[Issue 10749] New: Range value analysis for triple operator too

[d-bugmail at puremagic.com]

http://d.puremagic.com/issues/show_bug.cgi?id=10749

           Summary: Range value analysis for triple operator too
           Product: D
           Version: D2
          Platform: All
        OS/Version: All
            Status: NEW
          Keywords: rejects-valid
          Severity: enhancement
          Priority: P2
         Component: DMD
        AssignedTo: nobody at puremagic.com
        ReportedBy: bearophile_hugs at eml.cc


--- Comment #0 from bearophile_hugs at eml.cc 2013-08-03 03:22:23 PDT ---
void main() {
    uint x = 6;
    char digit1 = (x % 10) + '0'; // OK
    char digit2 = (x < 10) ? (x + '0') : '#'; // Error.
}


DMD 2.064alpha gives:

test.d(4): Error: cannot implicitly convert expression (x < 10u ? x + 48u :
35u) of type uint to char

I think the line with digit2 should compile.
(Every useless cast removed from the code reduces the chance of bugs).

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