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From: Nick Roberts <nickrob@snap.net.nz>
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Date: Mon, 14 Jan 2008 06:34:00 -0000
To: Daniel Jacobowitz <drow@false.org>
Cc: Andreas Schwab <schwab@suse.de>, 	Marc Khouzam <marc.khouzam@ericsson.com>, gdb@sources.redhat.com
Subject: Re: -var-update using formatted value
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 > I was suggesting:
 > 
 > (gdb) print 0b1101
 > $1 = 13

I guess the change below to c-exp.y does that, at least for C.  But AFAIK 0b
is not a recognised prefix for C.

I was thinking of:

(gdb) print/t 13
$1 = 0b1101

and

-var-create - * i22
^done,name="var1",numchild="0",value="6",type="volatile int"
(gdb) 
-var-set-format var1 binary
^done,format="binary"
(gdb) 
-var-update --all-values var1
^done,changelist=[{name="var1",value="0b110",in_scope="true",type_changed="false"}]
(gdb) 


the change below to printcmd.c does this.  This seems to be consistent with
existing usage, e.g. in Modula-2 hexadecimals are input like 0FFH but
output in a lanuage independent way as 0xff.

-- 
Nick                                           http://www.inet.net.nz/~nickrob

*** printcmd.c.~1.116.~	2008-01-12 11:31:27.000000000 +1300
--- printcmd.c	2008-01-14 19:23:16.000000000 +1300
*************** print_scalar_formatted (const void *vala
*** 484,489 ****
--- 484,490 ----
  	      cp--;
  	  }
  	strcpy (buf, cp);
+ 	fputs_filtered ("0b", stream);
  	fputs_filtered (buf, stream);
        }
        break;


*** c-exp.y.~1.42.~	2008-01-10 09:15:34.000000000 +1300
--- c-exp.y	2008-01-14 18:38:06.000000000 +1300
*************** parse_number (p, len, parsed_float, puti
*** 1180,1185 ****
--- 1180,1194 ----
  	  }
  	break;
  
+       case 'b':
+ 	if (len >= 3)
+ 	  {
+ 	    p += 2;
+ 	    base = 2;
+ 	    len -= 2;
+ 	  }
+ 	break;
+ 
        default:
  	base = 8;
  	break;