Commit Graph

12374 Commits

Author SHA1 Message Date
Daniel Marjamäki 4094274723 TestClangImport: Fix tests 2020-11-01 11:33:01 +01:00
Daniel Marjamäki 5aab1f9692 Clang import: Improved handling of structs 2020-11-01 09:12:58 +01:00
Daniel Marjamäki 226e996e46 Clang import: Improved handling of empty structs/classes 2020-11-01 08:44:38 +01:00
Daniel Marjamäki 7804b28e70 AST: Tweaked debug output 2020-10-31 18:57:48 +01:00
Daniel Marjamäki 597a6eb99c Clang import: Fix Variable::mTypeStartToken for const argument 2020-10-31 17:43:36 +01:00
Daniel Marjamäki 376860f796 AST: Adjust AST for variable declaration 'char var[] = str;' 2020-10-31 17:05:42 +01:00
vilarion bc5ec38149
Fix #9806 (False positive: template function can be static) (#2868)
* Include detecting variadic template functions by matching against endTok instead of startTok.
* Add argument count check for variadic (template) member functions.
2020-10-31 10:02:15 +01:00
shaneasd a623168942
fix passedByValueError on enums (#2869) 2020-10-30 18:32:35 +01:00
Daniel Marjamäki e044d6e219 Clang import: fixed AST for 'return new S()' 2020-10-29 21:43:35 +01:00
Daniel Marjamäki 9ed4dc4199 Clang Import: Fix AST for 'new S;' 2020-10-29 20:52:09 +01:00
Rikard Falkeborn de19dc9e3e
Fix #8327 (Memleak with mmap return value check) (#2864)
Also fix a broken test case related to checking the return value -1
where socket was not defined in the library used in the tests.

This was tested running test-my-pr with 500 packages. The difference was
six fewer FPs.
2020-10-29 13:17:33 +01:00
Daniel Marjamäki 16f4f198eb Clang import: handle DefaultStmt 2020-10-29 09:48:35 +01:00
Daniel Marjamäki 40156365b8 Adjust cppcheck AST debug output a little bit. Write location for each AST tree 2020-10-28 21:41:21 +01:00
Daniel Marjamäki 4eb829933e Tokenizer: Fixed unwanted unknownMacro warning for decltype 2020-10-27 09:08:13 +01:00
Daniel Marjamäki 34c8334882 Fixed #9737 (False positive: unreadVariable) 2020-10-25 20:32:45 +01:00
Daniel Marjamäki 05514950af astyle formatting
[ci skip]
2020-10-25 07:12:30 +01:00
miltolstoy d55874ec37
checkunusedvar: handle initialization list (#2836) 2020-10-25 07:11:45 +01:00
Daniel Marjamäki eb2c0bb6ee Fix TestExprEngine 2020-10-24 22:53:15 +02:00
Daniel Marjamäki 3876b601d5 Fixed #9476 (Tokenizer: report unknown macro) 2020-10-24 22:12:10 +02:00
Rikard Falkeborn d7a8e25d92
Fix #9647: Set correct enum value (#2856)
* Tokenize: Set varId for variables in enum

Set varIds in enum values. It was previously disabled in 5119ae84b8
to avoid issues with enums named the same as global variables. Take care
to only set varids to variables used to set the value of an enumerator,
not the enumerator itself. This is somewhat complicated by the fact that
at the time this happens, astOperand1(), astOperand2(), astParent() etc
are not set. The current implementation is not perfect, for example in
the code below, y will not have a varid set, but x and z will. This is
deemed sufficient for now.

            int x, y, z;
            enum E { a = f(x, y, z); };

* Fix #9647: Value of enums with variables as init values

C++ allows enum values to be set using constexprs, which cppcheck did
not handle before. To solve this, add a new pass to valueflow to update
enum values after global consts have been processed. In order to do so,
I moved all settings of enum values to valueflow. After setting the enum
values, we need another call to valueFlowNumber() to actually set users
of the enums.

There is still room for improvements, since each pass of
valueFlowGlobalConstVar() and valueFlowEnumValue() only sets variables
that are possible to set directly, and not if setting the value of a
variable allows us to set the value of another. For example

	constexpr int a = 5;
	constexpr int b = a + 5;
	enum E { X = a };
	constexpr E e = X;

Here both b and e will not have their values set, even though cppcheck
should be possible to figure out their values. That's for another PR
though.

