------- Comment #6 from bangerth at gmail dot com 2009-08-20 21:20 ------- (In reply to comment #5) > Why is this a regression? Which compiler version didn't warn here?
4.3.2. Current mainline warns. > The question is really whether we want unused variables just in the case > where we can remove it and without further changes the program is still > valid or if we want to detect more elaborate cases where the programmer > can remove a variable with some extra work. Right, and I don't have the answer. All I'm saying is: this is, in a nutshell, one of the header files of the threading building blocks. I used to be able to compile my program with that file included with -W -Wunused and not get a warning, but now I do get a warning if I happen to not use the template function that is defined in the header file. W. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41134
