Re: [PATCH C/C++] Fix some diagnostics problems

[Shujing Zhao <pearly.zhao@oracle.com>]

On 06/09/2010 03:06 AM, Jason Merrill wrote:
> 
>> +            case ICR_DEFAULT_ARGUMENT:
>> +              error ("cannot convert %qT to %qT in default argument",
>> +                 rhstype, type);
>> +            case ICR_ARGPASS:
>> +              error ("cannot convert %qT to %qT in argument passing",
>> +                 rhstype, type);
>> +              break;
> 
> These cases are unreachable, as they are covered by the previous if 
> (fndecl) test.  Either remove the if (fndecl) message and use 
> parmnum/fndecl in these cases, or just use gcc_unreachable() in these 
> cases.
> 

At the test case testsuite/g++.old-deja/g++.mike/p10769b.C, the 'fndecl' is 
NULL, while the errtype is ICR_ARGPASS (argument passing). Is there something 
wrong at argument passing? With my experience, I can't figure it out. Thank you 
in advance if you can give me some guidance.

Thanks
Pearly