Commit Graph

141 Commits

Author SHA1 Message Date
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 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 86d0f62d36 misra.py: Fix 12.3 FP in initializer lists (#2489)
See: trac 9581
2020-01-15 09:55:59 +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 40aefa1ba4 [windows] cannot run test-misra (binary not found) (#2441)
set PYTHONPATH=addons
    python -m pytest addons/test/test-misra.py
2019-12-10 18:32:41 +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 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
Sebastian fb96e5433a
y2038 addon: Fix that check can never return True, add tests (#2417)
* y2038 addon: Fix that check can never return True, add tests

At the beginning of `check_y2038_safe()` the variable `y2038safe` should
be initialized with `True` and only be set to `False` if there are any
issues. Otherwise it could never become `True`.
In the unit tests the return value of `check_y2038_safe()` is now
verified. But it does not yet work for the "good" example. The "good"
example also returns `False` since it finds warnings in the include
file. So this verification is marked with a "FIXME" comment.

* y2038 tests: Add "good" test file that does not use time functionality

The test file y2038-test-5-good-no-time-used.c does not use any time
functionality so the y2038 addon is not allowed to issue any warnings
and the check must return with `True` (code is safe).
2019-12-03 18:49:11 +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
Sebastian 8d114a40e4
misra-test.c: Add more tests for rule 14.2 (including FP and FN) (#2399)
Adding more tests for rule 14.2 revealed a false negative when the
loop counter is changed inside the loop.
Corresponding line in the example suite:
https://gitlab.com/MISRA/MISRA-C/MISRA-C-2012/Example-Suite/blob/master/R_14_02.c#L39
Also a false positive has been revealed when the loop counter is
initialized in a function that is called in the first `for` clause.
Corresponding line in the example suite:
https://gitlab.com/MISRA/MISRA-C/MISRA-C-2012/Example-Suite/blob/master/R_14_02.c#L43
2019-11-30 11:27:31 +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
Sebastian e46191e6e8
misra-test.c: Add more tests for rule 10.1 (including FP and FN) (#2398)
Add some more tests for rule 10.1. They are given as examples in the
MISRA document. The 10.1 test that causes a false positive for 10.6 can be
found under the 10.6 tests.
Track ticket for false positive:
https://trac.cppcheck.net/ticket/9488
Trac ticket for the false negative:
https://trac.cppcheck.net/ticket/9489
2019-11-27 09:09:17 +01:00
Georgy Komarov 2c28440f15 cert.py: Add ENV33-C-EX1 exception (#2396)
* cert.py: Add ENV33-C-EX1 exception

ENV33-C-EX1: It is permissible to call system() with a null pointer
argument to determine the presence of a command processor for the
system. [1]

[1]: https://wiki.sei.cmu.edu/confluence/pages/viewpage.action?pageId=87152177

* Handle different null-pointer constants
2019-11-24 10:31:08 +01:00
Georgy Komarov 14469aced8 cert.py: Fix EXP05C crash (#2392)
* cert.py: Fix EXP05 crash

* Fix arguments check
2019-11-23 17:41:47 +01:00
Georgy Komarov b9bc5d6d78 cert.py: Add ENV33-C (#2377) 2019-11-21 06:46:46 +01:00
Sebastian 4f1db90367
naming.py: Fix FP for constructors/destructors (#2375) 2019-11-18 18:41:57 +01:00
versat 0dd180d5a2 misra-test.cpp: Remove redundant unused function argument
The unused argument causes the new check for rule 2.7 to output an error
here.
I verified that the regression test still works without the unused
argument (misra.py would still crash).
Travis should be happy again.
2019-11-18 15:57:53 +01:00
Mathias Schmid 8c22b2a316 Add check for MISRA-C 2012 Rule 2.7 and test cases. (#2340)
* Add check for MISRA-C 2012 Rule 2.7 and test cases.

* Cast unused function parameters of some test patterns to "void".

* Fix function parameter void cast in "misra_17_6". Add comment to "misra_11_7_extra" to make all function parameter void casts look alike.
2019-11-18 06:56:30 +01:00
Georgy Komarov da163ae0e8 misra.py: Add regression test for R21.1 crash (#2356) 2019-11-13 20:36:31 +01:00
Georgy Komarov 16e8016259 misra.py: Fix R21.1 FalsePositive on standard functions and errno (#2339)
Rule 21.1 now doesn't report errors on usage of library functions
started from underscore (e.g. `_exit') and valid errno assignment.

