
rikardfalkeborn
13ffefc8b8
Valueflow: Fix right shift with more than 31 bits ( #1553 )
...
When comparing if the shift is large enough to make the result zero, use
an unsigned long long to make sure the result fits. Also, a check that
avoids setting the value if the shift is equal to or larger than the
number of bits in the operand (this is undefined behaviour). Finally,
add a check to make sure the calculated value is not too large to store.
Add test cases to cover this.
This was detected by an MSVC warning.
valueflow.cpp(1350): warning C4334: '<<' : result of 32-bit shift implicitly
converted to 64 bits (was 64-bit shift intended?)
2019-01-01 14:15:50 +01:00
Daniel Marjamäki
4918a18bfb
ValueFlow: Value of expression after condition
2018-12-31 17:37:38 +01:00
Daniel Marjamäki
141ce7cd63
ValueFlow: Use FwdAnalysisAllPaths in ValueFlow to track complex expressions
2018-12-31 17:05:46 +01:00
Daniel Marjamäki
a40fe3c67f
Fixed #7872 (ValueFlow: static_cast)
2018-12-27 21:33:01 +01:00
Daniel Marjamäki
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
Paul Fultz II
3262a3bebe
Add isSameExpression to valueflow analysis
...
Check for same expressions in valueflow analysis.
2018-12-16 07:35:27 +01:00
Daniel Marjamäki
88c61e8d1e
ValueFlow: Avoid FP when lambda is used
2018-12-04 18:54:26 +01:00
Daniel Marjamäki
f5a94ed300
ValueFlow: Fix FP when lambda is called
2018-12-04 18:46:00 +01:00
Igor
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
Daniel Marjamäki
2887ee10c0
Fixed #8800 (Possible variable assignment ignored in boolean expression)
2018-11-26 14:00:03 +01:00
Paul Fultz II
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
Daniel Marjamäki
d5a478d5c5
astyle formatting
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[ci skip]
2018-11-10 21:30:01 +01:00
Paul Fultz II
1ffcc6b730
Add initial lifetime checker ( #1448 )
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* 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
Paul Fultz II
7373be2bfa
Add a pass in valueflow for terminating conditions ( #1323 )
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* 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
Daniel Marjamäki
00340efc57
ValueFlow: Refactoring valueFlowCallFunction
2018-11-06 06:38:26 +01:00
Daniel Marjamäki
ca19894a04
ValueFlow: In evaluate handle correlated values
2018-11-05 18:07:35 +01:00
Daniel Marjamäki
8a54420274
ValueFlow: Try to handle multiple argument values in <returnValue> evaluation
2018-11-04 20:52:12 +01:00
Daniel Marjamäki
6878de2c5e
ValueFlow: getExpressionRange, valueFlowRightShift
2018-11-03 23:25:46 +01:00
Daniel Marjamäki
5de683ec49
Container size: Fix false positive
2018-11-02 20:10:40 +01:00
Daniel Marjamäki
16cc20a232
ValueFlow: Better handling of container size values
2018-11-02 18:28:32 +01:00
Daniel Marjamäki
c03d32b429
ValueFlow: Improve containerSize handling of string like classes
2018-10-28 19:14:00 +01:00
Daniel Marjamäki
06ede9c239
ValueFlow: handle x+=y for containers
2018-10-27 18:38:04 +02:00
Daniel Marjamäki
d7de46f50e
ValueFlow: Fix false positive for container size
2018-09-08 10:43:08 +02:00
Daniel Marjamäki
c6d43506b6
ValueFlow: Fix FP in switch
2018-09-04 20:28:48 +02:00
Daniel Marjamäki
cc402869a6
Fixed #8689 (False positive: containerOutOfBounds after function call)
2018-09-02 14:08:34 +02:00
