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Re: dlopen(), atexit() SEGV in NetBSD
On Wed, Jul 08, 2009 at 01:10:50PM +0530, Channa wrote:
> I am facing some issue with atexit handler in NetBSD.
> The procedure to reproduce the problem i have explained below:
> Because after a dlopened library that calls atexit() the libexample.so
> is dlclosed, an executable can't
> access a registered handler in the library and causes SEGV.
Well, of course it does. The documentation is quite clear:
dlclose() unlinks and removes the object referred to by handle from the
process address space.
When you access memory which is not mapped into your process address space,
you get a SIGSEGV. AFAICT this is just a bug in your code.
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