See added tests for examples.
2019-11-08 17:20:37 +01:00
Georgy Komarov ba217815cb misra.py: Fix R16.3 FN in last case/default statement (#2325)
Fix R16.3 state machine which doesn't report errors in last case/default
statemenet. See added tests for examples.

Issue on trac: https://trac.cppcheck.net/ticket/8548
2019-11-08 08:06:10 +01:00
Armin Müller bdd41151ed Typos found by running "codespell" (#2314) 2019-10-31 15:03:18 +01:00
Georgy Komarov b35091b827 misra.py: Fix 18.8 crash on checking undefined id (#2299) 2019-10-26 17:29:38 +02:00
Georgy Komarov 72f07c8a33 Add MISRA checks for rules 21.1 and 21.12 (#2284)
* Add MISRA 21.1 check

This also required add static field for functions in symboldatabase.

* Add MISRA R21.12

* Use newer ASSERT macroses in tests
2019-10-26 08:32:46 +02:00
Mathias Schmid 387132389a Add check for MISRA-C 2012 rule 3.2 and test cases. (#2269)
* Add check for MISRA-C 2012 rule 3.2 and test cases.

* Fix formatting of MISRA rule 3.2 example.
2019-10-16 11:31:42 +02:00
Mathias Schmid 1df97ac5c8 Add check for MISRA-C 2012 rule 4.2 - Trigraphs should not be used - as well as some test cases. (#2253) 2019-10-09 08:26:05 +02:00
Conrado Gouvea 40f136ac78 MISRA: add exception to rule 3.1 (#2231)
* misra: add exception to rule 3.1

* misra: add parenthesis for clarity in rule 3.1
2019-10-03 21:15:00 +02:00
Conrado Gouvea 67971db58f misra: fix false positive in 11.7 (#2233) 2019-10-03 10:15:50 +02:00
Georgy Komarov 846f356db4 misra.py: Fix Rule 4.1 (#2216)
* misra.py: Use standard string module

* misra.py: Fixup R4.1

References:
* https://trac.cppcheck.net/ticket/9370
* https://sourceforge.net/p/cppcheck/discussion/development/thread/7274ed3842/?limit=25#799a

* Add more examples from @matzeschmid PR

* Add more out-of-bounds tests

* Fix R4.1.

* Compress hex condition

* Add more test cases

* Fix python3 zip import
2019-09-28 20:16:10 +02:00
Sebastian 3b3ff2bb62
misra-test.c: Rule 4.1: Add another compliant test example (#2212) 2019-09-24 20:05:57 +02:00
versat dc1cdd2b76 addons/test/test-*.py: Improve documentation about running the tests 2019-09-20 13:39:38 +02:00
Richard A. Smith 2b44fb57bc Loosen restrictions on MISRA rules text structure (#2157)
Version 1.88 changed the parsing of the MISRA rules file adding a
severity setting.  This caused a regression in rule parsing.

In particular the following format used to parse cleanly and produce
rule output that would show the severity as part of the rule text.

    Rule 1.2

    Advisory

    Rule text goes here.

    Rule 1.3

    Required

    More rule text goes here.

As of 1.88 a file structured like above would parse as having no rules.

The problem is the use of blank lines as a rule delimiter.   The
modified rule parser wants to see a rules formatted like below:

    Rule 3.1 Required
    R3.1 text.
    Rule 4.1 Required
    R4.1 text.

or:

    Rule 1.1
    Add this rule and parse to next, skipping empty lines.

    Rule 1.2
    Rule text.

Any rule text that did not fall into one of the above formats would
result in incomplete rule text parsing.

Change the parsing of the rule text file so that blank lines are ignored
instead of treating them as a delimiter between rules. Instead use the
start of the next rule as a delimiter for the end of the previous rule.
This allows both of the newer formats but also supports the behavior of
pre-1.88 versions.

Change units tests that were specifically forbidding the use of blank
lines to ones that allow blank lines.
2019-09-09 21:43:44 +02:00
Conrado Gouvea 3740c57160 misra: fix rule 5.4 false positive when macro is defined 'twice' inside #if/#else (#2125) 2019-08-31 07:53:16 +02:00
Daniel Marjamäki 2e9e3ed2f1 Fixed #8823 (false positive: MISRA rule 16.3) 2019-08-11 19:08:57 +02:00
Daniel Marjamäki 016340f77d Fixed #8657 (false postive: MISRA rule 15.7) 2019-08-11 17:54:02 +02:00
Daniel Marjamäki 43aabcd318 Fixed #8656 (false positive: MISRA rule 10.1) 2019-08-11 09:47:37 +02:00