Commit Graph

10268 Commits

Author SHA1 Message Date
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
Daniel Marjamäki af6e76d623 Fixed #9787 (Better handling of user defined literals) 2020-06-25 22:06:34 +02:00
Paul 1676ad5f45 Fix issue 9710 and 9767: Use AST to get function from argument 2020-06-25 12:54:46 -05:00
Daniel Marjamäki ec8fbb1580
Merge pull request #2682 from pfultz2/check-mutexes
Add new check for incorrect usage of mutexes and lock guards
2020-06-25 16:21:36 +02:00
Paul 3c10a9c659 Update message 2020-06-24 18:09:30 -05:00
Jens Yllman a87686911a one more test updated for the new checkLibraryFunction 2020-06-23 09:06:54 +02:00
Daniel Marjamäki 9b5986505e AST; Improved ast for variable declaration with assignment 2020-06-22 08:34:31 +02:00
Daniel Marjamäki f792cabc2b ExprEngine; better handling of containers 2020-06-21 21:48:36 +02:00
Daniel Marjamäki 5497e8ed67 ExprEngine; Improved handling of stream read 2020-06-21 20:05:26 +02:00
Daniel Marjamäki 8ec5605bac
Merge pull request #2689 from Ken-Patrick/9769
9769: Improve value flow for ternary operator
2020-06-21 13:04:43 +02:00
Daniel Marjamäki f270ca1909 ExprEngine; Better handling of function calls 2020-06-20 23:00:39 +02:00
Ken-Patrick Lehrmann 5a3789a23f 9769: Improve value flow for ternary operator
In some cases, the condition of the ternary operator is assigned a known
value after the two possible results, and in such cases, we would not
take the opportunity to assign a value to the ternary operator (and to
the other parents in the ast).
This patch adds this capability.
2020-06-20 10:29:28 +02:00
Jens Yllman aa380e0de1 fix a test that was suppressed because #9002 2020-06-19 23:04:15 +02:00
Daniel Marjamäki af45148e58 ExprEngine; Refactor and improve code. Add tests for increments. 2020-06-19 20:40:20 +02:00
Daniel Marjamäki 06aeac75dc Bug hunting; Fix false negatives 2020-06-19 18:38:02 +02:00
Daniel Marjamäki 6ec15b6d7b ExprEngine; Simple handling of increment/decrement 2020-06-19 17:35:35 +02:00
Daniel Marjamäki f516bde744 ExprEngine; Fix TODO assertion 2020-06-19 14:05:19 +02:00
Daniel Marjamäki ab663feea8 Add testbughuntingchecks.cpp 2020-06-19 13:38:56 +02:00
Daniel Marjamäki d0ac583b97 Add 'bughuntingchecks' 2020-06-19 13:16:48 +02:00
Daniel Marjamäki d3df68e376 Updated bug hunting test 2020-06-18 14:31:51 +02:00
Paul f7029e62ac Check for mor FPs 2020-06-17 17:06:06 -05:00
Daniel Marjamäki 3f8218af1b Removed CheckClass::operatorEq: does not 'belong' 2020-06-17 20:35:43 +02:00
Ken-Patrick Lehrmann c297ed8204 Better handle noreturn or throwing functions in valueflow
Teaching cppcheck about `BOOST_THROW_EXCEPTION` and
`boost::throw_exception`, and using noreturn information from libraries
in value flow.

This fixes false positive nullPointerRedundantCheck with the following
code:
```
void throwexception(int * buf)
{
    if (!buf)
        boost::throw_exception(std::bad_alloc());
    *buf = 0;
}
```
2020-06-17 19:06:14 +02:00
Paul 21f76d62a1 Merge branch 'main' into check-mutexes 2020-06-17 10:45:43 -05:00
Daniel Marjamäki 51a6af299f
Merge pull request #2683 from Ken-Patrick/cast_expandTemplate
Fix handling of c++ casts in template expansion
2020-06-17 09:21:01 +02:00
Daniel Marjamäki 94f92f00fe
Merge pull request #2684 from firewave/precompiled
use precompiled headers if CMake supports it
2020-06-17 07:53:51 +02:00
Daniel Marjamäki 4947a3b7ab Bug hunting; review and improve handling of multi dimensional arrays 2020-06-16 22:50:45 +02:00
firewave a49d60f0b3 use precompiled headers if CMake supports it 2020-06-16 19:56:53 +02:00
Ken-Patrick Lehrmann 5c1a2db434 Fix handling of c++ casts in template expansion
Cast were not expanded properly: the `<` was not taken into account in
typeindentlevel, so we would then miss a `>`, resulting in syntaxError.
2020-06-16 19:36:04 +02:00
Paul 18225ee27e Update text and change to warnings 2020-06-16 10:32:39 -05:00
Paul 172537807b Add check for incorrect usage of mutexes and lock guards 2020-06-15 19:40:54 -05:00
Daniel Marjamäki 6faad9cd90 Bug hunting; better handling when assigning multidimensional array in for loop 2020-06-15 22:42:45 +02:00
Daniel Marjamäki f5fe5ca2dd
9768: Fix ast with throw in the middle of return (#2678)
* 9768: Fix ast with throw in the middle of return

```
int f(bool x)
{
    return x ? 0 : throw 0;
}
```

The `throw` part was not included in the ast, leading to an invalid
ternary operator.

