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IFUNC attribute

From: Agner Fog <agner at agner dot org>
To: libc-help at sourceware dot org
Date: Sun, 14 Feb 2010 08:53:51 +0100
Subject: IFUNC attribute

What is the status of the IFUNC feature? http://generic-abi.googlegroups.com/web/ifunc.txt?gda=4pQTgzsAAADStH_FE3xu0aPpZTLIQhlTkAF-CBxpUib99agawbqqi0goJ4G7--yvLPBq95D3B7sGRdr3QrylPkw2aRbXD_gF

Is it official or beta? What versions of Linux and binutils support it? Is it already implemented in libc memory and string functions or are these in a test phase? How do I use it in gcc? How do I use it in gas? Where is the manual?

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