Commit Graph

9412 Commits

Author SHA1 Message Date
Paul Fultz II e657cf4073 Fix issue 9320: False positive knownConditionTrueFalse related to truncation (#2144) 2019-09-05 15:15:58 +02:00
Daniel Marjamäki 068b0ef648 Make Travis happy 2019-09-04 13:38:19 +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
Paul Fultz II 88d194214f Fix FP with invalidContainerRef (#2141) 2019-09-03 06:41:35 +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
Paul Fultz II 255c1062e4 Run test fixtures as seperate tests so they can run in parallel (#2126) 2019-09-02 06:53:35 +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 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
Ken-Patrick 2c656d6586 Issue 9255: Prevent infinite recursion in parsedecl (#2134) 2019-09-01 11:36:02 +02:00
Paul Fultz II 9ef64eb33e Add regression test for issue 9264: FP nullPointerRedundantCheck - pointer alias (#2133) 2019-09-01 09:58:53 +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 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
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
Sebastian a501f65c8c
libcurl.cfg: Add library configuration for libcurl (#2120)
Add curl_easy_*() functions and deprecated functions with warnings.
Add tests and prepare donate-cpu.py
Reference: https://curl.haxx.se/libcurl/c/
2019-08-29 15:11:59 +02:00
Sebastian 8782a5f5e4
lua.cfg: Add Lua C API library configuration with tests (#2119) 2019-08-29 11:38:21 +02:00
Paul Fultz II 03fe6795bf Fix issue 9302: FP uninitvar - struct accessed via pointer (#2121) 2019-08-29 08:38:50 +02:00
orbitcowboy 1994cbbb9c std.cfg: Improved configuration for mbrlen() and extended test cases. 2019-08-27 08:18:19 +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
amai2012 1538248922 Fix syntax in test code example 2019-08-26 20:45:14 +02:00
orbitcowboy c8b7b40cd7 wxwidgets.cfg: Improved support for wxString member functions. 2019-08-25 15:54:50 +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
Daniel Marjamäki 996daaee4e STL: Fixed outOfBounds false positive 2019-08-24 15:40:29 +02:00
Daniel Marjamäki 9d26be8380 Fixed #5259 (Improve check: Uninitialized variable not reported when used in array initialization) 2019-08-24 14:43:35 +02:00
Paul Fultz II 5c488b9519 Fix issue 9190: FP uninitvar for struct member (#2112)
* Fix issue 9190: FP uninitvar for struct member

* Add more test cases

* Fix false negative
2019-08-24 11:27:47 +02:00
Sebastian f25dcd5cda
python.cfg: Add Py_CLEAR(), and add initial test file (#2110) 2019-08-24 10:17:23 +02:00
Daniel Marjamäki 35fb55d76c Fixed #5259 (Improve check: Uninitialized variable not reported when used in array initialization) 2019-08-24 08:01:55 +02:00
Sebastian 7f50642090
wxwidgets.cfg: Add container configuration for wxString (#2109) 2019-08-23 19:10:49 +02:00
versat 50c6af5e5d astyle formatting
[ci skip]
2019-08-23 10:19:29 +02:00
Daniel Marjamäki 7061cc334b RedundantAssignment: Don't warn for initialization with {0} 2019-08-23 08:51:16 +02:00
Thomas Niederberger d122b1c722 Fix issue with __declspec and final (#2107)
* Add missing Qt macros

Add two Qt macros that were missing

* Fix issue with __declspec and final

This change is a bit naive but it fixes the issues I was having when combining __declspec(dllexport) and final classes. Without the fix I get errors along the line of "The code 'class x final :' is not handled. You can use -I or --include to add handling of this code. "
2019-08-23 06:43:02 +02:00
Rikard Falkeborn fd3cb24973 leakNoReturnVar: Don't break early (#2095)
There seems to be no reason for stopping checking the scope if a call to
free() is seen (or fclose() or realloc()), so just continue checking.
Also, if there are multiple arguments, check all, perhaps there are more
memory leaks to warn about.
2019-08-23 06:33:00 +02:00
Paul Fultz II c0a8d628b9 Fix issue 6010: Uninitialized inner struct (#2098)
* Fix issue 6010: Uninitialized inner struct

