Re: printf enhancement

2010-01-22 Thread Paolo Carlini 
On 01/22/2010 12:01 PM, Piotr Wyderski wrote:
 Since it is possible to use the 0b prefix
 to specify a binary number in GCC/C++,
 will there be any resistance to add %b
 format specifier to the printf family format
 strings?
   
This has absolutely nothing to do with GCC and its development, you
understand.

Paolo.

Re: printf enhancement

2010-01-22 Thread Piotr Wyderski 
Paolo Carlini wrote:

 This has absolutely nothing to do with GCC and its development, you
 understand.

You sure? Isn't the implementation of printf formatting engine a part
of GCC support libraries and doesn't adding an extension to it
belong to the category development?

Re: printf enhancement

2010-01-22 Thread Paolo Carlini 
On 01/22/2010 12:31 PM, Piotr Wyderski wrote:
 You sure? Isn't the implementation of printf formatting engine a part
 of GCC support libraries
The C library, to which library printf belongs, is not part of the GCC
project.

Paolo.

Re: printf enhancement

2010-01-22 Thread Piotr Wyderski 
Paolo Carlini wrote:

 The C library, to which library printf belongs, is not part of the GCC
 project.

In that case it certainly isn't a GCC issue.

Re: printf enhancement

2010-01-22 Thread Kaveh R. GHAZI 
On Fri, 22 Jan 2010, Piotr Wyderski wrote:

 Paolo Carlini wrote:

  The C library, to which library printf belongs, is not part of the GCC
  project.

 In that case it certainly isn't a GCC issue.

Assuming this feature is accepted in glibc, you'll want to update GCC's
-Wformat flag.

Re: printf enhancement

2010-01-22 Thread Alfred M. Szmidt 
   Since it is possible to use the 0b prefix to specify a binary
   number in GCC/C++, will there be any resistance to add %b format
   specifier to the printf family format strings?

You can do that yourself by using the hook facility for printf, see
(libc) Customizing Printf in the GNU C library manual; this is a GNU
extention and not supported by ISO C.

Re: printf enhancement

2010-01-22 Thread Nils Pipenbrinck 
Alfred M. Szmidt wrote:
Since it is possible to use the 0b prefix to specify a binary
number in GCC/C++, will there be any resistance to add %b format
specifier to the printf family format strings?

 You can do that yourself by using the hook facility for printf, see
 (libc) Customizing Printf in the GNU C library manual; this is a GNU
 extention and not supported by ISO C.
   
If you add support for it, you may break code that already registers %b
using this functionality, no?

Cheers,
Nils