[Issue 5995] string append negative integer causes segfault

[d-bugmail at puremagic.com]

http://d.puremagic.com/issues/show_bug.cgi?id=5995


kennytm at gmail.com changed:

           What    |Removed                     |Added
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                 CC|                            |kennytm at gmail.com


--- Comment #1 from kennytm at gmail.com 2011-05-13 02:14:37 PDT ---
This may or may not be expected. Appending any non-Unicode (> 0x10ffff)
character will halt the program. In _d_arrayappendcd
(https://github.com/D-Programming-Language/druntime/blob/master/src/rt/lifetime.d#L1762,
BTW why this is in rt/lifetime.d?!):

    else if (c <= 0x10FFFF)
    {
        ...
    }
    else
        assert(0);      // invalid utf character - should we throw an exception
instead?

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