* Show to root variable that is unitialized

* Warn on pointer dereferences
2019-08-23 06:23:20 +02:00
Rikard Falkeborn 5b5d943976 Remove testfiles.pri (#2106)
qmake is not used to build tests. The only user of testfiles.pri was
removed in 392cda8bce in december 2015.
2019-08-21 06:51:08 +02:00
Sebastian 2c673bd380
qt.cfg: Add container configuration for QStack (inherits from QVector) (#2102) 2019-08-20 20:37:52 +02:00
IOBYTE 4b231c53a4 Fixed #9287 and #9288 (Syntax error on valid C++ code) (#2104) 2019-08-20 20:25:18 +02:00
Sebastian a2a874dbd5
gtk.cfg: Add/enhance function configurations and tests. (#2101)
Add/enhance:
g_once_init_enter(), g_once_init_leave() and g_signal_emit_by_name()
2019-08-20 15:00:30 +02:00
Daniel Marjamäki ef47d3d304 Fixed #9286 (FP: syntax error: { .abc.a = 1) 2019-08-20 13:56:38 +02:00
Sebastian 26dfee58f8
qt.cfg: Add QLinkedList container configuration and some tests. (#2099) 2019-08-20 07:09:43 +02:00
Paul Fultz II 1f747d0b14 Add regression test for 9281 (#2097) 2019-08-19 09:09:07 +02:00
Daniel Marjamäki a5ba82c2d3 Fixed #9260 (--template=gcc does not work correctly with -j) 2019-08-18 16:33:32 +02:00
Daniel Marjamäki d95f29b23a Fixed test/cli 2019-08-18 12:51:32 +02:00
Daniel Marjamäki 2d9a131817 Refactoring: Rename variables. Do not use leading _. Renamed 'col' to 'column' 2019-08-18 12:19:05 +02:00
Daniel Marjamäki 5f2379f3d1 astyle formatting
[ci skip]
2019-08-18 09:07:57 +02:00
Daniel Marjamäki de9b928d98 ErrorLogger: add 'column' in serializer/deserializer 2019-08-18 09:06:40 +02:00
Daniel Marjamäki 016647d1d5 Fix testrunner 2019-08-18 09:02:13 +02:00
Daniel Marjamäki 2471266f12 test/cli: test unmatchedSuppression handling separately 2019-08-17 17:51:48 +02:00
Daniel Marjamäki 1fdae247b3 test/cli: ensure that there is unmatchedSuppression warning 2019-08-17 17:49:22 +02:00
Daniel Marjamäki 530a1a1c68 Remove test/cfg/unmatchedSuppressionTest.c: This testing belongs better in test/cli. 2019-08-17 17:18:44 +02:00
Daniel Marjamäki eaf7224f6a testrunner: Fix assertion error 2019-08-17 15:12:49 +02:00
Daniel Marjamäki a17f2a6f05 Compiling/Installing : The CFGDIR parameter was removed. Use FILESDIR instead. 2019-08-17 10:53:07 +02:00
IOBYTE 04bb6c0d1f template simplifier: fix new daca crashes (#2093) 2019-08-17 07:38:07 +02:00
Paul Fultz II ee7fe3aaa1 Fix FP: Unitialized variable when using a pointer
This fixes the FP in cases like this:

```cpp
void f() {
    bool b;
    bool * x = &b;
    if (x != nullptr)
        x = 1;
}
```

It tracks the indirection of the uninit value in valueflow.
2019-08-17 07:36:41 +02:00
Paul Fultz II 3e0d1141d3 Fix issue 9277: FP: Dont warn for knwon conditions in if constexpr (#2085) 2019-08-16 07:56:39 +02:00
Paul Fultz II 3aef0c9bd3 Fix issue 8715: regression uninitvar not detected (#2092) 2019-08-16 07:48:54 +02:00
Paul Fultz II ef714225bb Use library to track container lifetimes 2019-08-15 21:14:54 +02:00
Sebastian 544bedc6ee
qt.cfg: Add QByteArray container configuration (similar to QString) (#2088)
Reference: https://doc.qt.io/qt-5/qbytearray.html
2019-08-15 16:14:17 +02:00
Paul Fultz II af214e8212 Fix issue 8825: ValueFlow: uninitialized struct member (#2087)
* Pass uninit value across pointers

