[Issue 5132] New: ~ unary operator silently different from C

[d-bugmail at puremagic.com]

http://d.puremagic.com/issues/show_bug.cgi?id=5132

           Summary: ~ unary operator silently different from C
           Product: D
           Version: unspecified
          Platform: Other
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: DMD
        AssignedTo: nobody at puremagic.com
        ReportedBy: ellery-newcomer at utulsa.edu


--- Comment #0 from Ellery Newcomer <ellery-newcomer at utulsa.edu> 2010-10-29 12:16:39 PDT ---
~ <type> => <type> for all integer types in D, however
~ <type> => int for small integer types in C.

This is a source of silently different behavior between D and C at least in
unsigned integer types.

example:

// test.d
import std.stdio;
void main(){
  ushort x = 0xffff;
  writefln("%08x", ~x+1u);
}


// test.c
#include <stdio.h>
void main(void){
  unsigned short x = 0xffff;
  printf("%08x", ~x+1u);
}

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