[patch, fortran] PR 47359 - warnings for constant conversion

[Thomas Koenig]

Am 01.06.2015 um 22:10 schrieb Steve Kargl:

>> c) Warn for
>>
>>   print *,3.1415926535 with -Wconversion-extra
>>
>>   and don't warn for
>>
>>   print *,3.141592653589_4
>>
> 
> This would be my first choice.  If a user actually specifies
> a suffix, I assume that the user has given some thought 
> to the preceding digits.


>> d) Like now: Warn with -Wconversion-extra for both
>>
>>    print *,3.1415926535
>>
>>    and
>>
>>    print *,3.14159265358979_4
> 
> This would be my second choice.

I would actually prefer d).  -Wconversion-extra is about warning
for things that are often correct.  I would like to have a chance
to warn about this kind of construct.

Any other comments?  OK to commit?

	Thomas