[Issue 3284] New: snn linked programs never release memory back to the OS

[d-bugmail at puremagic.com]

http://d.puremagic.com/issues/show_bug.cgi?id=3284

           Summary: snn linked programs never release memory back to the
                    OS
           Product: D
           Version: 1.046
          Platform: All
        OS/Version: Windows
            Status: NEW
          Severity: blocker
          Priority: P1
         Component: Phobos
        AssignedTo: nobody at puremagic.com
        ReportedBy: dominik at vga.hr


Programs using GC or manual malloc/free never actually release memory back to
the OS (Windows), which causes programs with heavy memory allocation /
deallocation to utilize page swaps heavily and eventually crash.

This is a blocking issue persistent in 1.047 release also (it was not available
in version selection).

You can trivially reproduce this effect by malloc'ing several MB's and
subsequently freeing them - watch the process memory usage before and after it.

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