Commit Graph

10188 Commits

Author SHA1 Message Date
Paul Fultz II 1c5f496350
Fix issue 8373: false negative: invalid iterator (#2761) 2020-08-31 08:46:56 +02:00
Paul Fultz II 6ab3c93fb1
Fix issue 9756: false negative: invalid iterator from std::find_if (#2760) 2020-08-28 19:29:09 +02:00
Paul Fultz II 82bdbcd73b
Fix issue 9859: false positive: knownConditionTrueFalse (#2759) 2020-08-28 19:26:09 +02:00
Paul Fultz II 494fff65b7
Add outOfBounds check for iterators to containers (#2752) 2020-08-26 21:05:17 +02:00
IOBYTE 8774e97f26
fix #9771 (Syntax error; operator != <> ()) (#2757) 2020-08-26 18:39:33 +02:00
Daniel Marjamäki bb5cad42cd astyle formatting
[ci skip]
2020-08-26 10:15:09 +02:00
Paul Fultz II 9ec27c112f
Fix issue 9855: false positive: uninitvar (#2754) 2020-08-26 07:02:15 +02:00
IOBYTE 7cf3909275
fix #9854 (Syntax error on valid C++ code) (#2756) 2020-08-26 07:00:58 +02:00
Paul Fultz II 46bf2d7d52
Dont diagnose impossible values for iterators (#2755) 2020-08-26 06:58:53 +02:00
shaneasd 45fc6a0eeb
Test for syntax error in nested templates (#2746) 2020-08-25 07:14:44 +02:00
Paul Fultz II ec89c57a90
Fix issue 9849: false positive: containerOutOfBounds (#2753) 2020-08-25 07:12:41 +02:00
Daniel Marjamäki 6277eece67 Variable contracts 2020-08-24 20:57:49 +02:00
Paul Fultz II 02287d9d34
Fix issue 7324: valueFlowForward : decrement (#2737) 2020-08-24 13:10:36 +02:00
Daniel Marjamäki 2bb73840fc astyle formatting 2020-08-23 17:17:33 +02:00
Paul Fultz II ac846b96d1
New check: Iterating a known empty container (#2740) 2020-08-22 09:16:26 +02:00
eivindt 27e40af06c
Add support for comments at end of suppression in suppression files (#2736) 2020-08-20 21:49:07 +02:00
Paul Fultz II a332062385
Add exprId to tokens (#2744) 2020-08-20 18:21:29 +02:00
Daniel Marjamäki 6446790d48
Merge pull request #2739 from dan-42/fix_ticket_9839_ast_error
Fix ticket 9839: AST broken; range for loop that uses decltype
2020-08-18 21:59:50 +02:00
Paul 7776fb82a2 Fix issue 737: new check: Dereference end iterator 2020-08-17 16:36:45 -05:00
Daniel Friedrich 160b8f0f17 Add test case to reproduce bug
Add tokenizer test range based for with decltyle(x) *
2020-08-17 20:51:45 +02:00
Paul 71c228a01a Check for containers that modify the size using square bracket 2020-08-10 22:07:22 -05:00
Paul a5b0a1c9e2 Evaluate container size in program memory 2020-08-10 20:08:49 -05:00
Paul fec2914700 Add tests for container changes 2020-08-09 22:52:03 -05:00
Paul 26693df788 Use forward analyzer for container forward 2020-08-08 00:10:03 -05:00
Daniel Marjamäki b263b93f73
Merge pull request #2732 from pfultz2/invalid-container-subobj
Fix issue 9780: FP: invalidContainer calling push_back after getting the address of the vector
2020-08-07 09:52:25 +02:00
Paul 56affc9080 Fix issue 9780: FP: invalidContainer calling push_back after getting the address of the vector 2020-08-06 21:08:30 -05:00
Daniel Marjamäki 5372e93964 Fixed #9825 (redundantAssignment: Do not warn about volatile data) 2020-08-06 22:18:25 +02:00
Paul 0cc1f69862 Fix issue 9770: FP returnDanglingLifetime for class method taking const char* and returning std::string 2020-08-05 23:17:35 -05:00
Daniel Marjamäki d5b64d9c3a Clarify inconclusive uninitMemberVar warning in copy constructors, it's in general a good idea to copy all the data. 2020-08-05 13:57:40 +02:00
