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digitalmars.D.bugs - [Issue 10860] New: [CTFE] Static assert real.min_normal*real.max > 2 is false in some context

reply d-bugmail puremagic.com writes:
http://d.puremagic.com/issues/show_bug.cgi?id=10860

           Summary: [CTFE] Static assert real.min_normal*real.max > 2 is
                    false in some context
           Product: D
           Version: unspecified
          Platform: All
        OS/Version: All
            Status: NEW
          Keywords: CTFE
          Severity: normal
          Priority: P2
         Component: DMD
        AssignedTo: nobody puremagic.com
        ReportedBy: maxim maxim-fomin.ru


--- Comment #0 from Maxim Fomin <maxim maxim-fomin.ru> 2013-08-20 11:30:29 PDT
---
Considering the code from
https://github.com/D-Programming-Language/phobos/blob/master/std/math.d#L2894

void main()
{
   static assert(real.min_normal*real.max > 2);
}

This runs fine, but when dmd is executed under valgrind expression
real.min_normal*real.max is evaluated to -nanL and assertion fails. It may
happen due to different FPU environment, some bug in ctfe, flawed assertion, or
combination of thereof.

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parent d-bugmail puremagic.com writes:
http://d.puremagic.com/issues/show_bug.cgi?id=10860


Don <clugdbug yahoo.com.au> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |INVALID


--- Comment #1 from Don <clugdbug yahoo.com.au> 2013-08-21 00:27:30 PDT ---
This is a valgrind problem. Valgrind doesn't implement 80-bit floating point
numbers, unfortunately.

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