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12039 Commits

Author SHA1 Message Date
Paul
423dcfd005 Fix issue 9796: False positive: lifetime, pointer item is not deallocated by pop_back 2020-07-15 12:22:36 -05:00
Daniel Marjamäki
a6d70b9022 Code cleanup, __temp__ files are not needed anymore 2020-07-14 16:54:00 +02:00
Daniel Marjamäki
8d6fd4769b Bug hunting; Terminating analysis 2020-07-14 11:22:42 +02:00
Daniel Marjamäki
176826a1f5 Bug hunting; Avoid false positives 2020-07-14 11:15:26 +02:00
Daniel Marjamäki
fe324aea49 Bug hunting; Detect internal error and throw exception 2020-07-14 10:25:00 +02:00
Daniel Marjamäki
6030ab72ab Bug hunting; Avoid some bailout false positives in uninit checker 2020-07-14 08:12:40 +02:00
Daniel Marjamäki
e0be224f4e
Merge pull request #2709 from pfultz2/fp-duplicate-cond-this 
Fix FP of duplicateCondition when modifying the this variable
 2020-07-13 21:14:58 +02:00
Daniel Marjamäki
b2f463dd65
Merge pull request #2707 from Ken-Patrick/fp_pointer_expressions 
Fix some false positives when the same expression at different places…
 2020-07-13 20:59:22 +02:00
Paul
519f2a537a Format 2020-07-13 13:55:45 -05:00
Daniel Marjamäki
33557012a1
Merge pull request #2706 from rikardfalkeborn/condition-fn-with-sizeof 
Fix FN with known condition and sizeof
 2020-07-13 20:54:25 +02:00
Daniel Marjamäki
36b9e545ac Bug hunting; more bailout warnings in uninit check 2020-07-13 20:23:44 +02:00
Daniel Marjamäki
8ba714373f
Merge pull request #2704 from rikardfalkeborn/9635-memleak-with-comma-operator-in-if-statement 
Fix #9635 (FP: Memory leak with comma operator in if-statement)
 2020-07-13 20:08:57 +02:00
Paul
450bdfedf3 Fix FP of duplicateCondition when modifying the this variable 2020-07-13 12:40:01 -05:00
Daniel Marjamäki
4465d033f6 Bug hunting; When passing uninitialized data to unknown function it is inconclusive if that would be a problem for the function or not 2020-07-13 11:43:11 +02:00
Ken-Patrick Lehrmann
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
Rikard Falkeborn
d8e7e9176b Fix FN with known condition and sizeof 
cppcheck behaved differently if sizeof was to the left or right of the
comparison. In order to fix this, we cannot break the while loop until
all operands have been processed.
 2020-07-10 23:39:16 +02:00
Daniel Marjamäki
27841d6b81 Fixed #9795 (False positive: Local lock is not ineffective, mutex is locked in thread also.) 2020-07-10 19:24:45 +02:00
Rikard Falkeborn
1e679cc5d1 Fix #9635 (FP: Memory leak with comma operator in if-statement) 
When checking for comparisons in if-statements, if there are comma
operators in the if-statement, skip until after the last comma.
 2020-07-09 21:31:43 +02:00
Daniel Marjamäki
0c6aabe444
Merge pull request #2703 from rikardfalkeborn/9652-fp-function-call-cast-config 
Fix #9652 (fp memleak with function call with cast)
 2020-07-08 15:10:41 +02:00
Rikard Falkeborn
4996ec190e Fix #9652 (fp memleak with function call with cast) 
When the first argument was (void *)(1), at the start of the second
iteration, arg was pointing to the "1", which caused problems for
nextArgument(), which saw the ")" as the next token and returned
nullptr, signalling that there are no more arguments.

Instead, save the first token in the argument, which makes
nextArgument() do the right thing.
 2020-07-08 00:02:39 +02:00
Rikard Falkeborn
d5345052ab Fix #9793 (false positive, memleak with lambda) 
Skip scopes with lambdas (similar to how checkleakautovar does). In
order to fix this when the lambda is inside a for loop, make
hasInlineOrLambdaFunction() recursive. This should be what all existing
users want.
