[Issue 7300] New: std.regex.ShiftOr!dchar.search is broken

[d-bugmail at puremagic.com]

http://d.puremagic.com/issues/show_bug.cgi?id=7300

           Summary: std.regex.ShiftOr!dchar.search is broken
           Product: D
           Version: D2
          Platform: Other
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: Phobos
        AssignedTo: nobody at puremagic.com
        ReportedBy: mailme+d at nilsb.dyndns.org


--- Comment #0 from Nils <mailme+d at nilsb.dyndns.org> 2012-01-15 23:45:02 PST ---
I stumbled over this:
---
import std.regex;
void main() {
std.regex.match("a"d, "aa"d);
}
---
=>
core.exception.AssertError@/home/nils/d/dmd2/linux/bin32/../../src/phobos/std/utf.d(800):
Attempted to decode past the end of a string

I traced it down to ShiftOr.search returning a value greater than the input
length:
---
dstring
    input = "a",
    pattern = "aa";
assert(regex(pattern).kickstart.search(input, 0) <= input.length); // fails
---

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