Commit Graph

12175 Commits

Author SHA1 Message Date
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
Georgy Komarov c5369b84e1
Prevent copying in range-based for loops (#2751)
Use reference types in range for loops to prevent copying.
2020-08-23 20:53:44 +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
Paul Fultz II becdf20310
Fix crash in isSameExpression (#2748) 2020-08-22 07:05:21 +02:00
Kamil Dudka 33fb0e782e
enable moduloofone reports only with --enable=style (#2747)
... because it is reported with Severity::style
2020-08-21 20:43:03 +02:00
Daniel Marjamäki e0e70c2531 Fixed compiler warnings 2020-08-21 17:23:55 +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 f413c9cad8 Improve handling of decltype( in for loops
Simplify pattern macht and token selection

Improve handling of decltype( in for loops
2020-08-17 20:52:14 +02:00
Paul e759508335 Remove reduntant condition 2020-08-13 10:10:26 -05:00
Paul a509de4d70 Add moves 2020-08-11 11:50:27 -05:00
Paul 96b74c57ff Remove useless condition 2020-08-11 11:26:40 -05:00
Paul 8c7e91c985 Remove old container forward 2020-08-10 22:09:33 -05:00
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 72fa5f2e27 Fixed #9752 (ValueFlow: Uninit after assignment with '&') 2020-08-05 22:57:06 +02:00
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 10ac0bcf54 changed variable name to match guidelines 2020-07-29 12:13:21 +02:00
Jens Yllman 62f5f248be use simplifyPath() to make sure file name is same as in the checks 2020-07-28 22:19:27 +02:00
Daniel Marjamäki fa32624c93 ValueFlow: Avoid UB in shift when rhs is negative 2020-07-25 14:13:21 +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 b4552dedb0 Fix Cppcheck warning 2020-07-24 19:58:36 +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 a11a0e79e4 Fixed Cppcheck internal warning 2020-07-23 18:54:40 +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 f4a6f8ad07
Merge pull request #2720 from pfultz2/crash-type-scope
Fix crash when typeScope is missing
2020-07-23 09:31:59 +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 0def5d7a9a Reduce variable scope 2020-07-21 19:09:58 -05:00
Paul 3480aba35b Fix crash when typeScope is missing 2020-07-21 14:09:46 -05:00
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
Paul 5bc5c96c8f Fix cppcheck error 2020-07-21 13:20:39 -05:00
Paul 38e1b57bc9 Use refs 2020-07-21 13:18:45 -05:00
Daniel Marjamäki aad455e1ea Fix compile error 2020-07-21 17:43:12 +02:00
Daniel Marjamäki 453cd93fae update warning hash calculation 2020-07-21 16:00:09 +02:00
Daniel Marjamäki 83be203d44
Merge pull request #2715 from rikardfalkeborn/refactor-use-visitastnodes-more
Refactor use visitastnodes more
2020-07-21 15:26:58 +02:00
Daniel Marjamäki 26c849b732
Merge pull request #2716 from rikardfalkeborn/refactor-use-simple-loop-instead-of-stack-in-checktype
Refactor: Simplify checkSignConversion
2020-07-21 15:26:03 +02:00
Daniel Marjamäki 4ab04db53c Rename 'cppcheckID' to 'hash' 2020-07-21 11:27:03 +02:00
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
Rikard Falkeborn ed36856451 Refactor: Use visitAstNodes in checkuninitvar 2020-07-20 11:03:52 +02:00
Rikard Falkeborn 9ced26a7a1 Refactor: Use visitAstNodes in checkcondition 2020-07-20 11:03:29 +02:00
Rikard Falkeborn 82fe6193fa Refactor: Use visitAstNodes in checkstring 2020-07-20 10:25:00 +02:00
Rikard Falkeborn 2ace2b006a Refactor: Use visitAstNodes in checkleakautovar 2020-07-20 10:25:00 +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 fe0081496c Bug hunting; Avoid bailout uninit FP, arrays 2020-07-19 16:27:56 +02:00
Daniel Marjamäki 7e65b561f0 AST: Fix ast for 'for ((..initexpr..);;)' 2020-07-19 11:10:38 +02:00
Daniel Marjamäki 3723c708fc ImportProject; Do not fail loading a GUI project that has warning tags 2020-07-19 08:07:10 +02:00
Daniel Marjamäki e9281babc4 Bug hunting; avoid false positives for structs/classes with constructors 2020-07-18 18:54:21 +02:00
Daniel Marjamäki 7cb65b7f67 GUI: Speedup code editor when selecting another warning in the same file 2020-07-18 18:14:55 +02:00
Georgy Komarov 6bc13080ee
Simplify condition 2020-07-18 07:07:20 +03:00
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
Daniel Marjamäki 58638d7757 Bug hunting; Fix itc.py test 2020-07-17 13:20:31 +02:00
Daniel Marjamäki 7a4e6daecd Fix import GUI project problem 2020-07-17 11:26:03 +02:00
Daniel Marjamäki f2bd603bd3 Bug hunting; Fix TestBughuntingChecks 2020-07-17 11:02:46 +02:00
Daniel Marjamäki 592637af61 Bug hunting; Avoid uninit false positives with simple analysis 2020-07-17 09:05:38 +02:00
Daniel Marjamäki 9af288e1dd Fixed #9724 (GUI: The tags do not work anymore) 2020-07-16 23:03:54 +02:00
Paul 831690f89b Use parseDecl instead 2020-07-16 14:33:39 -05:00
Daniel Marjamäki 0632f86449 Bug hunting; avoid bailout false positives when constructor is called 2020-07-16 16:38:22 +02:00
Daniel Marjamäki 9edbec8594 astyle formatting 2020-07-16 16:36:11 +02:00
Daniel Marjamäki 118e9eb3e2 Better handling of CppcheckID suppressions 2020-07-16 15:27:23 +02:00
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 6ab4f39f52 GUI: Suppress cppcheck-id 2020-07-15 13:03:07 +02:00
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 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
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