Daniel Marjamäki
6223204a06
Fixed #8708 (FP: Accessing an item in container that is empty)
2018-08-27 13:49:47 +02:00
Paul Fultz II
fc135e1087
Check if member function modifies the variable ( #1350 )
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* Check if member function modifies the variable
* Check for const pointer
* Add test for const condition
* Add more null checking
* Add todo assert for FN
2018-08-27 11:09:09 +02:00
Daniel Marjamäki
866d198756
Fixed #8697 (noreturn output stream)
2018-08-21 06:32:33 +02:00
Daniel Marjamäki
2f834c3c3b
Fixed #8688 (False positive: containerOutOfBounds)
2018-08-13 21:27:29 +02:00
Daniel Marjamäki
55ab842083
valueFlowSizeForward: Bailout when function calls modify the container size
2018-08-13 06:54:18 +02:00
Daniel Marjamäki
183345a939
valueFlowContainerSize: Fix FP when container size is changed
2018-08-12 22:23:19 +02:00
Daniel Marjamäki
7074eeb869
valueFlowContainerSize: assignment of string-like containers
2018-08-12 22:01:58 +02:00
Daniel Marjamäki
189ea5003a
valueFlowContainerSize: empty container variables
2018-08-12 14:41:00 +02:00
Daniel Marjamäki
811a71aa06
valueFlowContainerSize: Handle guard logic
2018-08-11 15:08:54 +02:00
Daniel Marjamäki
6008bbdfb4
valueFlowContainerSize: Fix wrong value after condition if conditional code escapes
2018-08-11 13:49:42 +02:00
Daniel Marjamäki
10461e5429
valueFlowContainerSize: forward analysis inside conditional code
2018-08-10 22:18:38 +02:00
Daniel Marjamäki
4a502a7f6b
valueFlowContainerSize: add simple forward analysis
2018-08-10 22:06:23 +02:00
Daniel Marjamäki
2b10e38eec
valueFlowContainerSize: handling of 'v.size() == 10'
2018-08-10 21:43:47 +02:00
Paul Fultz II
3947c23290
Fix issue 8369: False negative: Condition 'condition' is always true ( #1325 )
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* Fix issue 8369: False negative: Condition 'condition' is always true
* Use simpleMatch
* Add iterator header
* Cleanup
* Remove unused variable
2018-08-10 18:05:23 +02:00
Daniel Marjamäki
907f81d059
ValueFlow: Improved analysis of container size
2018-08-10 11:53:56 +02:00
Daniel Marjamäki
81f54f7094
Fixed #8681 (ValueFlow: Container size)
2018-08-10 11:29:16 +02:00
Daniel Marjamäki
c666f74755
astyle formatting
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[ci skip]
2018-07-25 23:02:16 +02:00
Paul Fultz II
f093692551
ValueFlow: Set values in else branch even when the first branch modifies the value ( #1309 )
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* Set values in else branch even when the first branch modifies the value
* Move tests
* Add check for goto
* Remvoe todo
* Also check scope is noreturn
* Use isEscapeScope when variables are changed
2018-07-25 22:59:54 +02:00
Daniel Marjamäki
f9a5a114bb
astyle formatting
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[ci skip]
2018-07-25 07:44:06 +02:00
Paul Fultz II
9895ea5ff2
Fix issue 470: Condition is always true or false on logical operators ( #1294 )
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* Fix issue 470: Condition is always true or false on logical operators
* Dont warn on literals
* Compute logical operators using valueflow
* Fix FP when using literals
* Always warn on subconditions that are always true
* Use percent matches first
* Add test for logical operators
* Check if parent is null