* 8526: Fix ast construction for ternary operator

This tries to decide a bit more properly when ':' can be part of a
ternary operator. More precisely, there are some times when we want to
delay the construction of the ast for ':', so that it is place
accordingly to the matching '?'.

Typically, this fixes an issue with
`return val < 0 ? throw 1 : val;`,
where the ast for ':' would be constructed during as part of the
`throw`, and the ast for `?` would be invalid.

This patch is a bit of a hardcode, stating that we don't expect ':'
inside a throw, unless there is a complete ternary operator in there
(there can't be a range based for loop, a case in a switch). When we
reach ':', we know we are and the end of the `throw`.
2020-06-15 10:36:02 +02:00
Daniel Marjamäki 3fe2b6fe50 Update test. An inconclusive warning message is now shown. 2020-06-14 22:57:50 +02:00
Daniel Marjamäki 2b0e4926bc valueFlowAfterAssign: variable initialization 2020-06-14 21:14:05 +02:00
Ken-Patrick Lehrmann 7ddb7aef7d 8526: Fix ast construction for ternary operator
This tries to decide a bit more properly when ':' can be part of a
ternary operator. More precisely, there are some times when we want to
delay the construction of the ast for ':', so that it is place
accordingly to the matching '?'.

Typically, this fixes an issue with
`return val < 0 ? throw 1 : val;`,
where the ast for ':' would be constructed during as part of the
`throw`, and the ast for `?` would be invalid.

This patch is a bit of a hardcode, stating that we don't expect ':'
inside a throw, unless there is a complete ternary operator in there
(there can't be a range based for loop, a case in a switch). When we
reach ':', we know we are and the end of the `throw`.
2020-06-14 18:57:18 +02:00
Ken-Patrick Lehrmann 4023a487ff 9768: Fix ast with throw in the middle of return
```
int f(bool x)
{
    return x ? 0 : throw 0;
}
```

The `throw` part was not included in the ast, leading to an invalid
ternary operator.
2020-06-14 14:49:10 +02:00
Daniel Marjamäki 37245a8179 Update copyright year 2020-06-13 16:37:12 +02:00
Paul Fultz II 06ed088bd0
Fix issue 9751: Wrong lifetime caused by std::function (#2676) 2020-06-13 10:26:54 +02:00
Paul Fultz II 03b41ac987
Fix issue 9718: False positive: Parameter can be declared const when written to via stream extraction operator (#2677) 2020-06-13 09:20:40 +02:00
orbitcowboy 258d0a6ade Running astyle [ci skip]. 2020-06-12 16:08:40 +02:00
orbitcowboy 9f445fc735 Library: simplified code and added test cases for validating <valid>-tag expressions 2020-06-12 16:06:43 +02:00
orbitcowboy 05c36a79b5 Fix testrunner fail, introduced by latest commit 2020-06-12 09:18:16 +02:00
orbitcowboy a3d58a9302 std.cfg: Allow scientific floating point notation for '<valid>'-tags 2020-06-12 08:51:33 +02:00
orbitcowboy e767bb8ff3 std.cfg: Added tests for 'atanh' 2020-06-11 15:13:19 +02:00
orbitcowboy 0fe0e56986 std.cfg: Added tests for 'acosh' 2020-06-11 15:07:35 +02:00
Daniel Marjamäki 3f1f62e078 Fixed #9746 (SymbolDatabase: Wrong valueType for return) 2020-06-10 21:13:53 +02:00
orbitcowboy 4880f30dc3 std.cfg: Added tests for 'aligned_alloc' 2020-06-10 19:33:22 +02:00
Daniel Marjamäki d31d778bf4 Fixed #9533 (Syntax Error: AST broken, 'for' doesn't have two operands incrementing pointer in initializer) 2020-06-09 20:57:00 +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
Simon Martin 1705d096f7
Simplify empty anonymous namespaces. (#2673) 2020-06-07 13:49:04 +02:00
Ken-Patrick Lehrmann a45c7752a5
9185: Don't syntax error on nested lambdas (#2672) 2020-06-07 08:58:12 +02:00
Paul Fultz II 86ed860d26
Fix issue 9548: False negative: Mismatching iterators when inserting into a vector (#2595) 2020-06-06 17:54:56 +02:00
Ken-Patrick Lehrmann 99ff04f617
9757: skip template parameters when computing scope (#2670)
The template parameter is confusing simplifyUsing: it does not compute
properly the scope, and we end up replace "type" in "to_string" with
"void", then later "void" is removed and we have an internal error.
2020-06-06 17:51:15 +02:00
Daniel Marjamäki 44ff22f879 Fixed #9276 (FP literalWithCharPtrCompare) 2020-06-06 17:47:30 +02:00
Daniel Marjamäki 120c572252 Fixed #9750 (Chained stream operation gives uninitvar error) 2020-06-06 15:24:01 +02:00
Ken-Patrick Lehrmann 8c2c81dbcd
Fix some false positive in loop forward analysis (#2669)
* Fix some false positive in loop forward analysis

