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Date: Tue, 02 Feb 2010 14:34:49 +0000
From: Dave Korn <dave DOT korn DOT cygwin AT googlemail DOT com>
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Subject: Re: dlclose not calling destructors of static variables.
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On 02/02/2010 08:35, Andrew West wrote:

>>> Looking at one of the libraries in my code that fails I get ( with the
>>> atexit at 0x78351c9 )
>>>
>>> remove_dll_atexit;
>>> m.AllocationBase = 0x7820000
>>> m.AllocationBase + m.RegionSize = 0x7824000

> I've attached the objdump -h output. Looks like the library was
> relocated in memory, but if I do;
> 
> 0x63940000 + (  0x78351c9 - 0x7820000 ) = 0x639551c9


>   0 .text         00061380  63941000  63941000  00000600  2**4
>                   CONTENTS, ALLOC, LOAD, CODE, DATA

  Thanks, that confirms what I wanted to find out: it's possible for the .text
section to be broken into multiple regions.  I was going to go on to speculate
about whether it was a reloc or pseudo-reloc causing it in some way (maybe the
region stops when it hits an altered COW page or somesuch), but cgf found a
solution using only the AllocationBase.

    cheers,
      DaveK

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