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digitalmars.D.bugs - [Issue 5284] New: Array ops punch through const system

reply d-bugmail puremagic.com writes:
http://d.puremagic.com/issues/show_bug.cgi?id=5284

           Summary: Array ops punch through const system
           Product: D
           Version: D2
          Platform: x86
        OS/Version: Windows
            Status: NEW
          Keywords: accepts-invalid
          Severity: major
          Priority: P2
         Component: DMD
        AssignedTo: nobody puremagic.com
        ReportedBy: dfj1esp02 sneakemail.com
            Blocks: 2573



09:00:08 PST ---
---
class A { int m=5; }

int main()
{
    A[] a=new A[1];
    immutable(A)[] b=[new immutable(A)];
    assert(b[0].m==5);
    a[]=b[]; //should not pass typecheck
    a[0].m=10;
    assert(b[0].m==5,"fail"); //line 18
    return 0;
}
---

dmd -w -debug -run test.d


---
core.exception.AssertError test.d(18): fail

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Nov 28 2010
next sibling parent d-bugmail puremagic.com writes:
http://d.puremagic.com/issues/show_bug.cgi?id=5284




09:13:10 PST ---
Interesting...
---
class A { int m=5; }

int main()
{
    A[] a=new A[1];
    int[] b=[0];
    a[]=b[];
    return 0;
}
---
this code gives error: cannot implicitly convert expression (b[]) of type int[]
to const(A[]). Seems like the compiler tries to cast right-hand expression to
const(typeof(left-hand expression)), then proceeds with copying.

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Nov 28 2010
prev sibling parent d-bugmail puremagic.com writes:
http://d.puremagic.com/issues/show_bug.cgi?id=5284


Walter Bright <bugzilla digitalmars.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
                 CC|                            |bugzilla digitalmars.com
         Resolution|                            |FIXED



11:53:21 PDT ---
https://github.com/D-Programming-Language/dmd/commit/d4086972a1456f36175e242ea9ab6165f96592b1

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Jun 25 2011