In cases like:
```
bool b();
void f()
{
    int val[50];
    int i, sum=0;
    for (i = 1; b() && i < 50; i++)
        sum += val[i];
    for (; i < 50; i++)
        sum -= val[i];
}
```
The forward analysis assumed the second loop was entered, and we ended
up with false positive in it:
 `Array 'val[50]' accessed at index 50, which is out of bounds`

* Fix style
2020-06-05 18:06:03 +02:00
Paul Fultz II 3109d16b42
Fix issue 9742: FP iterators3 for address of reference to vector in struct (#2668) 2020-06-01 08:53:08 +02:00
Paul Fultz II eb4754b7d9
Fix issue 9587: False positive: parameter can be declared with const (#2667) 2020-05-31 10:10:10 +02:00
Sebastian 5cbed0464c
opencv2.cfg: Add types, macros, functions and memory (de)allocation (#2620)
* opencv2.cfg: Add types, macros, functions and memory (de)allocation

* cfg/cppcheck-cfg.rng: Allow alloc/realloc functions in classes
2020-05-30 17:41:44 +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
PKEuS bf69541369 Visual Studio: Use new files precompiled.h with several common includes for core and testrunner.
- CLI+Core: Reduces build time by 55% from 3:53 to 1:47
- Testrunner: Reduces build time by 27% from 1:40 to 1:13
2020-05-29 12:16:04 +02:00
Daniel Marjamäki 67115491ea Fixed #9739 (Tokenizer: simplifyTypedef: wrong simplification in using) 2020-05-29 11:16:49 +02:00
Daniel Marjamäki 7ff692341e Fixed #9730 (Regression: TEXT macro not handled in windows code) 2020-05-28 22:03:16 +02:00
miltolstoy 79c3af56e4
fix 9296: false negative uninit variable (#2663) 2020-05-28 21:28:18 +02:00
Daniel Marjamäki d64631219b Fixed #9741 (Wrong value for sizeof) 2020-05-28 21:24:48 +02:00
Paul Fultz II c9798590ba
Fix issue 9701: False positive. 3rd expression in for uses comma operator. (#2664) 2020-05-28 07:41:47 +02:00
Daniel Marjamäki f482eb49cd ExprEngine; Fixed bug. Constraint expressions must be boolean 2020-05-27 19:37:07 +02:00
Oliver Stöneberg 3a90341961
some CMake cleanups and additions (#2639) 2020-05-27 05:15:46 +02:00
Oliver Stöneberg 4f68d85633
optimized non-matchcompiled Token::simpleMatch() a bit (#2640) 2020-05-26 20:13:56 +02:00
Daniel Marjamäki 9edca82138 Fix testrunner 2020-05-25 16:02:34 +02:00
Daniel Marjamäki f7f26ffe90 Tokenizer: Better handling of c alternative tokens in const method 2020-05-25 15:07:23 +02:00
Paul Fultz II bbe6157e16
Fix issue 9712: False positive: Returning pointer to local variable when return line implicitly cast to return type (#2662) 2020-05-23 23:12:00 +02:00
Ken-Patrick Lehrmann 084529575f
Skip ast validation inside template (#2661) 2020-05-23 21:11:08 +02:00
Daniel Marjamäki 5a4b309e6f Bug hunting: Add 'buffer overflow' check. Detect CVE-2019-19334 2020-05-23 17:50:24 +02:00
Oliver Stöneberg c1f762b861
disabled some Visual Studio warnings (#2635) 2020-05-23 17:42:56 +02:00
orbitcowboy 5142c9e9ed wxwidgets.cfg: Fixed containerOutOfBounds-false negatives for wxArrayInt and wxArrayString. These containers have std::vector like implementation 2020-05-23 09:24:01 +02:00
Oliver Stöneberg 37bc0483a4
made check.h less heavy (#2633) 2020-05-23 07:16:49 +02:00
Paul Fultz II 0832830a95
Fix issue 9721: ValueFlow: Comparison is always false, but ValueFlow says it is always true (#2658) 2020-05-23 07:15:13 +02:00
Paul Fultz II 4270819728
Fix issue 9713: FP invalidContainerLoop when modifying container and immediately exiting the loop (#2659) 2020-05-23 07:14:45 +02:00
Paul Fultz II 6162ebd608
Fix issue 9714: FP invalidContainer related to auto and std::string::insert (#2660) 2020-05-23 07:13:55 +02:00
Paul Fultz II 526abd4b52
