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From: Shankar Unni <shankarunni AT netscape DOT net>
Subject: Re: cygwin, libtool, dlpreopen, and .rdata
Date: Thu, 23 Sep 2004 10:11:16 -0700
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Charles Wilson wrote:

> Actually, *function* addresses are fine; they don't get relocated (at 
> least, not by the runtime-pseudo-reloc gobbledygook).  It's only the 
> addresses of DATA items exported by DLLs that get relocated in this way.
> 
> AND, they get relocated IF AND ONLY IF you are linking to a DLL.  

On x86/PE, anyway. The rules for other platforms and object-file formats 
vary.

Leaving this as "implementation-defined" (may or may not work - 
documented, but how easy is it to track down this documentation?) makes 
the programmer's task more difficult - they can never be sure where they 
can use 'const' on an initialized structure definition. What if function 
addresses are also 'bad' on some other platform?

Gcc should either warn about this usage, or it should silently "do the 
right thing" on each platform based on its capabilities.

But I'm just being picky, being an old compiler fart..


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