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digitalmars.D.bugs - [Issue 17637] New: Integral promotion rules not being followed


          Issue ID: 17637
           Summary: Integral promotion rules not being followed
           Product: D
           Version: D2
          Hardware: All
                OS: All
            Status: NEW
          Severity: normal
          Priority: P1
         Component: dmd
          Assignee: nobody puremagic.com
          Reporter: bugzilla digitalmars.com

Johan Engelen reports:

  import core.stdc.stdio;

  void main() {
    uint total = 0;
    void add(int x) { total += x; }
    ubyte popCount() { return 5; }

    printf("%u\n", total);    // different result from C

The trouble is that -popCount() negates the ubyte before promoting to int,
instead of after.

Jul 11 2017