Fix issue 9738: ValueFlow: handle std::tie better (#2657) 2020-05-22 22:57:20 +02:00
Daniel Marjamäki c86cfdaa50 Fixed #9736 (False positive: knownArgument in assert calls) 2020-05-22 11:49:28 +02:00
Daniel Marjamäki 43b58dbc9e Fixed #9729 (AST: lambda with noexcept) 2020-05-22 11:29:10 +02:00
Daniel Marjamäki ac1ceb85b6 AST: improved AST when expression starts with %char% or %str% 2020-05-22 09:35:55 +02:00
Daniel Marjamäki 81d8686f99 Changed TODO_ASSERT_EQUALS, we have a false negative 2020-05-21 09:12:19 +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
miltolstoy a9d8b3495d
feat: add modulo of one check (#9528) (#2650) 2020-05-20 23:01:32 +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
Daniel Marjamäki f5f7cb7ff7 test: Removed AstStyle::Verbose 2020-05-19 18:27:44 +02:00
shaneasd 44a3501f1b
cleanup after #9700 (#2648) 2020-05-19 18:15:05 +02:00
Daniel Marjamäki 32e569704b executeCommand in CppCheckExecutor or QCheckThread 2020-05-19 16:04:40 +02:00
PKEuS f6788c0472 Fixed Token::isKeyword: Actually set this flag to a reasonable value in all code paths 2020-05-19 13:47:25 +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 4948f85460 Visual Studio: Updated solution
- Enable several compiler warnings again
- Let __cplusplus have a reasonable value
2020-05-19 08:35:13 +02:00
PKEuS d6390dbd14 Optimization: Improved performance of simplifyTypedef for code with lots of typedefs
20% performance gain when checking ExtremeTuxRacer sourcecode (with glext.h available)
2020-05-19 08:35:13 +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 330e634937 Revert "TestTrac: Add separate file for black box / integration tests in testrunner"
This reverts commit e895fa4c3f.
2020-05-19 07:53:54 +02:00
Daniel Marjamäki e895fa4c3f TestTrac: Add separate file for black box / integration tests in testrunner 2020-05-18 20:22:00 +02:00
shaneasd 7bfd686f04
Fix #9700 duplicateBranch false positive from missing scope operator :: in ast (#2646) 2020-05-18 19:31:13 +02:00
Daniel Marjamäki 9eda399323 Less strict unknownMacro 2020-05-17 19:12:16 +02:00
Daniel Marjamäki 871cf379d5 ExprData: Better handling of ternary operator 2020-05-15 21:34:52 +02:00
Daniel Marjamäki 76f4fae806 Bug hunting; Started to activate some itc tests for uninitialized variables 2020-05-15 20:58:33 +02:00
Paul Fultz II d123279fc1
Fix issue 9709: ValueFlow: variable value is not known (#2643) 2020-05-14 14:10:32 +02:00
Daniel Marjamäki 4afaff059b Fix replacement in TestExprEngine 2020-05-13 09:56:21 +02:00
Daniel Marjamäki 0c97625aa0 github actions: Fix TestExprEngine 2020-05-13 09:50:25 +02:00
Daniel Marjamäki 046f8eb6c6 ExprEngine: improved handling when lhs/rhs for && has unknown value 2020-05-10 22:50:23 +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
Daniel Marjamäki 02d88cb191 Travis: Run TestExprEngine tests 2020-05-08 12:21:22 +02:00
Daniel Marjamäki 4779cb124e Fixed #9649 (False positive: uninitialized struct member) 2020-05-07 22:27:18 +02:00
Daniel Marjamäki c04a73f6d8 Travis: Improve bug hunting testing 2020-05-07 18:55:22 +02:00
Daniel Marjamäki c0be64d694 bug hunting test: adjust itc test script for older python 3.x that does not allow format strings 2020-05-06 11:55:22 +02:00
Daniel Marjamäki 06cb0e99d1 Tokenizer: Fix syntax error when operator* is called 2020-05-04 21:33:30 +02:00
Daniel Marjamäki 901eb15c93 Add bug hunting test case for CVE-2018-20845 2020-05-03 18:46:59 +02:00
Daniel Marjamäki 168f8b08bc Add bug hunting test case for CVE-2019-13454 2020-05-03 18:33:54 +02:00
Daniel Marjamäki 453a73e740 Add bug hunting test case for CVE-2019-1010315 2020-05-03 18:18:50 +02:00