Commit Graph

11037 Commits

Author SHA1 Message Date
Daniel Marjamäki da363c7d6f Fixed #9349 (FP ctuuninitvar for pointer dereferenced inside sizeof) 2019-09-12 13:29:52 +02:00
Daniel Marjamäki b8e3d3b982 CTU: Add 'column' 2019-09-12 10:46:33 +02:00
Daniel Marjamäki 8855978f8a Import project: Ignoring paths better 2019-09-12 09:32:24 +02:00
IOBYTE 4e222afa2c template simplifier: ignore alias template definitions with syntax errors (#2169)
Is not allowed to define a type in an alias template definition.

This code:

template<int N>
using A1 = struct B1 { static auto constexpr value = N; };
A1<0> a1;

produces this output:

2: } ;
3: struct B1 { static const auto value = 0 a1 ;

test.cpp:2:57: error: Analysis failed. If the code is valid then please
report this failure. [cppcheckError]
using A1 = struct B1 { static auto constexpr value = N; };
                                                        ^

because it tries to instantiate the invalid alias template definition
and generates garbage code.
2019-09-11 19:31:15 +02:00
Paul Fultz II ba037837c9 Track lifetime across multiple returns
This will now warn when doing something like this:

```cpp
template <class T, class K, class V>
const V& get_default(const T& t, const K& k, const V& v) {
    auto it = t.find(k);
    if (it == t.end()) return v;
    return it->second;
}
const int& bar(const std::unordered_map<int, int>& m, int k) {
    auto x = 0;
    return get_default(m, k, x);
}
```

The lifetime warning is considered inconclusive in this case.

I also updated valueflow to no tinject inconclusive values unless `--inconclusive` flag is passed. This creates some false negatives because library functions are not configured to not modify their input parameters, and there are some checks that do not check if the value is inconclusive or not.
2019-09-11 19:25:09 +02:00
warmsocks a56bc006b7 Fixed a typo in lib/checkother.cpp. Corrected spelling errors found by codespell. (#2170) 2019-09-11 19:21:38 +02:00
Daniel Marjamäki bee30b0ca2 astyle formatting
[ci skip]
2019-09-10 19:42:17 +02:00
Paul Fultz II dc0b3527ad Fix issue 9311: False positive duplicateCondition "same if condition" with pointer inside array of struct (#2166)
* Check for typeOf through an array

* Handle array constructors

* Format

* Fix compile error on gcc 4.8
2019-09-10 19:41:35 +02:00
Paul Fultz II 2595b82634 Fix issue 9348: FP uninitvar for pointer passed to memcpy (#2167) 2019-09-10 19:40:08 +02:00
Paul Fultz II ddb1f1b5ce Try to fix issue 9341: daca crash: isContainerSizeChangedByFunction (#2168) 2019-09-10 19:39:44 +02:00
IOBYTE 639c29eb5c Fix #9338 (Regression: Syntax error on valid C++) (#2156)
* Fix #9338 (Regression: Syntax error on valid C++)

* fix cppcheck warning
2019-09-09 21:46:21 +02:00
Paul Fultz II 9753e18ebd Fix issue 9340: AST broken: endless recursion from '{' (#2161) 2019-09-09 21:35:49 +02:00
IOBYTE 59fdbd8435 Fix #9337 (Syntax error on valid C++) (#2152) 2019-09-07 09:09:04 +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 70cad280ea Fix issue 9319: FP knownConditionTrueFalse related to aggregate initialization of struct (#2147) 2019-09-05 19:36:45 +02:00
Paul Fultz II 9e140831eb Fix issue 9329: FP knownConditionTrueFalse - vector modified by function calls (#2145) 2019-09-05 16:42:26 +02:00
Paul Fultz II e657cf4073 Fix issue 9320: False positive knownConditionTrueFalse related to truncation (#2144) 2019-09-05 15:15:58 +02:00
Daniel Marjamäki a9fda3f488 Clarify redundantVarAssignment warnings 2019-09-04 10:55:41 +02:00
IOBYTE e5220bdf0c make ellipsis ... a single token (#2143)
* make ellipsis ... a single token

Using cppcheck -E to preprocess code with ellipsis produces output that
can't be compiled because ... is split into 3 tokens.

