[Bug c++/53322] Wunused-local-typedefs is not enabled by Wall or Wunused

["dodji at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53322

--- Comment #2 from Dodji Seketeli <dodji at gcc dot gnu.org> 2012-05-22 03:50:36 UTC ---
Author: dodji
Date: Tue May 22 03:50:26 2012
New Revision: 187757

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=187757
Log:
PR c++/53322 - -Wunused-local-typedefs is not enabled by Wall or Wunused

As the audit trail of this shows, -Wunused-local-typedefs is not
turned on by -Wunused after all.  Sigh.

Now that we have the EnabledBy construct for the *.opt files, it's
more precise and concise to use that to make -Wunused-local-typedefs
be triggered by -Wunused.

I have changed the gcc+.dg/warn/Wunused-local-typedefs.C test case to
make it use -Wunused instead of -Wunused-local-typedefs.  I had to
adjust it to avoid the warnings due to the other -W* options triggered
by -Wunused there.

While testing the compiler, it turned out that some local typedefs
were not being used when the experimental "Concepts" support is turned
off, in the libstdc++ test suite.  I also had to remove some obvious
useless local typedef usage in the fortran front-end.  Fixed thus.

Bootstrapped and tested on x86_64-unknown-linux-gnu against trunk.

gcc/c-family/

    PR c++/53322
    * c.opt (Wunused-local-typedefs): Use EnabledBy(Wunused).

libstdc++-v3/

    PR c++/53322
    * include/bits/stl_algobase.h (lower_bound)
    (lexicographical_compare): Do not declare unused local typedefs
    here when Concepts are turned off.

gcc/fortran/

    PR c++/53322
    * f95-lang.c (gfc_init_builtin_functions): Remove the unused
    typedef builtin_type.

gcc/testsuite/

    PR c++/53322
    * g++.dg/warn/Wunused-local-typedefs.C: Adjust to use -Wunused
    instead of -Wunused-local-typedefs.

Modified:
    trunk/gcc/c-family/ChangeLog
    trunk/gcc/c-family/c.opt
    trunk/gcc/fortran/ChangeLog
    trunk/gcc/fortran/f95-lang.c
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/testsuite/g++.dg/warn/Wunused-local-typedefs.C
    trunk/libstdc++-v3/ChangeLog
    trunk/libstdc++-v3/include/bits/stl_algobase.h