There are a few changes in glibc-2.10 that might make your software fail to build with it, please refer to my blog post  if you're not sure what the problem is. Also make sure to fix it rather than sidestepping the issue  and .
And no I don't usually provide emerge --info with these bugs because they are caused by glibc-2.10!
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This was applied.
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But would this have been more appropiate?
Flameeyes, can you check? The first one was applied, not this one.