* try to fix addon
2019-09-04 08:07:30 +02:00
Paul Fultz II 1afd56e964 Fix issue 8785: ValueFlow: Track pointer alias
This fixes the issue by making `ProgramMemory` keep track of values based on the conditions.

It also removes the `deadpointer` check since it duplicates the `invalidLifetime` check.
2019-09-03 17:16:15 +02:00
Paul Fultz II 55a78f482b Fix issue 9293: false negative: uninitvar 2019-09-03 06:46:34 +02:00
Paul Fultz II dc201d110d Fix issue 9274: false negative: (error) Buffer is accessed out of bounds (std::string, std::wstring) 2019-09-03 06:43:54 +02:00
Daniel Marjamäki af449779f0 astyle formatting
[ci skip]
2019-09-03 06:43:08 +02:00
Paul Fultz II 88d194214f Fix FP with invalidContainerRef (#2141) 2019-09-03 06:41:35 +02:00
Ken-Patrick Lehrmann 5c172bb55a Fix issue 8897: Huge array initializations (#2135)
* Fix issue 8897: Huge array initializations

iscpp11init would take a lot of time when parsing huge arrays.
This patch add memoization to keeps track that we are parsing an array,
and allows to propagate the result without re-parsing the array for each
of its members.

* Use enum class instead of enum
2019-09-02 20:31:01 +02:00
PKEuS e9f8dddabe Set version to 1.89.99/1.90 dev 2019-09-02 15:44:40 +02:00
Daniel Marjamäki 7d63bdee6f astyle formatting
[ci skip]
2019-09-02 06:59:07 +02:00
Paul Fultz II cb509f1a8b Fix issue 4845: alias to vector element invalid after vector is changed (#2113)
* Try harder to track ref lifetimes

* Dont add lifetimes for references

* Use correct token

* Check for front and back as well

* Improve handling of addresses

* Formatting

* Fix FP
2019-09-02 06:58:09 +02:00
IOBYTE fd403bf7e6 template simplifier: only add recursive instantiation if its arguments are a constant expression (#2138) 2019-09-02 06:51:19 +02:00
Ken-Patrick Lehrmann 005765a561 Clarify valueFlowUninit (#2136)
https://github.com/danmar/cppcheck/pull/2129#issuecomment-526916467
2019-09-02 06:50:56 +02:00
Ken-Patrick Lehrmann 7a75aa084b Fix crash in CheckUninitVar (#2129)
http://cppcheck.osuosl.org:8000/ycmd
```
2019-08-30 23:21
ftp://ftp.se.debian.org/debian/pool/main/y/ycmd/ycmd_0+20181101+git600f54d.orig.tar.gz
cppcheck-options: -j1 --library=posix --library=gnu --library=qt --library=python --library=googletest --library=boost -D__GNUC__ --check-library --inconclusive --enable=style,information --platform=unix64 --template=daca2 -rp=temp temp
platform: Linux-4.15.0-58-generic-x86_64-with-Ubuntu-18.04-bionic
python: 2.7.15+
client-version: 1.1.31
cppcheck: head 1.88
count: Crash! 83
elapsed-time: -11.0 61.2
head results:
Checking temp/ycmd-0+20181101+git600f54d/ycmd/tests/clang/testdata/completion_fixit.cc: __GNUC__=1...

Program received signal SIGSEGV, Segmentation fault.
CheckUninitVar::valueFlowUninit (this=this@entry=0x7fffffffb350) at build/checkuninitvar.cpp:2376
2376	            if (!tok->variable())
 #0  CheckUninitVar::valueFlowUninit (this=this@entry=0x7fffffffb350) at build/checkuninitvar.cpp:2376
 #1  0x00005555556901ac in CheckUninitVar::runChecks (this=<optimized out>, tokenizer=0x7fffffffbcb0, settings=0x7fffffffcd10, errorLogger=<optimized out>) at lib/checkuninitvar.h:68
 #2  0x00005555556a2210 in CppCheck::checkNormalTokens (this=this@entry=0x7fffffffcaf0, tokenizer=...) at build/cppcheck.cpp:730
 #3  0x00005555556a6ee2 in CppCheck::checkFile (this=this@entry=0x7fffffffcaf0, filename="temp/ycmd-0+20181101+git600f54d/ycmd/tests/clang/testdata/completion_fixit.cc", cfgname="", fileStream=...) at build/cppcheck.cpp:540
 #4  0x00005555556aad4c in CppCheck::check (this=this@entry=0x7fffffffcaf0, path="temp/ycmd-0+20181101+git600f54d/ycmd/tests/clang/testdata/completion_fixit.cc") at build/cppcheck.cpp:195
 #5  0x00005555557ef167 in CppCheckExecutor::check_internal (this=this@entry=0x7fffffffd880, cppcheck=..., argv=argv@entry=0x7fffffffdc08) at cli/cppcheckexecutor.cpp:884
 #6  0x00005555557efa9a in CppCheckExecutor::check (this=0x7fffffffd880, argc=17, argv=0x7fffffffdc08) at cli/cppcheckexecutor.cpp:198
 #7  0x00005555555b1d1b in main (argc=17, argv=0x7fffffffdc08) at cli/main.cpp:95
```
2019-09-01 14:51:40 +02:00
PKEuS 9163248e0c Fixed linker errors on Windows 2019-09-01 14:44:03 +02:00
Daniel Marjamäki 4ede39a9b7 1.89: Set version 2019-09-01 12:16:33 +02:00
Daniel Marjamäki c32261c737 Updated copyright year 2019-09-01 11:49:43 +02:00
Ken-Patrick 2c656d6586 Issue 9255: Prevent infinite recursion in parsedecl (#2134) 2019-09-01 11:36:02 +02:00
IOBYTE 3a1aec8850 template simplifier: ignore friend templates (#2122)
* template simplifier: ignore friend templates

