[Bug c++/20145] [4.0/4.1 Regression] template "class has virtual functions ... " is not suppressed with -isystem

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2005-04-06 06:48 -------
(In reply to comment #7)
> The fact that something is in a system header does not in general cause the
> compiler not to warn about it.  G++ does not issue certain pedantic warnings
> when in a system header, but this is not one of those.

Why does the non-template version does not warn then?

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20145