2018-07-23 08:51:59 +02:00
IOBYTE
ce50df8047
Fix override warnings. ( #1234 )
2018-05-15 16:37:40 +02:00
Paul Fultz II
0561877182
Fix false positive with negative array index in issue 8536 ( #1202 )
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* Fix FP with negative array index in valueflow
* Remove values when valueflow fails
* Add valueflow test
2018-05-06 08:35:29 +02:00
Daniel Marjamäki
c84628c28a
Fixed #8494 (False positive: serialization class overloads operator)
2018-04-17 14:23:04 +02:00
Paul Fultz II
d8b3fa5c70
Fix #8482 : Regression with valueflow ( #1159 )
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* Fix regression with valueflow
* Simplify test case
2018-04-09 16:13:17 +02:00
PKEuS
bbfcccf078
Refactorization: Replace several push_back-sequences by initializer lists
2018-04-09 09:41:24 +02:00
Paul Fultz II
aed84abfd5
Extend valueflow comparison ops ( #1153 )
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* Handle else clause when doing a compare
* Break early
* Fix bug in checking no return else
* Escape quotes
* Add equal sign
* Simplify the logic
2018-04-08 09:24:01 +02:00
Paul Fultz II
b871c85b67
Improve valeflow analysis with comparison operators ( #1131 )
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* Improve valeflow analysis with comparison operators
* Use simple match
* Dont add 0 on comparisons
* Check reverse comparisons
* Use nullptr
* Remove duplicate code tests
2018-04-05 06:51:31 +02:00
IOBYTE
5bc039b7da
Fix #6367 and #8439 (improve sizeof value flow support) ( #1132 )
2018-03-23 08:28:12 +01:00
Daniel Marjamäki
7699f6432b
Fixed #8288 (valueFlowGlobalVar: compound assignments)
2018-03-18 19:53:33 +01:00
Daniel Marjamäki
ec6133aea2
Fixed #8182 (False positive uninitvar - variable initialized in function in ternary expression)
2018-03-16 19:13:48 +01:00
Daniel Marjamäki
7701e4594a
ValueFlowBeforeCondition: Fix wrong value in do-while condition when there is a break in the loop body
2018-02-24 22:07:34 +01:00
Daniel Marjamäki
e62b9bdc77
Fixed #8348 (ValueFlow: wrong Uninit value with abort() in else-branch)
2018-02-11 22:14:44 +01:00
Daniel Marjamäki
c4caee6b18
Updated copyright year
2018-01-14 15:37:52 +01:00
Daniel Marjamäki
1b13490ac1
Move code
2018-01-11 14:27:41 +01:00
Daniel Marjamäki
6fd157e93b
ValueFlow: Template arguments have 'possible' values
2018-01-11 14:22:27 +01:00
Daniel Marjamäki
9191e6f112
Fixed #8246 (ValueFlow: known value, function pointer argument)
2017-11-17 23:04:54 +01:00
Daniel Marjamäki
4a9984d73b
Fixed #8233 (FP uninitvar found in bash:lib/readline/display.c)
2017-11-06 10:28:07 +01:00
Daniel Marjamäki
1d5e3e4f0c
Fixed #8247 (False positive knownConditionTrueFalse)
2017-10-20 17:31:58 +02:00
Daniel Marjamäki
ad1749738e
Fixed #6153 (ValueFlowBeforeCondition: Handle global variables)
2017-10-17 16:55:37 +02:00
Daniel Marjamäki
6d59290858
Fixed #10 (ValueFlow: condition variable has known value in switch case)
2017-10-16 21:51:30 +02:00
Dmitry-Me
2a6f63d995
Resolve C4305 - double constant truncated to float
2017-10-11 23:36:51 +03:00
Daniel Marjamäki
2a6fbe2e3c
astyle formatting
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[ci skip]
2017-10-05 23:01:42 +02:00
hexcoder
051a18b120
pull request for ticket 8180 (better diagnostic output for bailouts) ( #964 )
