http://d.puremagic.com/issues/show_bug.cgi?id=1620

           Summary: std.conv.to fails for integer unsigned->signed
                    conversion
           Product: D
           Version: 2.006
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: Phobos
        AssignedTo: bugzilla@digitalmars.com
        ReportedBy: i.kasiuk@gmx.de


A conversion like to!(int)(123u) fails, producing the following error at
runtime:

Error: Error: overflow Conversion underflow


Here is the code from conv.d which does the check:

  static const

      sSmallest = isFloatingPoint!(S) ? -S.max : S.min,

      tSmallest = isFloatingPoint!(T) ? -T.max : T.min;

  static if (sSmallest < tSmallest) {

    // possible underflow

    if (value < tSmallest) conv_overflow("Conversion underflow");

  }

  ...


This apparently doesn't work as intended because of the implicit conversions happening when the values are compared.

Actually, why does the compiler silently do an implicit type conversion here? I think this is a bit unfortunate.


-- 

http://d.puremagic.com/issues/show_bug.cgi?id=1620





------- Comment #1 from i.kasiuk@gmx.de  2008-03-01 12:31 -------
The bug is still present in version 2.011.


-- 

http://d.puremagic.com/issues/show_bug.cgi?id=1620


andrei@metalanguage.com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         AssignedTo|bugzilla@digitalmars.com    |andrei@metalanguage.com




------- Comment #2 from andrei@metalanguage.com  2008-03-01 17:40 -------
I actually fixed this in my tree. The fix will be part of the next release. Thanks!


-- 

http://d.puremagic.com/issues/show_bug.cgi?id=1620


andrei@metalanguage.com changed:

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




------- Comment #3 from andrei@metalanguage.com  2008-03-07 00:38 -------
Fixed in 2.012.


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