[Issue 1512] New: GC infinite loop when invalid user code runs.

[d-bugmail at puremagic.com]

http://d.puremagic.com/issues/show_bug.cgi?id=1512

           Summary: GC infinite loop when invalid user code runs.
           Product: D
           Version: 1.014
          Platform: PC
        OS/Version: Windows
            Status: NEW
          Severity: normal
          Priority: P2
         Component: Phobos
        AssignedTo: bugzilla at digitalmars.com
        ReportedBy: davidl at 126.com


class weirdclass
{
        void func()
        {
                delete this;
        }
}

void main()
{
        auto inst=new weirdclass;
        inst.func;
        delete inst;   // GC loops here
}

If I read disassembly correctly:

it loops in phobos code gcx.d

        // Mark each free entry, so it doesn't get scanned
        for (n = 0; n < B_PAGE; n++)
        {
            for (List *list = bucket[n]; list; list = list.next)  // loops here
            {
                pool = findPool(list);
                assert(pool);
                pool.freebits.set(cast(uint)(cast(byte *)list - pool.baseAddr)
/ 16);
            }
        }

Though i didn't recompile phobos to confirm this.


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