This was tested by running test-my-pr.py with 500 packages. The only
difference was one error message in fairy-stockfish_11.1, where cppcheck
now printed the correct size of an array instead of 2147483648 which I
assume is some kind of default value. In that package, using a constexpr
when setting enum values is common, but as mentioned, there was no
change in the number of warnings.
2020-10-22 07:45:04 +02:00
Paul Fultz II 64638d82bb
Fix issue 9945: FP: containerOutOfBounds (#2845) 2020-10-22 07:41:52 +02:00
Daniel Marjamäki 33844b28ab Another fix for the crash 2020-10-22 06:59:13 +02:00
Daniel Marjamäki bcc7c5cd50 Use astIsPointer to avoid crashes 2020-10-22 06:55:48 +02:00
Ken-Patrick Lehrmann e4a54a24db
Fix regression in CheckCondition (#2854)
Introduced by e2a81a382f.
2020-10-20 07:56:41 +02:00
Rikard Falkeborn 2624d791e6
Symboldatabase: Don't set unknown enum values (#2852)
Previously, if an enum value was set to a value unknown to cppcheck, the
next enum value would erroneously be set to the last set value plus one
(or zero, if no enum value had been set before). This partially fixes
Trac ticket #9647, in the sense that it no longer sets wrong values for
these enum values. Further improvements to this would be to set the
correct values instead. It also fixes the false positive mentioned in the
comments in the ticket.
2020-10-18 20:41:36 +02:00
Rikard Falkeborn 33739d23aa
Fix #9941: Return value type of library functions returning unsigned (#2848)
Fix return value types of library functions returning unsigned.
Previously, the valueType of auto x = f() would be signed even if f()
was specified to return an unsigned type.

This fixes #9941, which is a regression in cppcheck 2.2 compared to 2.1.
The regression was introduced in 32df807b22.
2020-10-16 07:56:31 +02:00
Armin Müller 08cef9e815
Typos found by running "codespell" (#2846) 2020-10-15 19:24:13 +02:00
Daniel Marjamäki f1ce5a9101 Fixed #9929 (False positive: suspicious semicolon after macro) 2020-10-09 20:34:20 +02:00
Paul Fultz II 047c3ed6ba
Fix issue 9935: FP: knownConditionTrueFalse value flow doesn't account for virtual functions (#2839) 2020-10-09 17:21:27 +02:00
Daniel Marjamäki 586ddf74f1 Clang import; fixed ast for function call with multiple arguments 2020-10-09 07:54:16 +02:00
Daniel Marjamäki 65721dd7a9 Bug hunting; Better handling of constant 2020-10-08 17:24:35 +02:00
Daniel Marjamäki 64608f4e95 clang import; fix symbol database for 'struct Fred { int a; }; int b; void f(int c, int d) { int e; }' 2020-10-06 19:06:10 +02:00
Paul Fultz II 372161c89b
Fix issue 9939: False positive: Reference to temporary returned (static variable) (#2840) 2020-10-06 09:16:54 +02:00
Daniel Marjamäki 67cc1776d5 Clang import: fixed return type 2020-10-04 20:02:19 +02:00
Daniel Marjamäki e3ab688597 Clang import: Fix syntax tree for 'case 1' 2020-10-04 19:33:28 +02:00
Daniel Marjamäki c3517924d0 Clang import testing: Compare AST 2020-10-04 11:27:31 +02:00
Daniel Marjamäki b052843655 exprengine: Use and tweak ExprEngine::ArrayValue::MAXSIZE 2020-10-04 11:21:13 +02:00
Daniel Marjamäki 0e32e19184 daca: update WRONG_DATA interface 2020-10-03 15:36:02 +02:00
Daniel Marjamäki 2e20ee9e39 set version 2.2.99 2020-10-03 13:54:17 +02:00
Daniel Marjamäki 17e562a87f astyle formatting
[ci skip]
2020-10-03 11:02:11 +02:00
Paul 828a5e2326 Fix issue 9930: valueFlowLifetime hang 2020-10-03 11:01:53 +02:00
Daniel Marjamäki c373be0b16 2.2: Update versions 2020-10-03 10:47:35 +02:00
Daniel Marjamäki 8d20d8afb5 Update Copyright year 2020-10-03 09:15:56 +02:00
Daniel Marjamäki 6de91d6386 Fixed #9707 (False positive: unreadVariable, union) 2020-10-02 20:22:22 +02:00
Daniel Marjamäki 63e08689c1 Fix Cppcheck warning 2020-10-02 19:35:24 +02:00
Daniel Marjamäki ea3a9d658a Suppressions: Add special case for backwards compatibility. suppression comment after a {. 2020-10-02 18:56:26 +02:00
Daniel Marjamäki 1251d35ba4 Fix SymbolDatabase for 'extern const char ( * x [ 256 ] ) ;' 2020-10-02 08:25:43 +02:00
Daniel Marjamäki a39e5835d4 Fixed #9925 (False positive: Redundant pointer operation in macro) 2020-09-29 18:27:07 +02:00
Daniel Marjamäki 67b1698752 daca: suppress variableScope warnings in C code as that is usually suppressed in real world. It should make the daca output more relevant. 2020-09-29 17:20:19 +02:00
Daniel Marjamäki bf3833dad5 Avoid constStatement false positives for 'foo() || x=5'. Found in daca@home. 2020-09-29 13:35:39 +02:00
Daniel Marjamäki f956dee58a Tokenizer: Fixed simplification of parentheses in expression 'a=(b,c);' 2020-09-29 12:06:30 +02:00
Daniel Marjamäki 31c800e19e Fixed false positive: suspicious operator ',' seen in daca@home 2020-09-29 11:32:48 +02:00
Daniel Marjamäki ad9b2741cd varid: set varid for 'extern const char (*x[256]);'. This is a partial fix for #9922 2020-09-29 10:53:20 +02:00
Daniel Marjamäki d901edd4af Avoid clarifyCalculation warning for 'x % 16 ? 1 : 0' expression. Fixes FP seen in daca@home. It seems likely that the order is understood otherwise the ternary calculation could easily be simplified away. 2020-09-29 08:39:21 +02:00
Daniel Marjamäki e32ccb591b Fixed clarifyCalculation fp for 'a % b ? "a" : "b"'. seen in daca@home. 2020-09-29 08:29:23 +02:00
IOBYTE 4e4108dc8b
fix daca insighttoolkit crash in template simplifier (#2826)
Don't count deleted instantiations in the recursive count.
I can't reduce the daca code because creduce requires a preprocessed
file to reduce and the problem doesn't show up when the file is
preprocessed with cppcheck.
There is no test because I couldn't reduce the problem files.

