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Date: Wed, 16 Sep 2015 20:44:11 +0300
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Subject: Re: dlopen.c: make sure filename is not NULL and not empty
From: "Ozkan Sezer (sezeroz AT gmail DOT com) [via djgpp AT delorie DOT com]" <djgpp AT delorie DOT com>
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On 9/16/15, Juan Manuel Guerrero (juan DOT guerrero AT gmx DOT de) [via
djgpp AT delorie DOT com] <djgpp AT delorie DOT com> wrote:
> Looks ok to me but my man page tells something like this:
> "If filename is NULL, then the returned handle is for the  main  program."
> What shall this imply for DJGPP?

djgpp version doesn't do that. However, dlsym(NULL,somemode) is usually
used to get a global symbol exposed onto the main program and the djgpp
version can do dlsym(RTLD_DEFAULT,"somesym") for that purpose with the
limitation of "somesym" must be from a loaded dxe file which is loaded
with RTLD_GLOBAL.

>  Neitherless we should always test for NULL pointer.
>

Patch is applied to both HEAD and to v2_05_1 branch.