[Bug c/32324] unsigned long long operator and integer literals

2007-06-14 Thread schwab at suse dot de 


--- Comment #3 from schwab at suse dot de  2007-06-14 09:45 ---
This is still undefined.  Use 1U31 instead.


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schwab at suse dot de changed:

   What|Removed |Added

 Status|UNCONFIRMED |RESOLVED
 Resolution||INVALID


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32324

[Bug c/32324] unsigned long long operator and integer literals

2007-06-13 Thread gcc at axel-naumann dot de 


--- Comment #1 from gcc at axel-naumann dot de  2007-06-13 16:50 ---
Created an attachment (id=13699)
 -- (http://gcc.gnu.org/bugzilla/attachment.cgi?id=13699action=view)
Test case as stated in the report.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32324

[Bug c/32324] unsigned long long operator and integer literals

2007-06-13 Thread andrew dot stubbs at st dot com 


--- Comment #2 from andrew dot stubbs at st dot com  2007-06-13 18:00 
---
As it happens, I encountered your real problem quite recently. :)

(int)(131) is undefined (C99 standard 6.5.7/4).

This modified version gives the same result both ways:

int main (){
   unsigned long long a = 18446744065119617024llu;
   /* results expected to be identical */
#ifdef EXPECTED
   unsigned int b = ((unsigned int)(131));
   a = a / b;
#else
   a = a / ((unsigned int)(131));
#endif

   return a;
}


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32324