[Issue 10910] New: Duplicate error messages for array bounds errors

[d-bugmail at puremagic.com]

http://d.puremagic.com/issues/show_bug.cgi?id=10910

           Summary: Duplicate error messages for array bounds errors
           Product: D
           Version: D1 & D2
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: P2
         Component: DMD
        AssignedTo: nobody at puremagic.com
        ReportedBy: clugdbug at yahoo.com.au


--- Comment #0 from Don <clugdbug at yahoo.com.au> 2013-08-27 00:05:32 PDT ---
The problem is in implicitConvTo() and implicitCastTo(). They call optimize(),
but don't save the result.

optimize() can generate an error message, and return an ErrorExp when an array
bounds error occurs.
It should be called BEFORE implicitConvTo, instead of inside it.
There are many cases of this, here are some examples:


void example()
{
   char c = "abcdef"[17];
   char[7] x = "abc"[12];
   int ww = "abc"["afds"[9]];
}

diag.d(4): Error: string index 17 is out of bounds [0 .. 6]
diag.d(4): Error: string index 17 is out of bounds [0 .. 6]
diag.d(5): Error: string index 12 is out of bounds [0 .. 3]
diag.d(5): Error: string index 12 is out of bounds [0 .. 3]
diag.d(5): Error: string index 12 is out of bounds [0 .. 3]
diag.d(5): Error: string index 12 is out of bounds [0 .. 3]
diag.d(6): Error: string index 9 is out of bounds [0 .. 4]
diag.d(6): Error: string index 9 is out of bounds [0 .. 4]

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