[Issue 12444] New: std.array uninitializedArray & minimallyInitializedArray missing APPENDABLE attribute / capacity info

[d-bugmail at puremagic.com]

https://d.puremagic.com/issues/show_bug.cgi?id=12444

           Summary: std.array uninitializedArray &
                    minimallyInitializedArray missing APPENDABLE attribute
                    / capacity info
           Product: D
           Version: D2
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: P2
         Component: Phobos
        AssignedTo: nobody at puremagic.com
        ReportedBy: safety0ff.bugz at gmail.com


--- Comment #0 from safety0ff.bugz <safety0ff.bugz at gmail.com> 2014-03-23 03:48:59 PDT ---
import std.array;
import std.stdio;
import core.memory;

void main()
{
    double[] a = uninitializedArray!(double[])(100);
    a = a[0 .. 1];
    assert(a.capacity == 0);
    a.assumeSafeAppend();
    assert(a.capacity != 0); // Error

    double[] b = minimallyInitializedArray!(double[])(100);
    b = b[0 .. 1];
    assert(b.capacity == 0);
    b.assumeSafeAppend();
    assert(b.capacity != 0); // Error

    double[] c = new double[100];
    c = c[0 .. 1];
    assert(c.capacity == 0);
    c.assumeSafeAppend();
    assert(c.capacity != 0); // OK!

    auto dptr = cast(double*)GC.malloc(100 * double.sizeof, GC.BlkAttr.NO_SCAN
| GC.BlkAttr.APPENDABLE);
    double[] d = dptr[0 .. 100];
    d = d[0 .. 1];
    assert(d.capacity == 0);
    d.assumeSafeAppend();
    assert(d.capacity != 0); // OK!
}

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