* Add more testing
2019-08-15 10:44:55 +02:00
Sebastian 81edb23c16
qt.cfg: Fix and enhance Qt container configuration (#2055)
-Add iterator end patterns
-Add/fix size and access functions
-Remove marking QList and QStringList as std-like strings
-QStringList configuration now inherits from QList like it is actually the case
-Add tests
2019-08-15 10:23:05 +02:00
orbitcowboy 4b41f19c87 insecureCmdLineArgs: Added more test cases to ensure 'const'-qualifiers are handled correctly. 2019-08-15 08:45:31 +02:00
Rikard Falkeborn fc1d5b187f leakNoVarFunctionCall: Use AST more (fix #9252) (#2086)
Use the AST a little bit more to improve the check. In order to do so,
rewrite the check to work from the outer function first and then check
the arguments, instead of the other way around.

It also fixes Trac ticket #9252, no warning is now given for

	void* malloc1() {
		return(malloc1(1));
	}

This FP seems to be common in daca results.

It also makes it possible to improve handling of casts, for example
cppcheck now warns about

	void f() {
		strcpy(a, (void*) strdup(p));
	}

But not for

	char* f() {
		char* ret = (char*)strcpy(malloc(10), "abc");
		return ret;
	}

These FP/FN were introduced when the check was switched to use the
simplified token list.
2019-08-14 22:01:40 +02:00
Paul Fultz II 4f76588f98 Fix issue 9275: False positive: Non-local object uses local variable (#2084) 2019-08-14 20:09:33 +02:00
Paul Fultz II 0c1dff5c93 Fix issue 9268: false negative: (style) Condition '...' is always true (#2080)
* Fix issue 9268: false negative: (style) Condition '...' is always true

* Fix copy and paste mistake
2019-08-14 06:34:27 +02:00
Paul Fultz II 13df5b2413 Fix FP with negative index and negated condition (#2081) 2019-08-14 06:32:31 +02:00
Daniel Marjamäki d4549217d0 Renamed safeClassRefMember => unsafeClassRefMember 2019-08-13 20:58:31 +02:00
Daniel Marjamäki 41f8c1b281 Fixed #9271 (Safe classes: Class that store references) 2019-08-13 20:40:48 +02:00
Paul Fultz II c0c6f92221 Fix issue 8431 and 8776: Size of constant string
Fixes these cases:

```cpp
void f(void) {
        const std::string msg="xyz";
        if(!msg.empty()){} // Always true
}
```

And out of bounds access:

```cpp
#include <string>
char fstr1(){const std::string s = "<a><b>"; return s[42]; }
wchar_t fwstr1(){const std::wstring s = L"<a><b>"; return s[42]; }
```
2019-08-12 20:24:16 +02:00
Paul Fultz II 68e8253920 Fix issue 8313 and 7326: Track values of pointer aliases in valueflow 2019-08-12 12:58:53 +02:00
Rikard Falkeborn cd36f8ed0a Fix #9253: leakNoVarFunctionCall: do not warn if freopen opens standard stream (#2076)
This fixes false positives from daca@home where freopen is used to
reopen a standard stream. There is no longer a warning for

	void f() {
		assert(freopen("/dev/null", "r", stdin));
	}
2019-08-12 12:53:59 +02:00
Paul Fultz II aadc404958 Issue 8634: false negative: (style) Condition '...' is always true (#2075) 2019-08-12 11:04:01 +02:00
Paul Fultz II 9aa97cbb95 Fix issue 8296: ValueFlow: value not set in conditional scope in subfunction (#2071)
* Fix issue 8296: ValueFlow: value not set in conditional scope in subfunction

* Refactor condition checkingg

* Make test case TODO
2019-08-11 15:39:37 +02:00
Paul Fultz II bd02ca5ccb Fix issue 9207: Not detected 'always true' and unreachable code 2019-08-08 07:46:47 +02:00
Daniel Marjamäki 9fa1a5a540 astyle formatting
[ci skip]
2019-08-07 08:05:46 +02:00
IOBYTE c6c50567cf Fix #9250 (Regression: crash in gcc testsuite) (#2067)
* Fix #9250 (Regression: crash in gcc testsuite)

