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digitalmars.D.bugs - [Issue 2568] New: Warning Inside Template Causes Instantiation Error

reply d-bugmail puremagic.com writes:
http://d.puremagic.com/issues/show_bug.cgi?id=2568

           Summary: Warning Inside Template Causes Instantiation Error
           Product: D
           Version: 1.039
          Platform: PC
        OS/Version: Windows
            Status: NEW
          Keywords: rejects-valid
          Severity: minor
          Priority: P2
         Component: DMD
        AssignedTo: bugzilla digitalmars.com
        ReportedBy: business3 twistedpairgaming.com


-----------------
void foo(T)(T arg)
{
    int i = 999;
    byte b = i;
}

void main()
{
    float f;
    foo(f);
}
-----------------

The above code compiles correctly with warnings disabled. But when warnings are
enabled, an template instantiation error is generated:

-----------------
warning - main.d(4): Error: implicit conversion of expression (i) of type int
to byte can cause loss of data
main.d(10): template instance main_.foo!(float) error instantiating
-----------------

This might be related to #2567 and DMD's general treatment of warnings as
errors.


-- 
Jan 07 2009
parent d-bugmail puremagic.com writes:
http://d.puremagic.com/issues/show_bug.cgi?id=2568


yebblies <yebblies gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
                 CC|                            |yebblies gmail.com
         Resolution|                            |INVALID


--- Comment #1 from yebblies <yebblies gmail.com> 2011-06-10 06:40:33 PDT ---
In dmd 1.063 this no longer generates the error, but does cause the warning. 
The failed compilation is in line with dmd's treatment of errors.  The -wi
switch has since been introduced for the case you do not want to treat warnings
as error.

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