[C++/preprocessor Patch] PR c++/53690

[Paolo Carlini]

Hi,

On 07/01/2015 10:45 PM, Andreas Schwab wrote:
> Paolo Carlini <paolo.carlini@oracle.com> writes:
>
>> @@ -972,21 +972,20 @@ ucn_valid_in_identifier (cpp_reader *pfile, cppcha
>>      or 0060 (`), nor one in the range D800 through DFFF inclusive.
>>   
>>      *PSTR must be preceded by "\u" or "\U"; it is assumed that the
>> -   buffer end is delimited by a non-hex digit.  Returns zero if the
>> -   UCN has not been consumed.
>> +   buffer end is delimited by a non-hex digit.  Returns one if the
>> +   UCN has not been consumed, zero otherwise.
> The name of the function would make more sense if it returned a boolean
> with true meaning success.
To be clear (the diff can be a little confusing) we are talking about 
_cpp_valid_ucn, the name of the function I'm patching. That said, I'm of 
course open to proposals about a better name for the patched function. 
Likewise for the values returned, which I picked for consistency with 
all the other functions in libcpp, the usual "unix" convention.

Paolo.