friend templates were interpreted as variable templates

* fix cppcheck warning
2019-09-01 09:56:33 +02:00
Ken-Patrick d918f76a0d Remove useless check introduced by 717aa826d8 (#2130)
I was confused by the naming in the forum entry (this/that). This would
be a pointer, there's no point checking for it there.
2019-09-01 09:53:45 +02:00
Ken-Patrick d1c6cb9aa5 Fix issue 9304: boolean type of ternary (#2131)
* Add test cases for 9304

* Fix 9304
2019-09-01 09:51:53 +02:00
Paul Fultz II 121093658d Fix issue 9202: False positive: std::array, size is a constant (#2132) 2019-09-01 09:44:34 +02:00
Ken-Patrick 717aa826d8 Fix false positive in initializationListUsage (#2128)
https://sourceforge.net/p/cppcheck/discussion/general/thread/d5b690ef19/
Check that we warn only about using the initializer list when we assign
the object being constructed.
2019-08-31 12:27:07 +02:00
Paul Fultz II e8435b9ecb Fix issue 9306: Adjust shiftTooManyBitsSigned for C++14 (#2127) 2019-08-31 07:40:57 +02:00
Daniel Marjamäki 1a25d3f9ec astyle formatting
[ci skip]
2019-08-30 18:34:14 +02:00
Paul Fultz II 0b9e823fc8 Fix issue 9305: False positive uninitvar - struct initialized via function (#2123) 2019-08-30 18:32:45 +02:00
Paul Fultz II 2942be53f7 Add more tests for valueFlowUninit (#2124) 2019-08-30 08:41:17 +02:00
Paul Fultz II 03fe6795bf Fix issue 9302: FP uninitvar - struct accessed via pointer (#2121) 2019-08-29 08:38:50 +02:00
IOBYTE 28a95802a2 template simplifier: fix syntax error false positive (an expression can't be a template) (#2115)
https://stackoverflow.com/questions/57590411/cppcheck-syntax-error-with-using-typedef
2019-08-27 06:37:58 +02:00
Daniel Marjamäki a47633c4b9 Added TODO comment 2019-08-26 06:56:29 +02:00
Daniel Marjamäki 4bd9d76a4c Try to make Travis happy 2019-08-25 10:24:13 +02:00
Daniel Marjamäki 82eec11898 Created redundantInitialization id 2019-08-25 09:45:39 +02:00
Daniel Marjamäki 324e5e581b Redundant assignments: Fix false positive when reassignment expression contains assembler 2019-08-24 20:15:52 +02:00