[cfe-dev] Any reason we disallow ui64 prefix

[Fariborz Jahanian]

On Jan 22, 2010, at 11:41 AM, Chris Lattner wrote:

>
> On Jan 22, 2010, at 11:40 AM, Fariborz Jahanian wrote:
>
>>
>> Hi,
>>
>> In LiteralSupport.cpp we explicitly disallow ui64 suffix in msft
>> extensions (as in #define ULLONG_MAX 0xffffffffffffffffui64).
>> This constant is defined by visual studio's "limits.h".
>
> Where is it explicitly disallowed?

in: lib/Lex/LiteralSupport.cpp

      case 'u':
     case 'U':
       if (isFPConstant) break;  // Error for floating constant.
       if (isUnsigned) break;    // Cannot be repeated.
       isUnsigned = true;
       continue;  // Success.


...

case 'i':
       if (PP.getLangOptions().Microsoft) {
         if (isFPConstant || isUnsigned || isLong || isLongLong) break;



>
>
> -Chris