[Issue 291] Bad code generation for real == 0, !=0 (incorrect for NaN)

[d-bugmail at puremagic.com]

http://d.puremagic.com/issues/show_bug.cgi?id=291


clugdbug at yahoo.com.au changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Severity|normal                      |critical
            Summary|uninitialized 'real' passes |Bad code generation for real
                   |for 0.0                     |== 0, !=0 (incorrect for
                   |                            |NaN)




------- Comment #3 from clugdbug at yahoo.com.au  2006-10-02 06:24 -------
Changed name and severity of this bug, since it applies to !=0 as well as ==.
(Taken from bug 365):

void main()
{
     real x = real.nan;
     assert( x!=0 );              // fails
     if (x==0) assert(0);         // fails
}

It looks to me as though there's a JPE instruction missing, to cover the NaN
case. I'm no longer confident that this is a regression.

ie, should be
jp image00400000!_Dmain+0x23 (00402033)
jz image00400000!_Dmain+0x23 (00402033)
---------------------


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