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* sync build instructions from readme.txt
* refactored the patch from ticket 8180. Moved logic from macros to the bailoutInternal function
* adapt to new bailout message format
* adapt to new bailout message format
* adapt to new bailout message format
* compile fix for Microsoft platform
* remove directory part from file locations in bailout message (normalize)
* remove directory part from valueflow message filter
* adapt tests to file format without directory part
* adapt tests to file format without directory part
* new line number agnostic assert_equals methods
* new line number agnostic assert_equals methods
* adapt to new method assertEqualsWithoutLineNumbers()
* adapt to new method assertEqualsWithoutLineNumbers()
* Bugfix: do not replace line number with spaces, remove it
* review changes: const char * -> std::string, size_t -> int, std::to_string() -> MathLib::toString()
* set #line at the beginning to guard against insertions from match compiler
* Bugfix: counting lines can be difficult :-) #line 1 -> #line 2
* added method stripDirectoryPart()
* added method stripDirectoryPart()
* used new method Path::stripDirectoryPart()
* new dependency path.h in lib/valueFlow.cpp
* code cleanup, removing redundant temporary objects and casts
2017-10-05 23:03:13 +02:00
Daniel Marjamäki
5f4b06c0f4
isVariableChangedByFunctionCall: Fix FN when constructor argument is const reference
2017-09-20 14:03:56 +02:00
Daniel Marjamäki
4318521fc1
Fixed #8187 (isVariableChangedByFunctionCall: Constructor reference argument)
2017-09-20 12:53:25 +02:00
Daniel Marjamäki
1dbcba4dd6
Fixed #8221 (ValueFlow: value for static variable that is not written)
2017-09-15 15:58:19 +02:00
Daniel Marjamäki
ef1f3fbee6
Fixed #8173 (ValueFlow: use AST when setting values in assignment RHS ((n=42) && n=='A'))
2017-09-14 22:49:47 +02:00
Daniel Marjamäki
a02fd54a69
ValueFlow: Avoid FPs for aliased variables
2017-09-03 23:24:55 +02:00
Daniel Marjamäki
30f04a5a96
Fixed #8195 (False positive uninitvar (regression) - valueflow misses variable initialization via istringstream >>)
2017-09-02 21:53:51 +02:00
Daniel Marjamäki
9c99bc43c2
ValueFlow: Skip wrong handling of lambda functions. TODO: handle lambda functions properly.
2017-08-28 22:39:12 +02:00
Daniel Marjamäki
02a1b7cd2d
Fixed #7965 (valueFlowForward: Improved handling of correlated variables)
2017-08-27 19:50:44 +02:00
Daniel Marjamäki
529b255e99
ValueFlow: Better errorpath for increment/decrement
2017-08-25 23:07:26 +02:00
Daniel Marjamäki
b1b8e5270a
ValueFlow: Better errorpath for increment/decrement
2017-08-25 22:15:52 +02:00
Daniel Marjamäki
50636f75ba
ValueFlow: Improved error path for compound assignments
2017-08-24 22:02:49 +02:00
Daniel Marjamäki
f10634c021
ValueFlow: Dont try to evaluate '/=0;'
2017-08-23 17:53:05 +02:00
Daniel Marjamäki
167cfb1ac5
valueFlowForward: improve handling of compound assignments
2017-08-23 11:13:47 +02:00
Daniel Marjamäki
3abb62a6d1
Fixed #8036 (valueFlowUninit: strcpy(buf, e = str), free(e);)
2017-08-20 19:47:26 +02:00
Daniel Marjamäki
e58344c2c9
Fixed compiler warning
2017-07-22 16:23:33 +02:00
Daniel Marjamäki
bf5040e3d6
Fixed #7701 (ValueFlow: handle 64-bit unsigned values )
2017-07-22 12:19:46 +02:00
Daniel Marjamäki
32fe0aba41
Fixed #8037 (ValueFlow: global variable might be modified by function call)
