[Issue 7442] New: ctRegex!`\p{Letter}` uses a lot memory in compilation

[d-bugmail at puremagic.com]

http://d.puremagic.com/issues/show_bug.cgi?id=7442

           Summary: ctRegex!`\p{Letter}` uses a lot memory in compilation
           Product: D
           Version: D2
          Platform: All
        OS/Version: All
            Status: NEW
          Keywords: CTFE
          Severity: critical
          Priority: P2
         Component: DMD
        AssignedTo: nobody at puremagic.com
        ReportedBy: kennytm at gmail.com


--- Comment #0 from kennytm at gmail.com 2012-02-05 02:30:37 PST ---
Test case:

------------------------
import std.regex;
enum bug7442 = ctRegex!`\p{Letter}`;
------------------------

Compile with `dmd -c test7442.d`. DMD will very quickly use up all system
memory. (I'll try to reduce the test case later.)

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