Bug 825161

Summary: False positive unusedStructMember when using C++ templates
Product: [Fedora] Fedora Reporter: Slawomir Czarko <slawomir.czarko>
Component: cppcheckAssignee: Susi Lehtola <susi.lehtola>
Status: CLOSED WORKSFORME QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: unspecified Docs Contact:
Priority: unspecified    
Version: 19CC: susi.lehtola, ville.skytta
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Last Closed: 2014-12-22 23:46:18 UTC Type: Bug
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Description Flags
File which triggers the error none

Description Slawomir Czarko 2012-05-25 09:26:42 UTC
Created attachment 586810 [details]
File which triggers the error

Description of problem:

When running cppcheck on code using C++ templates sometimes I get false positive unusedStructMember.


Version-Release number of selected component (if applicable):
1.53-1.fc15
1.54-1.fc15 (SRPM from Fedora 16 recompiled on Fedora 15)

How reproducible:
100%

Steps to Reproduce:
1. cppcheck --quiet --enable=all cppcheck.cpp
2.
3.
  
Actual results:
[cppcheck.cpp:8]: (style) struct or union member 'B::y' is never used


Expected results:
No problems reported

Additional info:

If I rename B::y to B::x then the error disappears. If I then change f() so it doesn't use a.x I get the error back, this time for both structures:
[cppcheck.cpp:3]: (style) struct or union member 'A::x' is never used
[cppcheck.cpp:8]: (style) struct or union member 'B::x' is never used

Comment 1 Fedora End Of Life 2012-08-07 16:42:06 UTC
This message is a notice that Fedora 15 is now at end of life. Fedora
has stopped maintaining and issuing updates for Fedora 15. It is
Fedora's policy to close all bug reports from releases that are no
longer maintained. At this time, all open bugs with a Fedora 'version'
of '15' have been closed as WONTFIX.

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Comment 2 Susi Lehtola 2012-08-07 19:35:44 UTC
Whoops, this seems to have passed me by. Looks like the issue is still present in 1.55. Reporting upstream.

Comment 3 Fedora End Of Life 2013-04-03 19:45:04 UTC
This bug appears to have been reported against 'rawhide' during the Fedora 19 development cycle.
Changing version to '19'.

(As we did not run this process for some time, it could affect also pre-Fedora 19 development
cycle bugs. We are very sorry. It will help us with cleanup during Fedora 19 End Of Life. Thank you.)

More information and reason for this action is here:
https://fedoraproject.org/wiki/BugZappers/HouseKeeping/Fedora19

Comment 4 Susi Lehtola 2014-12-22 23:46:18 UTC
Looks like this has slipped under my radar. Anyway, it is working at least in cppcheck 1.67.