Commit Graph

304 Commits

Author SHA1 Message Date
Georgy Komarov 3944e70e02
misra.py: Treat enum constants as constant known at compile time (#2823)
C89 standard defines enum members as enumeration contants at ch.
6.4.4.3, and they are always known at compile time.

This commit fix false positives for rule 18.8 (and possible other rules
that check "constentess") with enumeration members.

Fix Trac#9913
2020-09-25 21:02:34 +02:00
Daniel Marjamäki 687b44dbb7 Token: add flag for splitted variable declaration with initialization 2020-09-09 16:22:47 +02:00
Daniel Marjamäki 6e4085f3d8 Misra: Write 12.3 warnings in structs/classes 2020-09-08 09:29:57 +02:00
Daniel Marjamäki 9a943e7616 misra: rewrote rule 12.3 2020-09-06 11:33:37 +02:00
Georgy Komarov 4738da3d69
misra.py: Fix R12.3 FP on calling functions in function arguments (#2778) 2020-09-05 07:53:56 +02:00
Georgy Komarov e21bdb985c
misra.py: Fix 12.3 FP for variables defined in headers (#2773)
When we include the header file with variables definitions, Cppcheck
will write `variables` entries with line numbers from the header to the
dump file.

If the line number in the header file and the source file are equal,
misra.py performs an additional check what leads to false positives.

Minimal example that demonstrates the problem:

`misra_fp.c`:
```c
void test_12_3_fp(void)
{
    //Initialize the events queue
    QEQueue_init(&me->deferred_event_queue, me->deferred_events_queue_buf, Q_DIM(me->deferred_events_queue_buf));
}
```

`misra_fp.h`:
```c

static const uint32_t timer_max_blocking_call_us;
```

This commit closes trac ticket 9874.
2020-09-04 20:58:32 +02:00
Daniel Marjamäki c6d2e0fae1 Fixed #9830 (Addons should return 0 when success) 2020-08-29 07:44:32 +02:00
Georgy Komarov 3bae716fd4
misra.py: Fix 20.7 false positive for multi-character arguments
See: https://trac.cppcheck.net/ticket/9633#comment:3
2020-08-08 13:03:19 +03:00
Georgy Komarov dc1faa71ed
misra.py: Fix false negatives in string concatenation for rule 20.7
This will fix Trac#9633
2020-07-24 07:15:40 +03:00
Georgy Komarov fc504ed6c3
misra.py: Fix false positives on macro expansion
This will fix Trac#9634
2020-07-21 20:03:04 +03:00
Richard A. Smith 41a846d8a7 misra.py: Squelch duplicate violation messages
When checking multiple files if the same violation is encountered from
an included file then the violation is both displayed and counted in the
error summary.

Track each violation by location and error number and if the violation
has been previously encountered then do not report it again.
2020-07-19 08:42:35 -03:00
Carl-Oskar Larsson 2abf542838
Misra severity (#2674) 2020-06-08 15:58:17 +02:00
Georgy Komarov 90550d24c4
misra.py: Fix crash on volatile macro argument (#2654) 2020-05-21 08:34:28 +02:00
Georgy Komarov 61926ed7c3
misra.py: Fix false positive for rule 15.6 (#2631) 2020-05-07 16:54:27 +02:00
felwolff b65d72aeb6
misra.py: Fix 5.1 and 5.2 FP for c99 (#2625) 2020-04-28 07:18:54 +02:00
Georgy Komarov 20b02bff30
misra.py: Fix 20.7 FP for struct members (#2624)
This will close Trac#9673
2020-04-27 09:10:58 +02:00
amai2012 3be79aee98
Cure invalid constant
https://lgtm.com/projects/g/danmar/cppcheck?mode=list poined out this "implicit string concatenation"
2020-04-14 15:47:44 +02:00
Georgy Komarov 4e5a8fac4a
misra.py: Handle stdint.h essential types (#2555)
Add stdint.h essential types to misra.py checks. This will fix false
negatives for rules 10.6 and 10.8.
2020-02-27 11:28:48 +01:00
Armin Müller 75b1ade316
Typos found by running "codespell" (#2542) 2020-02-17 18:28:58 +01:00
Georgy Komarov 9155f3a83a
misra.py: Check switch-clauses in R15.3 (#2538)
* misra.py: Check switch-clauses in R15.3