Daniel Marjamäki 7a85b8e452 Do not ask that calculation is clarified when different order would be invalid 2020-08-05 13:20:18 +02:00
Jens Yllman 5ba5916a11 clearer name on the test 2020-08-03 10:30:21 +02:00
Jens Yllman 1cc16deba3 test added to show it works after fix 2020-07-30 22:22:54 +02:00
Daniel Marjamäki fab3a8efc8
Merge pull request #2721 from KenPatrickLehrmann/compound_assign_bitshift
Add missing operators <<= and >>=
2020-07-25 09:39:32 +02:00
Daniel Marjamäki 6a839ad511 Fixed #9814 (False positive: functionConst, trailing return type) 2020-07-24 19:40:42 +02:00
Paul 46e008c3e2 Fixed #9816 (False positive: Condition '!b' is always false in nested do-while loop) 2020-07-24 08:13:14 +02:00
Daniel Marjamäki 53e11ead8f Fix Cppcheck warning: unused variable in test 2020-07-23 19:50:41 +02:00
Ken-Patrick LEHRMANN a923115710 Add missing operators <<= and >>=
This fixes issues (at least false positives) in code using them.
For instance:

```
unsigned compute(unsigned long long a) {
    unsigned num = 0;
    while (a > 0xFFFFFFFF) {
      a >>= 32;
      num += 32;
    }
    if (a > 0xFFFF) {
      a >>= 16;
      num += 16;
    }
    if (a > 0xFF) {
      num += 8;
    }
    return num;
}
```

would give false positive:
```
cppcheck --enable=style  sl3.cpp
Checking sl3.cpp ...
sl3.cpp:11:11: style: Condition 'a>0xFF' is always false [knownConditionTrueFalse]
    if (a > 0xFF) {
          ^
sl3.cpp:3:14: note: Assuming that condition 'a>0xFFFFFFFF' is not redundant
    while (a > 0xFFFFFFFF) {
             ^
sl3.cpp:11:11: note: Condition 'a>0xFF' is always false
    if (a > 0xFF) {
          ^
```
2020-07-23 14:36:34 +02:00
Daniel Marjamäki 682a6d1c02 Fixed #9017 (Simple classes without side effects not reported as unused) 2020-07-23 11:10:08 +02:00
Daniel Marjamäki 25ad22c6af astyle formatting
[ci skip]
2020-07-23 10:09:06 +02:00
Daniel Marjamäki df99d8aa0a
Merge pull request #2719 from pfultz2/fp-unreachable-alias
Fix issue 9807: False positive: ValueFlow in unreachable code, || lhs is true
2020-07-23 09:52:54 +02:00
Daniel Marjamäki 2fd44fa464
Merge pull request #2710 from pfultz2/fp-invalid-container-pointer
Fix issue 9796: False positive: lifetime, pointer item is not deallocated by pop_back
2020-07-22 09:24:54 +02:00
Paul abeea7b32b Merge branch 'main' into fp-invalid-container-pointer 2020-07-21 13:31:13 -05:00
Paul dbb410cdae Merge branch 'main' into condition-in-expr 2020-07-21 13:28:59 -05:00
Rikard Falkeborn 7973fd843c Refactor: Simplify checkSignConversion
The loop only checks astoperand1 and astoperand2. Simplify the condition
to loop over these instead of using a stack. Also, add a testcase for
when astoperand2 is negative.
2020-07-20 11:16:56 +02:00
Paul e2a81a382f Track reading aliases during valueflow forward 2020-07-19 23:25:35 -05:00
Daniel Marjamäki 4a76dbb632 Bug hunting; Avoid bailout uninit FP, stream object 2020-07-19 16:54:44 +02:00
Daniel Marjamäki 7e65b561f0 AST: Fix ast for 'for ((..initexpr..);;)' 2020-07-19 11:10:38 +02:00
Daniel Marjamäki e9281babc4 Bug hunting; avoid false positives for structs/classes with constructors 2020-07-18 18:54:21 +02:00
Georgy Komarov 382f21a5c9
Fixed crash on garbage code: comparisson with an empty second operand
This will fix #9774.