* fix cppcheck warning
2019-08-07 08:05:02 +02:00
Ken-Patrick cb0b057595 8706 (#2066)
* 8706

* Add test case for #8706
2019-08-07 08:04:10 +02:00
Paul Fultz II aaeec462e6 Re-enable valueFlowSubFunction (#2063)
* Re-enable valueFlowSubFunction

* Formatting

* Skip ternary operators in subfunctions

* Fix test with iostreams

* Fix FP with multiple parameters
2019-08-05 16:26:32 +02:00
Daniel Marjamäki 20278d9c92 Clarify signConversion warning message 2019-08-05 12:41:08 +02:00
Paul Fultz II ffdd2dc793 Fix issue 8924: Re-enable valueFlowTerminatingCondition 2019-08-05 07:18:06 +02:00
IOBYTE 7ebc9d1b5f Fix #9249 (Syntax error on valid C++) (#2062) 2019-08-04 10:24:44 +02:00
Daniel Marjamäki 510748134f Fixed #9234 (FP unreadVariable - assignment via iterator) 2019-08-04 10:21:16 +02:00
Daniel Marjamäki ce53931d00 Fixed #9251 (False positive: unininitialized variable (multi variables)) 2019-08-03 21:12:34 +02:00
Daniel Marjamäki cdc602e1be Fixed #9137 (Tokenizer: Wrong handling of volatile pointer) 2019-08-03 12:28:50 +02:00
Daniel Marjamäki c03df8e6b4 SymbolDatabase: Improved matchParameter for containers 2019-08-03 10:10:40 +02:00
IOBYTE 2da83df37b Fix #9246 (Syntax error on C++ code) (#2061) 2019-08-03 08:15:06 +02:00
Daniel Marjamäki e66e6549ee SymbolDatabase: Improved ValueType::matchParameter handling of containers 2019-08-02 15:59:22 +02:00
versat 2519a1aed5 gnu.cfg: Add more __builtin_* functions and some tests
Most of them were detected by daca@home
2019-08-02 12:27:46 +02:00
Daniel Marjamäki 41549f4801 Try to fix Cppcheck warning to make Cppcheck happy 2019-08-02 07:57:34 +02:00
IOBYTE 0d1685cd29 Fix #9178 example with instantiation (#2059) 2019-08-02 07:53:39 +02:00
Sebastian 5390588cda
gnu.cfg: Add xfree() (#2051)
It is hard to find good references, one that describes it a bit can
be found here:
https://manpages.ubuntu.com/manpages/bionic/man3/xmalloc.3pub.html

