ld --as-needed assertion fail, BFD internal error and crash

[Nick Clifton]

Hi Dmitry,

> While building random packages with ld --as-needed to evaluate this
> extension, I found few cases where ld fails within BFD:
> http://sources.redhat.com/bugzilla/show_bug.cgi?id=2434
> Looks like --as-needed is not widely used and therefore not tested well.

The attached patch appears to fix this problem, but I am not sure that 
it is the correct solution.

H.J. - would you care to comment ?  Should we be ignoring 
bfd_link_hash_new type symbols in the way that the patch proposes or is 
it wrong that such symbols reach this point in the code ?

Cheers
   Nick


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