* break on violation
2020-02-16 00:03:18 +01:00
Georgy Komarov 2138091fa3
misra.py: Fix rule 20.2 false negative (#2534) 2020-02-12 17:11:56 +01:00
Georgy Komarov 403a61bc11
misra.py: Handle spaces in directive arguments (#2532) 2020-02-11 20:59:11 +01:00
Daniel Marjamäki 099dd57eb8 Fixed #9625 (false negative: misra-c2012-13.1) 2020-02-11 18:00:41 +01:00
Georgy Komarov 583d5e5958
misra.py: Add standard library functions for C90 and C99 (#2524)
This is required to add additional analysis for some MISRA rules.

This commit improve R21.1 check and close trac ticket 9603.
2020-02-11 11:10:54 +01:00
Georgy Komarov 0ff23dbd0b misra.py: Handle more cases in Rule 20.3 check (#2529)
This commit add two additional cases for rule 20.3:

1. Support violations in the following format: `#include file.h`
2. Better multiline include directives and inline comments support.

See added test cases for examples.
2020-02-10 08:56:26 +01:00
Georgy Komarov f438cc6105
misra.py: Fix rule 21.1 false positives (#2526)
According MISRA standard, rule 21.1 should hanlde define/undef
directives only. There are no mentions of other C identifiers in the
standard document.
2020-02-09 16:22:26 +01:00
Georgy Komarov 6d4eff46be
misra.py: Fix false negative for rule 20.4 (#2528)
Define different sets of reserved keywords for C90 and C99.
This will fix false negative for compliant example, defined in MISRA
document, and close trac 9506.
2020-02-09 10:46:13 +01:00
Georgy Komarov 5eaf437c44
misra.py: Fix R5.4 false positives with C99 (#2516)
* parser: Parse standards node at start event

This required, because we can loose data at the end event.

* misra.py: Fix 5.4 standard-dependent error

By default Cppcheck use C11 standard, so this change fix false positives
for rule 5.4 with C99.

* travis: force --std=c89 for misra.py
2020-01-31 23:38:41 +01:00
Georgy Komarov 86d0f62d36 misra.py: Fix 12.3 FP in initializer lists (#2489)
See: trac 9581
2020-01-15 09:55:59 +01:00
mlambacher 3ada7672f3 Fix potential typo: use token.next.linenr instead of token.linenr (#2483)
Also make use of defaultdict to minimize risk of similar typos in the future and to clean up the code
2020-01-09 19:31:18 +01:00
elfel19 a288ea3c1f improve misra analysis perf for misra_5_4, misra_5_5, misra_20_1 (#2329)
fix bad indent
2020-01-08 06:54:43 +01:00
Daniel Marjamäki 33c8b71467 Revert "addons; import cppcheckdata from local folder"
This reverts commit 05b96d42e9.
2019-12-30 17:30:17 +01:00
Daniel Marjamäki 05b96d42e9 addons; import cppcheckdata from local folder 2019-12-30 09:13:04 +01:00
Georgy Komarov d977761e76 addons: Reduce memory consumption (#2395)
* addons: Reduce memory consumption

Parse dump files incrementaly using ElementTree.iterparse. Clean unused
resources during parsing.  This method is explained in following
article: https://www.ibm.com/developerworks/xml/library/x-hiperfparse/

Memory consumption was reduced about 30% (measured with mprof),
execution time increased about 5% (measured with time utility).
More description available in PR.

* Switch to lxml and update iterparse routines

Use lxml module instead default xml.etree. Lxml provides convenient
wrappers around iterparse method that accepts `tag` argument. That
easer incremental parsing routines to select specific tags from roottree
like `dump` and `dumps`.

Element.clear() method was replaced by `lxml_clean` because lxml
keeps additional information to nodes that should be removed.

Added note about large consumption RAM on large dump files.
This commit doesn't solve this problem completely, but provides a way
to improve current parser to add incremental Configuration serialization
later.

* Working on iterative parser

* Added iterative Configurations parser

* fix

* Fix varlist iteration

* make sure that standards node was loaded
2019-12-27 08:50:56 +01:00
Georgy Komarov 730ea4163b misra.py: Handle essential type categories for ternary operations (#2455)
This commit will add feature to detect essential type categories
for operators of ternary operation.

