[Bug c++/54413] Option for turning off compiler extensions for -std=c++11 with respect to complex/fixed-point numbers missing

[peter.sommerlad at hsr dot ch]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54413

--- Comment #7 from Peter Sommerlad <peter.sommerlad at hsr dot ch> 2012-10-15 21:17:07 UTC ---
(In reply to comment #6)
> So what should these flags look like?
> 
> -fno-complex-literals
> -fno-fixed-literals
looks fine in principle.
> 
> Or should I use -W?
> 
> Should -std=c++11, etc. set these by default 
> (and you turn then back on with -fcomplex-literals, -ffixed-literals?)

I would happy with -ansi -std=c++11 work as I expected.

turning the extensions off with just -std=c++11 would not be what you want,
since existing code might rely on these extensions, only when we get -std=c++16
with my paper on UDL accepted, we should turn off these extensions, because
then the standard library will ship with the UDL suffixes identical or closely
to the GNU extensions.