Thread overview
[Issue 1896] New: null literal check does not work
Mar 07, 2008
d-bugmail
Jan 30, 2012
yebblies
Jan 30, 2012
yebblies
March 07, 2008
http://d.puremagic.com/issues/show_bug.cgi?id=1896

           Summary: null literal check does not work
           Product: D
           Version: 1.028
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: DMD
        AssignedTo: bugzilla@digitalmars.com
        ReportedBy: benoit@tionex.de


DMD 1.028 on linux does not issue an error for class types compared against null literal.


-- 

January 30, 2012
http://d.puremagic.com/issues/show_bug.cgi?id=1896


yebblies <yebblies@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |eatingstaples@gmail.com


--- Comment #1 from yebblies <yebblies@gmail.com> 2012-01-30 14:56:40 EST ---
*** Issue 6444 has been marked as a duplicate of this issue. ***

-- 
Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
January 30, 2012
http://d.puremagic.com/issues/show_bug.cgi?id=1896


yebblies <yebblies@gmail.com> changed:

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


--- Comment #2 from yebblies <yebblies@gmail.com> 2012-01-30 14:58:12 EST ---
Works on current dmd (1.068 & 2.058)

void main()
{
    class C {}
    C c;
    if (c != null) {}
    if (c == null) {}
}

Prints:

testx.d(5): Error: use '!is' instead of '!=' when comparing with null
testx.d(6): Error: use 'is' instead of '==' when comparing with null

-- 
Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email
------- You are receiving this mail because: -------