[PATCH] getaddrinfo: Always allocate canonical name on the heap

[Florian Weimer]

On 06/02/2017 11:26 PM, Joseph Myers wrote:
> I'm still seeing a localplt failure for strdup even after commit 
> 6257fcfd58479f6b7ae0fdde045b9ff144d543da.
> 
> https://sourceware.org/ml/libc-testresults/2017-q2/msg00276.html
> 
> (The strdup@plt reference is from gaih_inet.constprop.6, at least on 
> x86_64.  It seems there is one plain strdup reference in 
> sysdeps/posix/getaddrinfo.c.)

Right.  I figured out why I wasn't seeing this (localplt doesn't check
for local function relocation relocations in general, only PLT entries,
so -z blinds it), and verified that the attached patch fixes the
remaining failure.  Committed.

Thanks,
Florian
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