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21209 Commits

Author SHA1 Message Date
Rikard Falkeborn 4dbf006dc7 Fix severity of c++14 shifts with too many bits (#2213) 
For c++14, shifting a variable with a value larger than or equal to the
number of bits in the variable is undefined. Left-shifting with a value
equal to the number of bits of the variable is implementation defined.

See also trac ticket #9306.
 2019-09-25 20:16:04 +02:00
Daniel Marjamäki 9e76630a4b ExprEngine: Restructure handling of arrays to handle dynamic buffers better 2019-09-25 18:33:21 +02:00
Oliver Stöneberg eac040a00b Various clang-tidy fixes (#2192) 
* use range loops

* removed redundant string initializations

* use nullptr

* use proper boolean false

* removed unnecessary continue from end of loop

* removed unnecessary c_str() usage

* use emplace_back()

* removed redundant void arguments
 2019-09-25 15:25:19 +02:00
Tyson Nottingham ca5f2562fc Fix false negatives in checkIncrementBoolean (#2210) 
Detect incrementing boolean expressions involving pointer dereferences,
array element accesses, etc.
 2019-09-25 13:07:39 +02:00
Sebastian 0fadae78d3 boost.cfg: Add configuration and tests for boost::bind() (#2206) 2019-09-25 12:49:05 +02:00
IOBYTE 12f93b63a8 template simplifier: fix simplification of "< %num% %comp% %num% >" (#2214) 
* template simplifier: fix simplification of "< %num% %comp% %num% >"

* fix test to not fail on 32 bit platforms
 2019-09-25 12:06:29 +02:00
Daniel Marjamäki 0011fb5a36 ExprEngine: Temporary hardcoding for calloc 2019-09-24 22:22:16 +02:00
Daniel Marjamäki 7cf8327b31 ExprEngine: Sign extension in truncateValue 2019-09-24 20:31:12 +02:00
Daniel Marjamäki 0471e74489 ExprEngine: Handle char literals 2019-09-24 20:11:07 +02:00
Sebastian 3b3ff2bb62
misra-test.c: Rule 4.1: Add another compliant test example (#2212) 2019-09-24 20:05:57 +02:00
Daniel Marjamäki 1769af4a6c ExprEngine: Passing variable address to function 2019-09-24 19:53:33 +02:00
orbitcowboy 524c9f5936 wxwidgets.cfg: Added support for more interfaces. 2019-09-24 13:50:52 +02:00
orbitcowboy 3e657e3850 wxwidgets.cfg: Added support for more interfaces. 2019-09-24 13:44:36 +02:00
Daniel Marjamäki ba035074f0 ExprEngine: Extended value truncation 2019-09-24 13:28:14 +02:00
Sebastian 5615da4547
std.cfg: Add configuration and tests for std::bind() (#2207) 
TODO:
Somehow Cppcheck fails to print an ignoredReturnValue message when the
return value is not used (see ticket 
https://trac.cppcheck.net/ticket/9369 )
 2019-09-24 12:16:13 +02:00
orbitcowboy 7ee1c0aa54 wxwidgets.cfg: Added support for more interfaces. 2019-09-24 08:55:55 +02:00
Paul Fultz II 0df4876059 Fix issue 9367: FP knownConditionTrueFalse (#2209) 2019-09-24 08:15:03 +02:00
Daniel Marjamäki c1ff3419a6 ExprEngine: Value truncation 2019-09-23 20:28:12 +02:00
Paul Fultz II 1616282f6b Use fixed number of iterations for valueflow loop (#2205) 2019-09-23 19:35:39 +02:00
Daniel Marjamäki 9025b47f82 ExprEngine: some handling of NULL pointer 2019-09-23 18:10:06 +02:00
Paul Fultz II a903aa7070 Fix issue 9351: false negative: (style) Condition '...' is always true (#2201) 2019-09-23 08:49:04 +02:00
orbitcowboy 32c89345f0 wxwidgets.cfg: Added support for more EVT-macros. 2019-09-23 08:05:59 +02:00
orbitcowboy 0e2c86fade wxwidgets.cfg: Added support for more EVT-macros. 2019-09-23 07:58:52 +02:00
Rikard Falkeborn bb5ac32872 Fix #7031 (improve error message for memory related warnings) (#2204) 
Printout both the locations on double free errors, mismatching
alloc/dealloc and dealloc return error.
 2019-09-22 21:50:02 +02:00
Daniel Marjamäki 28d13e7567 ExprEngine: Implement basic float handling 2019-09-22 21:14:36 +02:00
Rikard Falkeborn df800e35d4 Fix memleak FP with return with parenthesis (#2202) 
* Fix memleak FP with return  with parenthesis