This fixes issues with rule 10.1 and close the following ticket:
https://trac.cppcheck.net/ticket/9543
2019-12-21 07:40:15 +01:00
Georgy Komarov aadb35888f misra.py: Fix 12.3 FP (#2454)
This will close https://trac.cppcheck.net/ticket/9544
2019-12-19 15:55:51 +01:00
Georgy Komarov d0dd200444 misra.py: Fix R12.3 false negative in variables declaration (#2453)
Make rule 12.3 check detect commas in the variables declaration code.
2019-12-19 08:36:10 +01:00
Daniel Marjamäki 7977bbf456 Revert "misra.py: Fix R12.3 false negative in variables declaration (#2431)"
This reverts commit 7ce8ae408a.
2019-12-18 13:31:52 +01:00
Georgy Komarov 7ce8ae408a misra.py: Fix R12.3 false negative in variables declaration (#2431)
* misra.py: Allow executeCheck take multiple args

* misra.py: Fix R12.3 FN in variables declaration

Make rule 12.3 check detect commas in variables declaration code.

* Fix excluded lines

* Add support for global variables

* Fix FN when linenr from other file was excluded

* Add a few more tests

* Handle more cases

Handle additional cases to check commans in variables declaration
including:
* multiline variables declaration
* functions and structures initialized in the same line
* expanding macroses in initialization

* Fix FP in global struct initialization

* Add another test
2019-12-18 11:05:57 +01:00
Georgy Komarov c46e44e39e misra.py: R14.2: Verify for loop counter modification (#2409)
* misra.py: R14.2: Verify for counter modification

Add additional check to detect modification of loop counter in loop
body. Related issue: https://trac.cppcheck.net/ticket/9490

Add small fix that treat all assignment operators defined in N1750
6.5.16 as has side affects. This will affects rules 13.1, 13.3, 13.5
and allow to catch some false negatives.

* Add tests for fixed FPs for R13.{1,5,6}

* fix

* use isAssignmentOp from cppcheck data

* remove unused set

* handle case with empty body or syntax error

* add test with outer variable

* Fix FP in nested loops, add tests

* Fix FP on outer variables

* Fixup false positives for not loop counters
2019-12-15 18:23:12 +01:00
Georgy Komarov f87cd9818c misra.py: Fix false negative for rule 10.1 (#2449)
This will close Trac 9489.
2019-12-15 18:10:22 +01:00
Daniel Marjamäki 5e07528af5 Fixed #9505 (MISRA 20.7 check suggests code change that leads to invalid code) 2019-12-14 16:31:41 +01:00
Francesc Elies d538315268 [python] classes are missing __repr__ methods (#2437)
* [python] classes don't have a __repr__ method

* [python] removes unused import
2019-12-09 19:08:45 +01:00
Daniel Marjamäki 3d3e6f384c Fix #9505 (MISRA 20.7 check suggests code change that leads to invalid code) 2019-12-08 20:07:52 +01:00
Daniel Marjamäki 61c2c5a5f0 Misra: rule 5.3 is implemented in Cppcheck 2019-12-08 19:06:34 +01:00
Daniel Marjamäki 4a4b6fe39b MISRA: Remove rule 5.3, Cppcheck core has these warnings 2019-12-08 19:01:51 +01:00
Daniel Marjamäki 55afaebdac Fixed #9506 (false positive: MISRA 12.4) 2019-12-08 18:52:52 +01:00
Georgy Komarov 6bacc1987c misra.py: Fix R12.4 and R13.1 crashes on large initializer lists (#2410)
Fixed usage of hasSideEffectsRecursive which was causes crashes
of rules 12.4 and 13.1.

Add more tests for these rules.

See trac ticket: https://trac.cppcheck.net/ticket/9487
2019-12-01 15:03:33 +01:00
Georgy Komarov c1770414ba misra.py: Fix crash on c++ code (#2414) 2019-12-01 14:51:12 +01:00
Georgy Komarov bd6f236481 misra.py: Fix 5.3 FP (#2405)
* misra.py: Fix 5.3 FP

This will close https://trac.cppcheck.net/ticket/9497

* fix names conflict

* fix naming
2019-11-30 10:05:57 +01:00