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[PATCH] Fix linker-debugger interface

Hi all,

When unmapping the first object in a namespace, the runtime linker
correctly updates its internal pointer to the start of the list
but does not update the externally visible pointer.  This results
in debuggers being passed pointers to memory that has been freed.
This issue was discovered by Jan Kratochvil [1]

The attached patch fixes.  Ok to commit?

Thanks,
Gary

[1] http://www.cygwin.com/ml/gdb-patches/2012-08/msg00443.html

-- 
http://gbenson.net/

Attachment: patch
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