Fix FPs pointed out by daca@home on the following form:

    void* f(void) {
        void* x = malloc(1);
        return(x);
    }

Fix it by only skipping tokens if there is an actual match with a
variable. This allows to remove the special casing of "return;".

* Add testcase with cast
 2019-09-22 19:18:31 +02:00
Daniel Marjamäki 6e17853ea9 ExprEngine: Guess function call return value 2019-09-22 16:40:48 +02:00
Daniel Marjamäki 5c07cfd2e8 ExprEngine: Better handling of pointer aliasing 2019-09-22 15:58:55 +02:00
Daniel Marjamäki ec4b7c1f4b ExprEngine: Better handling of pointers 2019-09-22 10:56:57 +02:00
amai2012 6c9839a585 Validate rules files 2019-09-21 21:42:13 +02:00
Daniel Marjamäki 7d6fd915be ExprEngine: Better handling of compound assignments 2019-09-21 21:15:51 +02:00
Wolfgang Stöggl 52aab1e80c Fix xml syntax in token-matching.xml (#2197) 
The file token-matching.xml contains multiple rules
- Add <rules></rules> xml tags
- Fixes the following xmllint error:
  ./rules/token-matching.xml:10: parser error :
  Extra content at the end of the document
  <rule version="1">
  ^
 2019-09-21 20:41:45 +02:00
amai2012 16f1d8196b Add validateRules target (xmllint) for rules/*.xml 2019-09-21 20:33:48 +02:00
Paul Fultz II c1961cec1c Fix issue 9362: FP: (style) Condition '(v&1)==0' is always false (#2200) 2019-09-21 19:53:54 +02:00
Daniel Marjamäki da91c139d5 ExprEngine: Passing array to function, array data might be overwritten 2019-09-21 19:34:06 +02:00
orbitcowboy 962e7c790b windows.cfg: Added support for macros from minwinbase.h 2019-09-21 15:08:51 +02:00
Rikard Falkeborn 46ac0d79c1 Checkmemleakautovar: fix crash and FP (#2196) 
This fixes crashes found by daca where valueType() is NULL. Also,
somewhat related, it removes warnings when casting to a type that is
unknown to cppcheck, for example, there is no longer a warning for the
following code:

	void* f() {
		void *x = malloc(1);
		return (mytype)x;
	}
 2019-09-21 14:59:54 +02:00
orbitcowboy 5ac0b0e752 qt.cfg: Added support for more macros, found by daca@home. 2019-09-21 14:42:37 +02:00
orbitcowboy f18cf354bd qt.cfg: Added support for Q_DECLARE_INTERFACE()-macro, found by daca@home. 2019-09-21 14:39:14 +02:00
Daniel Marjamäki b2cab003ff ExprEngine: Fix output for arrays 2019-09-21 14:17:16 +02:00
orbitcowboy 860339d8b4 wxwidgets.cfg: Added support deprecated EVT_GRID_CELL_CHANGE()-event macro. 2019-09-21 13:19:04 +02:00
Daniel Marjamäki 3d0d3ec4c5 ExprEngine: handling array initialization with string literal 2019-09-21 11:36:34 +02:00
Tyson Nottingham d6a70d27c7 Fix false negatives in checkAssignBoolToFloat and minor related improvements (#2198) 
* Fix false negatives in checkAssignBoolToFloat

Detect assignments to expressions involving pointer dereferences, array
element accesses, etc.

* Pass assignment token to assignBoolToFloatError

Pass assignment token rather than boolean token to make error reporting
consistent between checkAssignBoolToFloat and checkAssignBoolToPointer,
as well as with other assignment checks in the code base.

