[Issue 5327] New: Immutable correctness is broken

d-bugmail at puremagic.com d-bugmail at puremagic.com
Mon Dec 6 03:55:35 PST 2010


http://d.puremagic.com/issues/show_bug.cgi?id=5327

           Summary: Immutable correctness is broken
           Product: D
           Version: D2
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: P2
         Component: DMD
        AssignedTo: nobody at puremagic.com
        ReportedBy: zan77137 at nifty.com


--- Comment #0 from SHOO <zan77137 at nifty.com> 2010-12-06 03:53:59 PST ---
This code shouldn't work:
------------------------------
import std.stdio;
struct ID
{
    immutable int value;
}

struct Data
{
    ID id;
}
void main()
{
    Data data = Data(ID(1));
    immutable int* val = &data.id.value;
    writeln(*val); // 1
    data = Data(ID(2)); // <- This line shouldn't be allowed.
    writeln(*val); // 2
}

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