Co-authored-by: Robert Reif <reif@FX6840>
2020-09-28 22:51:13 +02:00
Daniel Marjamäki bf236e91d7 Fixed #9918 (False positive: autoVariable pointer is NULLed later) 2020-09-28 22:48:57 +02:00
Daniel Marjamäki 8395522390 Fixed #9919 (False positive: clarifyCalculation for code: flags & ZRL_EOL_NUL ? '\0' : '\n') 2020-09-28 19:18:34 +02:00
Daniel Marjamäki 4c9db17742 Tokenizer: replace all or none of the alternative tokens in a translation unit 2020-09-28 19:01:31 +02:00
Daniel Marjamäki fa42d8c49c Fixed #9920 (Tokenizer: The keyword is not replaced, leads to false positive) 2020-09-28 16:35:50 +02:00
Daniel Marjamäki 84b8f32fd4 daca: group warnings for prohibited functions 2020-09-27 21:42:07 +02:00
Daniel Marjamäki 2748201d73 Fixed #9782 (Segmentation fault due to broken AST) 2020-09-27 20:41:09 +02:00
Daniel Marjamäki ba84303501 Fixed #9680 (false positive: style: Variable 'x' is assigned a value that is never used with smart pointers) 2020-09-27 19:15:15 +02:00
Daniel Marjamäki 3b39433e21 Fixed Cppcheck warnings 2020-09-26 22:30:59 +02:00
Daniel Marjamäki 7bb82c5df7 Fixed #9901 (False positive: variable is assigned value that is not used 'if (--N == 0)') 2020-09-26 22:13:05 +02:00
Daniel Marjamäki 0ec77879ea Fix crash in createAST when checking wiggle in daca@home 2020-09-26 19:22:24 +02:00
Daniel Marjamäki 5578b09452 More fixing for #9914. New warning id and warning message when variable expression is explicitly hidden. 2020-09-26 13:49:47 +02:00
Daniel Marjamäki 05b0a0f970 Make duplicateAssignExpression warnings inconclusive for 'x&&false' etc. (#9914) 2020-09-26 10:50:58 +02:00
Paul Fultz II 887b40e08b
Fix issue 9916: False positive: duplicateAssignExpression when it's checked if variables have initial value later (#2825) 2020-09-26 10:31:40 +02:00
Daniel Marjamäki 5856fef83b Fixed #9914 (False positive: knownArgument for 'x && false') 2020-09-25 20:27:16 +02:00
Daniel Marjamäki bbd3a992b8 Fix output when note contains 2020-09-25 19:04:22 +02:00
Daniel Marjamäki 485153c930 Limit variableScope check. Do not check C code if all local variables are declared at function level. 2020-09-25 08:34:47 +02:00
Daniel Marjamäki 093ff58f5f Fix crash in cbmc detected with daca@home 2020-09-24 20:48:26 +02:00
Daniel Marjamäki 801cc8d331 Fixed knownArgument false positive for pointer 2020-09-24 19:48:20 +02:00
Daniel Marjamäki c08e1a9a94 Fix knownArgument false positive when sizeof is used 2020-09-24 19:43:39 +02:00
Daniel Marjamäki 514b7f4da4 Fixed #9906 (False positive: constParameter (function pointer)) 2020-09-23 22:10:47 +02:00
Paul Fultz II d9eacaecbb
Fix issue 9842: ValueFlow: wrong handling of ?, seems to think that the whole expression is a condition (#2821) 2020-09-23 07:45:03 +02:00
Oliver Stöneberg 2e24cc1434
checkother.h: added missing newline in classInfo - fixes tests (#2818) 2020-09-21 21:44:46 +02:00
Daniel Marjamäki 107ee57e7a Fixed #9909 (False positive: knownArgument for calculation 'self->maxsize * sizeof(intptr_t)') 2020-09-21 20:02:55 +02:00
