[Bug c/56391] variable set but unused isn't reported. if it has been used prior to setting it to a new value.

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56391



Jakub Jelinek <jakub at gcc dot gnu.org> changed:



           What    |Removed                     |Added

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             Status|UNCONFIRMED                 |RESOLVED

                 CC|                            |jakub at gcc dot gnu.org

         Resolution|                            |INVALID



--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> 2013-02-19 
11:22:21 UTC ---

The variable is used, so it isn't something -Wunused-but-set-parameter is meant

to warn for.  That warning is emitted by the frontend, to warn in this case

you'd need to warn in the middle-end during dead code elimination or similar,

and it would have terrible ratio of false positives.