Patch for bug c++/17964 (cpp error locations for C++)

[Joseph S. Myers]

On Thu, 3 Nov 2005, Per Bothner wrote:

> As Joseph points out, things would be simpler/cleaner if
> --enable-mapped-location is made the default.  I really could
> use some help with this ...

Is it just Ada currently blocking this?  There's another serious 
regression (bug 24009) which could readily be fixed using 
--enable-mapped-location.

-- 
Joseph S. Myers               http://www.srcf.ucam.org/~jsm28/gcc/
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