 2020-07-07 21:51:36 +02:00
Daniel Marjamäki
686a6c7862 Fixed compiler warning 2020-07-03 17:54:55 +02:00
Daniel Marjamäki
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
Daniel Marjamäki
f56a17bf3d Fixed #8858 (FP: identicalConditionAfterEarlyExit when there is #if) 2020-07-01 07:48:32 +02:00
Daniel Marjamäki
ddd21a260f Fixed #6978 (False positive: unusedLabel shown for labels that are used in some preprocessor configurations) 2020-06-30 18:26:24 +02:00
Daniel Marjamäki
0583763cc6 Fixed #3088 (False positive: Dont report "struct or union member is never used" for structs with __attribute__((packed)) or #pragma pack(push)) 2020-06-30 11:00:40 +02:00
Daniel Marjamäki
1567ccf97b
Merge pull request #2700 from pfultz2/afterConditionFunction 
Extend scope of afterCondition until end of function
 2020-06-30 08:28:08 +02:00
Paul
c76c03c711 Replace noreturn with macro 2020-06-29 15:54:51 -05:00
Paul
67e06c18a9 Use the already available function scope 2020-06-29 15:36:01 -05:00
Paul
a412e3e1f1 Mark syntax error functions as noreturn 2020-06-29 15:33:25 -05:00
Paul
600919f624 Remove redundant conditions 2020-06-29 15:13:06 -05:00
Daniel Marjamäki
f34ff9325a Fixed testrunner 2020-06-29 21:53:14 +02:00
Daniel Marjamäki
a0770f05e1 Reuse 'extractForLoopValues' in ValueFlow 2020-06-29 21:01:43 +02:00
Paul
07d8cb4f01 Extend scope of afterCondition until end of function 2020-06-29 11:55:59 -05:00
Daniel Marjamäki
a49d277e0d Fixed #6471 (FP functionConst - member function modifying member variable after cast (inconclusive)) 2020-06-29 13:09:01 +02:00
Daniel Marjamäki
5164d87a2e Bug hunting; Fixed false positives for containers 2020-06-28 22:49:51 +02:00
Daniel Marjamäki
b5cd96cbda ExprEngine; Rename variable 2020-06-28 21:36:56 +02:00
Daniel Marjamäki
ad5e4fef1f Bug hunting; improved handling of 'malloc' in uninit checker 2020-06-28 21:20:59 +02:00
Daniel Marjamäki
6c588cc3ef Library: Refactoring <alloc> init attribute 2020-06-28 21:01:43 +02:00
Daniel Marjamäki
0e736e0c29 Rename BugHuntingException to ExprEngineException 2020-06-28 17:39:14 +02:00
Daniel Marjamäki
d4bd3016da ExprEngine; Improved handling of for loop, loop variable 2020-06-28 17:28:40 +02:00
Daniel Marjamäki
c42c751d61 ExprEngine; Fixed testing 2020-06-28 13:41:27 +02:00
Daniel Marjamäki
f85cdd3f77 ExprEngine: DataIndex update to get better debug output 2020-06-28 10:52:50 +02:00
Daniel Marjamäki
bcaf792e30 Bug hunting; Fix FP for struct with uninitialized members passed to function in C 2020-06-27 22:11:12 +02:00
Daniel Marjamäki
c7a8f5217f ExprEngine; Fixed Cppcheck warning 2020-06-27 21:54:38 +02:00
Daniel Marjamäki
cd49eb0978 Fix Cppcheck warnings 2020-06-27 20:59:10 +02:00
Daniel Marjamäki
d353a4ecba ExprEngine; copy Data => copy arrays 2020-06-27 18:09:43 +02:00
Daniel Marjamäki
e6aa96d90f Bug hunting; Improved uninit checking 2020-06-27 14:59:02 +02:00
Daniel Marjamäki
303cadf99f Bug hunting; Improved uninitData warning when unknown function is not configured 2020-06-27 14:29:29 +02:00
Daniel Marjamäki
e19ef6ac62 Bug hunting; Improved uninit checking for function calls with constant parameter 2020-06-27 14:15:53 +02:00