[Bug c++/17920] add __attribute__((reimpl)) as a replacement for the (optional) virtual keyword for reimplementations of virtual functions

[bangerth at dealii dot org]

------- Additional Comments From bangerth at dealii dot org  2004-10-11 12:54 -------
I concur with Giovanni: this is a case very much like the format 
checking for printf and attribute sentinel. If you simply remove 
the attribute statement, then the generated code is exactly the 
same in all cases, the attribute is there only to enable the compiler 
to emit more warnings. 
 
W. 

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17920