[Bug c/15698] [4.0/4.1 Regression] no error in presence of broken builtin fn + K&R declaration

[jsm28 at gcc dot gnu dot org]

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Bug 15698 depends on bug 16666, which changed state.

Bug 16666 Summary: [3.4 regression] dremf type conflict
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16666

           What    |Old Value                   |New Value
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |FIXED

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15698