[patch] Enable lightweight checks with _GLIBCXX_ASSERTIONS.

[Michael Matz]

Hi,

On Mon, 7 Sep 2015, Jonathan Wakely wrote:

> > Interesting.  Is this mode ABI-compatible with the default mode?
> 
> Yes, that's the main reason I want to make this change.
> 
> > Should _FORTIFY_SOURCE imply _GLIBCXX_ASSERTIONS?
> 
> Yes, I think it should.

Then at least those assertions that lie in a different big-O complexity 
class have to be moved away from _GLIBCXX_ASSERTIONS (as hinted in your 
initial mail).  Some distros build packages with _FORTIFY_SOURCE, and 
while additional asserts seem acceptable, going from constant to linear 
(or the like) seems not.


Ciao,
Michael.