xfree() can be used instead of free().
A check, to verify that a memory leak is found if the memory allocated
via xmalloc() is not freed, has also been added.
2019-08-02 07:41:32 +02:00
amai2012 29596baa92 Refactoring: Convert enum Direction to enum class 2019-08-01 20:56:02 +02:00
Rikard Falkeborn f6726b76ae Fix 9215 (add tilde for missing destructor override warning) (#2057) 2019-08-01 10:43:45 +02:00
amai2012 b0fbbb5aa7 Convert SHOWTIME_MODES to enum class 2019-07-31 22:35:51 +02:00
Daniel Marjamäki 8deb855b41 Fix ValueType::matchParameter for 'const float *' => 'signed long long' 2019-07-31 18:55:55 +02:00
Daniel Marjamäki c51f44ce4c SymbolDatabase: extend usage of ValueType::matchParameter for variable parameters 2019-07-31 18:24:15 +02:00
Daniel Marjamäki 1eb5f2266c ValueType::matchParameter: Fix matching of char** and void* 2019-07-31 16:23:50 +02:00
Sebastian 549452b7b9
qt.cfg: Add container and function configurations for QVector (#2052)
Reference: https://doc.qt.io/qt-5/qvector.html
2019-07-31 13:58:55 +02:00
Daniel Marjamäki a3dc2db77a SymbolDatabase: Use ValueType::matchParameter for variable address parameters 2019-07-31 12:38:36 +02:00
Daniel Marjamäki 039d49bcb1 Improve ValueType::matchParameter for pointers with different types 2019-07-31 12:12:17 +02:00
Daniel Marjamäki 728ac6ae2e SymbolDatabase: Use ValueType::matchParameter for char literal parameters 2019-07-31 09:35:32 +02:00
IOBYTE 9436f72a94 Fix daca dnsdist crash (#2053) 2019-07-31 09:18:43 +02:00
Daniel Marjamäki e58e51ee14 SymbolDatabase::findFunction: For string literal, a std::string parameter is a better match than a void* parameter 2019-07-30 21:20:01 +02:00
Daniel Marjamäki d5d50d9b17 ValueType::matchParameter: Improved constness matching 2019-07-30 09:19:51 +02:00
Daniel Marjamäki 3066c0653c Fixed #8668 (SymbolDatabase: Wrong findFunction match for const pointer argument) 2019-07-29 18:14:23 +02:00
Daniel Marjamäki 607b3daca8 ValueFlow: Improve bailout for structs etc in loops 2019-07-29 15:51:48 +02:00
Daniel Marjamäki a1214348c0 Fixed #8974 (false negative regression about never used variable) 2019-07-29 08:49:19 +02:00
Daniel Marjamäki 602911cfca Activate a TODO test case 2019-07-29 08:06:57 +02:00
Daniel Marjamäki a178d05cc5 Changed TODO test case, I do not see why it should warn. 2019-07-29 07:51:00 +02:00
IOBYTE 07ac6c5f08 Fix ternary operator simplification to accept template parameters. (#2048)
Also simplify decltype of bool and numeric literals in template
arguments.
2019-07-28 21:52:52 +02:00
IOBYTE badc573b80 Fix #9224 (Performance regression in template parsing: 250x - 1200x slower) (#2046) 2019-07-28 09:25:18 +02:00
Daniel Marjamäki e8ec6e6f11 Fixed #8349 (Noisy nullPointerRedundantCheck) 2019-07-27 20:03:06 +02:00
Daniel Marjamäki 1c75257212 Token::hasKnownIntValue: Fix when there is one possible int value and one known BUFFER_SIZE value, it should return false. 2019-07-27 08:25:07 +02:00
Rikard Falkeborn f95d193e22 Fix #8282 (memleak FP when returning std::pair) (#2039) 2019-07-26 07:03:58 +02:00
Paul Fultz II ee28a45db4 Fix issue 9235: new crash in astutils isVariableChanged from endless recursion (#2040) 2019-07-26 07:03:21 +02:00
Paul Fultz II b049fd9303 Improve propogation of lifetimes of function arguments
This will now warn for cases like this:

```cpp
int* f(int * x) {
    return x;
}
int * g(int x) {
    return f(&x);
}
````
2019-07-26 07:02:07 +02:00
Rikard Falkeborn a69a570505 Fix FP leakVarNotUsed with freopen() and stdin (#2034)
One usecase for freopen() is to redirect input and output streams to
files. For that, the return value is not needed.
2019-07-25 21:09:23 +02:00
Paul Fultz II 744a94ad5a Fix issue 9231: FP constParameter - argument passed parent ctor (#2032) 2019-07-24 20:59:58 +02:00
IOBYTE 999d2f797c Fix #9225 (Crash on valid C++14 code) (#2031)
* Fix #9225 (Crash on valid C++14 code)

This only fixes the crash. Specialization of nested templates is still
broken.

* fix cppcheck warnings

* fixed another cppcheck warning
2019-07-24 19:20:19 +02:00
Daniel Marjamäki bbcffce529 Fixed #9062 (False positive "condition is always true") 2019-07-24 19:16:35 +02:00
Daniel Marjamäki e11dcc609b Fixed #7758 (Function array is seen as Uninitialized) 2019-07-24 18:20:23 +02:00
Daniel Marjamäki 7c0b011c05 Fixed #9230 (Improve check: integer conversion overflow in return) 2019-07-24 16:17:52 +02:00
Daniel Marjamäki 2da75d5af4 Split up Cppcheck attribute. low and high values can be specified separately and they can be used for variables also. 2019-07-24 15:08:26 +02:00
Daniel Marjamäki cab9f61b79 safe checks: Handle float parameters 2019-07-24 12:09:13 +02:00
Daniel Marjamäki 10be2a1941 Safe checks: container parameters 2019-07-24 11:39:35 +02:00
Daniel Marjamäki 8959c5a9d0 Rename valueFlowAllFunctionParameterValues => valueFlowSafeFunctionParameterValues 2019-07-24 10:57:35 +02:00
Paul Fultz II bb52a63c4e Add check for const variables
When a local reference is declared, this will check if that local reference can be declared as `const`.
2019-07-24 09:59:01 +02:00
Paul Fultz II 3ec3bd52e0 Fix FP when using a pointer to a container (#2029) 2019-07-24 00:04:49 +02:00
Paul Fultz II ab0fcc7640 Fix issue 9216: reset() method confusion (#2025)
* Fix issue 9216 with smart pointer reset

