[Issue 4448] New: labeled break doesn't work in CTFE

[d-bugmail at puremagic.com]

http://d.puremagic.com/issues/show_bug.cgi?id=4448

           Summary: labeled break doesn't work in CTFE
           Product: D
           Version: D2
          Platform: Other
        OS/Version: Windows
            Status: NEW
          Severity: normal
          Priority: P2
         Component: DMD
        AssignedTo: nobody at puremagic.com
        ReportedBy: shro8822 at vandals.uidaho.edu


--- Comment #0 from BCS <shro8822 at vandals.uidaho.edu> 2010-07-11 15:12:45 PDT ---
string CTFE(string s) {
  int i, j;
  L1: for(i = 0; i < s.length; i++)
    switch(s[i]) {
      case ' ', '\n', '\r', '\t':
        continue;
      default: break L1;
    }
  L2: for(j = s.length; j > i; j--)
    switch(s[j-1]) {
      case ' ', '\n', '\r', '\t':
        continue;
      default: break L2;
    }
  return s[i..j];
}

import std.stdio;
pragma(msg, CTFE(" hello world!\n"));
void main(){ writef("'%s'\n", CTFE(" hello world!\n")); }

the function works at runtime but fails under CTFE. There may be a few cases
where labeled break may be hard to deal with but this one shouldn't cause
problems.

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