http://d.puremagic.com/issues/show_bug.cgi?id=2840

           Summary: Missing line number for int %= complex
           Product: D
           Version: 1.042
          Platform: PC
        OS/Version: Windows
            Status: NEW
          Keywords: diagnostic
          Severity: minor
          Priority: P2
         Component: DMD
        AssignedTo: bugzilla@digitalmars.com
        ReportedBy: clugdbug@yahoo.com.au


void main(){
   int x;
   x %= 2+2i;
}
fog.d(3): Error: cannot perform modulo complex arithmetic
Error: long has no effect in expression (0)

---
I don't know where the 'long' comes from.
Both D1 and D2. This is one of the many op= bugs for erroneous complex
operations, along with issue #718 and issue #2839.


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Don <clugdbug@yahoo.com.au> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                URL|                            |patch
         AssignedTo|nobody@puremagic.com        |bugzilla@digitalmars.com




--- Comment #1 from Don <clugdbug@yahoo.com.au>  2009-06-09 16:38:34 PDT ---
Root cause: ErrorExp() should not generate more error messages (ErrorExp never
has a line number).

PATCH: Solve it for all expression error messages. expression.c, line 948

void Expression::error(const char *format, ...)
{
+   if (type==Type::terror) return;
    va_list ap;
    va_start(ap, format);
    ::verror(loc, format, ap);
    va_end( ap );
}

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Frits van Bommel <fvbommel@wxs.nl> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                URL|patch                       |
                 CC|                            |fvbommel@wxs.nl
         AssignedTo|bugzilla@digitalmars.com    |nobody@puremagic.com
         OS/Version|Windows                     |All




--- Comment #2 from Frits van Bommel <fvbommel@wxs.nl>  2009-06-10 02:52:34 PDT ---
Don, you may want to look at mtype.c, line 224. "basic[Terror] =
basic[Tint32]". That's right, Type::terror == Type::tint32. (This is why 'int'
shows up in so many error messages) So your patch would disable errors for any
expression that's legitimately of type int.
In order to fix it this way, you'd need to also introduce a separate error
type. (Which I'm sure many people would appreciate if done properly, by the
way)

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--- Comment #3 from Don <clugdbug@yahoo.com.au>  2009-06-10 17:21:46 PDT ---
Aargh! You're right. That's useless! That defeats the whole purpose of an error
type.
It also makes ErrorExp() completely erroneous, because it's just an integer
expression without line number! (there's no Loc in the constructor).

I think there's at least one other patch I've submitted which is invalid for
the same reason.
There definitely needs to be an error type. It would take a lot of familiarity
with the code to be able to make one, though.

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Don <clugdbug@yahoo.com.au> changed:

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


--- Comment #4 from Don <clugdbug@yahoo.com.au> 2010-06-14 04:33:01 PDT ---
Fixed DMD2.062.

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--- Comment #5 from Don <clugdbug@yahoo.com.au> 2010-06-14 04:33:26 PDT ---
Fixed DMD1.062.

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