Daniel Marjamäki bca3605f77 astyle formatting 2020-09-21 19:48:04 +02:00
Oliver Stöneberg 7189b303ae
fixed some modernize-loop-convert clang-tidy warnings (#2815) 2020-09-21 19:30:47 +02:00
Paul Fultz II 7b6d3f8061
Fix issue 9907: False positive: knownEmptyContainer after function call with :: (#2814) 2020-09-20 22:37:28 +02:00
Daniel Marjamäki 730b95331e Fixed #9905 (False positive: known argument 'header.length()') 2020-09-20 20:17:10 +02:00
Daniel Marjamäki c563944fdd astyle formatting 2020-09-20 20:14:30 +02:00
Paul Fultz II 857722f859
Fix issue 9711: FP knownConditionTrueFalse for variable modified via pointer (#2813) 2020-09-20 14:27:09 +02:00
Paul Fultz II c2e8051196
Fix issue 9904: False positive: duplicateCondition when modifying variable in lambda (#2811) 2020-09-18 07:44:26 +02:00
Paul Fultz II e5d0ffdbe7
Fix issue 9900: False positive: Returning lambda that captures local variable 'x' that will be invalid when returning. (#2809) 2020-09-17 08:33:52 +02:00
Paul Fultz II 782684a7cc
Fix issue 9530: False positive: Reference to temporary returned when using initializer lists (#2796) 2020-09-17 08:33:16 +02:00
Paul Fultz II 11c99d7387
Fix issue 9880: False positive: danglingLifetime (#2810) 2020-09-17 07:23:38 +02:00
Paul Fultz II ebbff08932
Fix issue 9899: False positive: Non-local variable will use object that points to local variable (#2808) 2020-09-15 07:11:52 +02:00
Daniel Marjamäki 3459f0da32 Fixed #9812 (False positive; syntax error 'using array_p = const array_t *;') 2020-09-14 21:59:58 +02:00
shaneasd 53a0760fdf
Improve ast generation for templated function parameters (#2803) 2020-09-14 18:44:50 +02:00
Paul Fultz II a42976d656
Fix issue 9898: false positive: knownConditionTrueFalse (#2806) 2020-09-14 18:43:11 +02:00
Daniel Marjamäki 4dd85cfbe0
Merge pull request #2802 from rikardfalkeborn/9228-fix-fn-with-realloc-and-null-assignment
Improve memleakOnRealloc with assignment to NULL
2020-09-14 11:04:29 +02:00
Paul Fultz II 94850fec3f
Fix issue 9897: False positive: nullPointerRedundantCheck (#2805) 2020-09-14 09:17:29 +02:00
Paul Fultz II bb7164171c
Fix issue 9894: ValueFlow: wrong known value below while with assignment (#2804)
* Fix issue 9894: ValueFlow: wrong known value below while with assignment
2020-09-14 08:03:25 +02:00
Rikard Falkeborn 791051ced0 Fix #9228 (FN common realloc mistake with assignment of NULL)
Do not match for assignments with NULL.
2020-09-13 21:49:49 +02:00
Rikard Falkeborn da8ad9ce19 memleakOnRealloc: Don't warn if pointer is NULL in condition 2020-09-12 18:48:23 +02:00
Paul be900873cc FIx issue 9895: ValueFlow: Wrong known value below function call with reference parameter 2020-09-11 16:03:57 -05:00
Daniel Marjamäki e03a8e1dc1 Fixed #9892 (Crash: endless recursion in Token::typeDecl for expression 'auto combo = widget->combo = new Combo{};') 2020-09-11 21:29:48 +02:00