* Make checkAssignBoolToPointer check consistent with checkAssignBoolToFloat
 2019-09-21 08:24:54 +02:00
Paul Fultz II 40f1635c35 Fix issue 9361: false positive: (style) Condition 'isdigit(c)!=0' is always true (#2199) 2019-09-21 08:19:54 +02:00
Oliver Stöneberg 65d1e90aa3 deleted methods should be public (#2193) 2019-09-20 21:58:09 +02:00
Oliver Stöneberg b5c598cca4 added missing OVERRIDE usage and removed redundant virtual (#2190) 2019-09-20 21:57:16 +02:00
Oliver Stöneberg 9028b4a81d do not access static methods through instance (#2189) 2019-09-20 21:54:30 +02:00
Ken-Patrick Lehrmann 49b7ef84d9 Fix crashes in checkleakautovar (#2195) 
Crashes found by daca@home
http://cppcheck1.osuosl.org:8000/crash.html

For instance
```
2019-09-20 16:27
ftp://ftp.se.debian.org/debian/pool/main/n/nedit/nedit_5.7.orig.tar.gz
cppcheck-options: -j1 --library=posix --library=gnu --library=motif -D__GNUC__ --check-library --inconclusive --enable=style,information --platform=unix64 --template=daca2 -rp=temp temp
platform: Linux-4.19.0-6-amd64-x86_64-with-debian-10.1
python: 2.7.16
client-version: 1.1.37
cppcheck: head 1.89
head-info: 38dec6a9a (2019-09-20 16:46:57 +0200)
count: Crash! 934
elapsed-time: -11.0 9.0
head results:
Checking temp/nedit-5.7/source/shell.c: __GNUC__=1...

Program received signal SIGSEGV, Segmentation fault.
0x000055555564b862 in CheckLeakAutoVar::ret (this=0x7fffffffb8c0, tok=0x5555582ea9e0, varInfo=...) at lib/token.h:340
340	        return mImpl->mValueType;
 #0  0x000055555564b862 in CheckLeakAutoVar::ret (this=0x7fffffffb8c0, tok=0x5555582ea9e0, varInfo=...) at lib/token.h:340
 #1  0x0000555555651764 in CheckLeakAutoVar::check (this=0x7fffffffb8c0) at build/checkleakautovar.cpp:714
 #2  0x0000555555652b37 in CheckLeakAutoVar::runChecks (this=<optimized out>, tokenizer=0x7fffffffc3a0, settings=<optimized out>, errorLogger=<optimized out>) at lib/checkleakautovar.h:108
 #3  0x00005555556bc833 in CppCheck::checkNormalTokens (this=0x7fffffffce50, tokenizer=...) at build/cppcheck.cpp:732
 #4  0x00005555556bf694 in CppCheck::checkFile (this=0x7fffffffce50, filename=..., cfgname=..., fileStream=...) at build/cppcheck.cpp:542
 #5  0x00005555556c1cb8 in CppCheck::check (this=this@entry=0x7fffffffce50, path="temp/nedit-5.7/source/shell.c") at /usr/include/c++/8/bits/basic_string.h:936
 #6  0x00005555557fd63f in CppCheckExecutor::check_internal (this=0x7fffffffdbd0, cppcheck=..., argv=<optimized out>) at cli/cppcheckexecutor.cpp:884
 #7  0x00005555557fda92 in CppCheckExecutor::check (this=this@entry=0x7fffffffdbd0, argc=argc@entry=14, argv=argv@entry=0x7fffffffdf58) at cli/cppcheckexecutor.cpp:198
 #8  0x00005555555e6358 in main (argc=14, argv=0x7fffffffdf58) at cli/main.cpp:95

DONE
```
 2019-09-20 21:29:17 +02:00
Daniel Marjamäki 6c59957109 ExprEngine: Better handling of conditions 2019-09-20 21:27:51 +02:00
Masafumi Koba 38dec6a9ac Add missing ending tag in XML example (#2187) 2019-09-20 16:46:57 +02:00