2017-07-09 12:50:17 +02:00
Daniel Marjamäki
bce0776417
Fixed #7795 (ValueFlow: Value is not known after conditional increment )
2017-06-01 15:16:07 +02:00
Ayaz Salikhov
28aa939d69
iwyu - include what you use
2017-05-27 04:33:47 +02:00
Daniel Marjamäki
82a372a380
Try to clarify ErrorPath texts
2017-05-20 08:47:35 +02:00
Daniel Marjamäki
f92b16706c
ValueFlow: Add ErrorPath info after for loop
2017-05-19 16:32:58 +02:00
Daniel Marjamäki
2bb54fef69
ValueFlow: Test ErrorPath handling
2017-05-19 14:34:59 +02:00
Daniel Marjamäki
040d2f0012
Use simplecpp lexer in test cases
2017-05-18 21:52:31 +02:00
Daniel Marjamäki
980ca39fe2
valueFlowForward: better handling of sizeof() in rhs in assignments
2017-04-29 08:25:55 +02:00
Daniel Marjamäki
89532cf8b9
Fixed #7968 (valueFlowBeforeCondition: better handling of compound assignments)
2017-04-25 20:45:02 +02:00
Daniel Marjamäki
37fd60e879
Fixed #7293 (Use of uninitialized pointer not detected (worked in 1.71))
2017-04-24 18:27:16 +02:00
Daniel Marjamäki
8a738eefab
fixed #7998 (uninitialized variable is not found when used with switch/case)
2017-04-23 18:05:14 +02:00
Daniel Marjamäki
8fe7ee1012
Fixed #7886 (ValueFlow: endless forloop 'for (i = 0, j = 0; i < sz && j < 9; i++)')
2017-03-30 22:02:36 +02:00
PKEuS
3c8f5b85ae
Refactorization: Allocate Token::_values (ValueFlow information) dynamically, reducing size of each token by around 10%
2017-03-27 18:48:34 +02:00
PKEuS
97fa9e9d1b
ValueFlow: Stop on inline assembly
2017-03-23 20:01:16 +01:00
Daniel Marjamäki
d1c66edb03
ValueFlow: Known values in conditional code
2017-03-03 01:29:34 +01:00
Daniel Marjamäki
47d39d0a14
Revert "Fixed #7888 (1.77 false positive from knownConditionTrueFalse with sizeof(int) == sizeof(long))"
...
This reverts commit a762511067
.
2017-01-10 13:22:48 +01:00
Daniel Marjamäki
a762511067
Fixed #7888 (1.77 false positive from knownConditionTrueFalse with sizeof(int) == sizeof(long))
2017-01-09 22:28:55 +01:00
Daniel Marjamäki
b1f7e46491
Fixed #7323 (valueflow: global variables)
2017-01-09 15:53:08 +01:00
Daniel Marjamäki
f40bdddbab
ValueFlow: Better handling when casting calculation result
2016-12-20 23:09:50 +01:00
Daniel Marjamäki
44ccbdedec
ValueFlow: Improved value for cast
2016-12-20 21:37:25 +01:00
Daniel Marjamäki
606bb78297
ValueFlow: Better handling of casts
2016-12-20 19:32:21 +01:00
Daniel Marjamäki
e14e86c103
ValueFlow: only set values in conditional code in subfunctions when sure
2016-12-20 11:06:20 +01:00
Daniel Marjamäki
807b653739
ValueFlow: Fix FP in for loops when 2nd expression is 0
2016-12-20 07:54:38 +01:00
Daniel Marjamäki
f1ad7368f6
ValueFlow: bool values
2016-12-19 21:21:18 +01:00
Daniel Marjamäki
17aaecbd6b
ValueFlow: Improved handling of sizeof
2016-12-18 14:03:48 +01:00
Daniel Marjamäki
72e4bc9d88
ValueFlow: skip values that cause false assertion condition
2016-12-17 21:23:14 +01:00
Frank Zingsheim
cb5a5e6a25
Improve Fix #6180 (Access of moved variable still allowed until function is called)
2016-12-17 16:42:46 +01:00
Daniel Marjamäki
31337dda27
ValueFlow: Better handling of && and || in for loop to avoid FP
2016-12-11 21:19:24 +01:00
Frank Zingsheim
e0d4720e19
Fix #7829 (false-positive: knownConditionTrueFalse linked to virtual method)
...
Return values of virtual functions in valueflow are only possible values
since function might be overloaded.
