Red Hat Bugzilla – Bug 825161
False positive unusedStructMember when using C++ templates
Last modified: 2014-12-22 18:46:18 EST
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):
1.54-1.fc15 (SRPM from Fedora 16 recompiled on Fedora 15)
Steps to Reproduce:
1. cppcheck --quiet --enable=all cppcheck.cpp
[cppcheck.cpp:8]: (style) struct or union member 'B::y' is never used
No problems reported
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
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Whoops, this seems to have passed me by. Looks like the issue is still present in 1.55. Reporting upstream.
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:
Looks like this has slipped under my radar. Anyway, it is working at least in cppcheck 1.67.