* Check for arrow
2019-07-23 22:45:58 +02:00
Paul Fultz II 60b670babd Fix issue 9219: False positive, returnDanglingLifetime (#2026)
* Check for pointer deref for container methods

* Formatting
2019-07-23 21:59:05 +02:00
IOBYTE 5ad5cfcc29 Fix #9217 (Regression: Memory explodes in simplifyTemplateAliases) (#2021)
* Fix #9217 (Regression: Memory explodes in simplifyTemplateAliases)

* fix use after free when nothing was copied
2019-07-23 21:28:24 +02:00
Daniel Marjamäki 4fb6c27276 Modernize: Use enum class 2019-07-23 14:29:02 +02:00
Daniel Marjamäki c8bc88e7e2 Fix compiler error 2019-07-23 13:14:08 +02:00
Rikard Falkeborn 8cd1d5a47d Use library for memleak checks (#2002)
* Use library for memleak checks

Change memleakOnRealloc and leakReturnValNotUsed to use library
configuration instead of hardcoding "realloc".

In order to do so, some care needs to be taken when matching for a
reallocation function, since it can no longer be assumed that the input
to be allocated is the first argument of the function. This complicates
getReallocationType() and checkReallocUsage() but is necessary in order
to handle for example freopen() properly.

Also, refactor memleakOnRealloc check to reduce duplicated code when
checking "a" and "*a". When doing so, extending the check to look for
arbitrary number of "*" can be done for free (just change an if
statement to a while statement). Most likely, this is an unusual case in
real world code.

* Remove redundant whitespace in Token::Match()

* Run on simplified checks

* Fix cppcheck warning
2019-07-22 10:37:36 +02:00
Rikard Falkeborn 06337cedf5 Run more tests on full token list (#2020)
Since all checks are run on the full token list and not the simplified
one, run the tests on the full token list as well.
2019-07-22 10:26:55 +02:00
Rikard Falkeborn abea580b78 Fix FP memory leak with unknown function call in condition (#2012)
* Fix FP memory leak with unknown function call in condition

This was introduced in 8513fb81d2 when
fixing memory leaks for global variables allocated in condition. The
refactored code had an inconsistency where c and c++ code behaved
slightly differently when `var` is NULL. This seemed to not have an
impact as the code was written prior to 8513fb81d2,
but when the same code was used for conditions, FPs were introduced.

The introduced FPs were memleak warnings when there should have been an
information message about missing configurations for code like

	void f() {
		char *p = malloc(10);
		if (set_data(p)) {}
	}

Fix this by always returning true if varTok->Variable() is NULL for
both c and c++ code.

* Improve function name
2019-07-18 15:23:19 +02:00
Paul Fultz II a08a9c1349 Switch to use lifetime analysis for iterators and pointers to invalid containers
This will diagnose more issues such as:

```cpp
void f(std::vector<int> &v) {
    auto v0 = v.begin();
    v.push_back(123);
    std::cout << *v0 << std::endl;
}
```
2019-07-18 10:56:44 +02:00
Daniel Marjamäki 421a8da6a8 Try to clarify signConversion message 2019-07-17 22:41:24 +02:00
Daniel Marjamäki d11d6f112e Detect shadowed arguments 2019-07-17 17:08:42 +02:00
Daniel Marjamäki 90a215af0e Rephraze performance message. /would be faster/could be faster/ to indicate that Cppcheck is not _sure_ that it would be faster 2019-07-17 16:06:10 +02:00
Daniel Marjamäki 64ef879ebf Fix syntaxError for struct initialization 2019-07-17 15:21:17 +02:00
Daniel Marjamäki 9973db3a71 Modernize: Use enum class for Library::Action and Library::Yield 2019-07-17 11:39:30 +02:00