2016-12-11 10:44:05 +01:00
Daniel Marjamäki
b098d5fbd6
ValueFlow: We need better handling of casts
2016-12-10 22:09:01 +01:00
Daniel Marjamäki
5df8e7f50c
Fixed #7596 (ValueFlow: better handling for 'x*(1-x-1)')
2016-12-04 22:39:59 +01:00
Stefan Weil
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
Daniel Marjamäki
d40f4e4a55
Fixed #7778 (valueFlowAfterAssign: alias)
2016-11-21 17:26:36 +01:00
Daniel Marjamäki
74fa69fe5e
Fixed #7821 (syntax error, first token is &)
2016-11-20 17:59:50 +01:00
Frank Zingsheim
c8ff96fe8f
Fixed #6180 (Usage of variable after std::move or std::forward)
2016-11-20 15:14:49 +01:00
Daniel Marjamäki
5b377ea2e4
Fixed #7821 (segmentation fault, invalid last token)
2016-11-20 14:15:51 +01:00
Daniel Marjamäki
e1e9eacccc
ValueFlow: Added float type
2016-11-13 22:59:56 +01:00
Daniel Marjamäki
7ebfb10edd
Fixed #7806 (ValueFlow: better handling of subfunction with early return)
2016-11-13 18:19:51 +01:00
Daniel Marjamäki
ac7b351d1e
ValueFlow: Don't calculate x<<64 and x>>64
2016-11-06 20:40:58 +01:00
Daniel Marjamäki
dd69d5eabe
ValueFlow: Don't calculate result when there is UB
2016-11-06 17:42:01 +01:00
Daniel Marjamäki
2885a75ea6
ValueFlow: handle ~ in setTokenValue
2016-11-05 09:29:22 +01:00
Frank Zingsheim
d4f01583b6
Fixed TODO (check if function parameter is non-const reference etc..) by common function
2016-11-01 14:06:30 +01:00
Robert Reif
4216b26b8c
Fixed #7775 (crash at valueFlowSetConstantValue)
2016-10-26 10:36:02 +02:00
Daniel Marjamäki
8a0f3009ff
ValueFlow: inner and outer function return values
2016-10-22 17:22:57 +02:00
Daniel Marjamäki
77cd6c194f
ValueFlow: Set 'known' property for function return values
2016-10-22 12:24:15 +02:00
Daniel Marjamäki
86a620a3b4
ValueFlow: Better handling of function return value when there are 0 parameters
2016-10-20 16:10:55 +02:00
Daniel Marjamäki
7fb812f415
Fixed #7752 (ValueFlow: no conditional value, probably because condition is in ternary operator and/or in function call.)
2016-10-16 07:15:28 +02:00
Daniel Marjamäki
ad74421526
Fixed #7756 (ValueFlow: fix bug in valueAfterAssign, same variable in lhs and rhs)
2016-10-15 19:09:50 +02:00
Boris Egorov
a32f61ae4a
Fixed #7139 (ValueFlow: Missed shift operation in for expression)
2016-10-04 13:09:33 +07:00
Daniel Marjamäki
305609f4fb
Fixed #7688 (setTokenValue: crash when there is no 2nd operand for ternary operator)
2016-08-17 18:44:41 +02:00
Daniel Marjamäki
1f98af654a
ValueFlow: better handling of ? when condition result is known
2016-08-15 14:19:35 +02:00
Daniel Marjamäki
62362cd06d
ValueFlow: improve handling of unary minus
2016-08-14 22:19:06 +02:00
Daniel Marjamäki
4f051bf9dd
Fixed #7599 (valueFlowAST: handle && and || better)
2016-07-17 21:51:20 +02:00
Daniel Marjamäki
b26dd1ccab
ValueFlow: Handle enums
2016-05-07 20:18:07 +02:00
Daniel Marjamäki
1ab5805d98
Fixed #6616 (valueFlowForward: for loop, variable in 3rd expression is changed in loop body)
2016-02-08 10:43:41 +01:00
Daniel Marjamäki
d5884692df
Fixed #7363 (valueflowOppositeCondition - if (size1 > size2) ... else if (size1 < size2) ...)
2016-01-30 22:13:03 +01:00
Daniel Marjamäki
30f2bb7796
ValueFlow: set known value for opposite condition in else if ( #5503 )
2016-01-30 20:03:55 +01:00