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Re: [RFC] [PATCH] libltdl error reporting

From: Bob Friesenhahn
Subject: Re: [RFC] [PATCH] libltdl error reporting
Date: Thu, 10 Jun 2010 14:28:26 -0500 (CDT)
User-agent: Alpine 2.01 (GSO 1266 2009-07-14)

On Thu, 10 Jun 2010, Peter O'Gorman wrote:

As I am sure many are aware, libltdl's error reporting is pretty dumb, lt_dlerror() regularly reports things like "file not found" where the actual problem might be something completely different, and a reasonable error string may be readily available from dlerror().

As we have known for quite a while now, libltdl's error reporting is not sane. For example, the preloader always issues a useless error ("file not found") when preloading is not used for the module. Since the loaders were nicely modularized, each loader is tried in turn (issuing an error on failure) until a loader is successful, or there are no more loaders. This is perhaps worse on OS-X where there are two OS APIs for loading modules. I think that some improvements were made, but functionality is still lacking.

Bob Friesenhahn
GraphicsMagick Maintainer,

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