2020-07-18 07:02:12 +03:00
Paul 831690f89b Use parseDecl instead 2020-07-16 14:33:39 -05:00
Daniel Marjamäki 47ff29f1c8
Merge pull request #2708 from pfultz2/multi-mutex-lock
Handle FPs: mutexes being locked at different scopes
2020-07-16 08:35:05 +02:00
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 af0db3cc21 Add cppcheck-id for warnings. To start with it's a simple id that changes when file is changed. 2020-07-14 22:30:42 +02:00
Paul 1f74400f13 Merge branch 'revert-mutex-delete' into multi-mutex-lock 2020-07-14 13:05:14 -05:00
Paul 4373404238 Revert "Fixed #9795 (False positive: Local lock is not ineffective, mutex is locked in thread also.)"
This reverts commit 27841d6b81.
2020-07-14 13:04:59 -05:00
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 cb221e970d Bug hunting: Add test case for CVE-2019-12977. Passing uninitialized struct to function 2020-07-13 20:42:53 +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
Daniel Marjamäki 0009b4c8af test/bug-hunting/cve.py: Add --slow argument to check slow packages 2020-07-13 11:18:51 +02:00
Paul caabe56f14 Handle FPs: mutexes being locked at different scopes 2020-07-12 21:31:53 -05:00
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 921997c9e9 itc.py; false negative is fixed 2020-07-03 17:50:56 +02:00
orbitcowboy cabafca5ae windows.cfg: Added some constants from WinUser.h 2020-07-01 16:14:59 +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 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
Paul 07d8cb4f01 Extend scope of afterCondition until end of function 2020-06-29 11:55:59 -05:00
Paul edcf668ae2 Update test mesg 2020-06-29 10:15:36 -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
Paul d5b6d49d96 Fix issue 9578: false negative: (style) Condition '...' is always false 2020-06-28 15:28:08 -05:00
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 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 e1704f2b50 Bug hunting; fix juliet test cases error id 2020-06-28 08:16:46 +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 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 e19ef6ac62 Bug hunting; Improved uninit checking for function calls with constant parameter 2020-06-27 14:15:53 +02:00
Daniel Marjamäki ff5a717fc6 Bug hunting; Avoid false positives for const parameter data 2020-06-27 12:17:11 +02:00
Daniel Marjamäki b09bcdc38c Use ValueFlow for compareBoolExpressionWithInt 2020-06-27 08:13:22 +02:00
Daniel Marjamäki 1ad70bbeb8
Merge pull request #2697 from pfultz2/unique_lock
Extend mutex checking for more locking patterns
2020-06-27 07:32:26 +02:00
Daniel Marjamäki c3749625f3
Merge pull request #2688 from jpyllman/fix_chklibfunc
not report locally declared functions as missing configuration of --check-library
2020-06-27 06:53:09 +02:00
Daniel Marjamäki 72bdeb9307
Merge pull request #2698 from pfultz2/const-param-casts
Fix issue 9778: False positive: constParameter when returning non-const reference cast
2020-06-27 06:45:30 +02:00
Paul cf475fab51 Fix issue 9778: False positive: constParameter when returning non-const reference cast 2020-06-26 15:47:59 -05:00
Daniel Marjamäki f5ace9ffbe SymbolDatabase; Improved ValueType when container methods items 2020-06-26 22:47:28 +02:00
Paul 82b91869ee Extend mutex checking for more locking patterns 2020-06-26 15:06:20 -05:00
orbitcowboy b33326bf51 windows.cfg: Added a regression test for GetSystemInfo that ensure no uninitvar-FP is shown. 2020-06-26 20:45:18 +02:00
Daniel Marjamäki cb8396aaf8
Merge pull request #2696 from pfultz2/getTokenArgumentFunction-ast
Fix issue 9710 and 9767: Use AST to get function from argument
2020-06-26 09:50:18 +02:00