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Partial backport of:
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commit 17c199ee92e4ca8a34a47c42924608a25a444eb2
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Author: Joseph Myers <joseph@codesourcery.com>
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Date: Wed Jun 17 20:08:22 2015 +0000
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Fix gethostbyaddr in6addr_any, in6addr_loopback namespace (bug 18532).
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The conform/Makefile changes have been omitted because glibc 2.17 did
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not have linknamespace tests.
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diff --git a/include/netinet/in.h b/include/netinet/in.h
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index 6fb5c86de999ba82..5e377469e782a5b1 100644
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--- a/include/netinet/in.h
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+++ b/include/netinet/in.h
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@@ -5,7 +5,11 @@
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#ifndef _ISOMAC
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libc_hidden_proto (bindresvport)
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libc_hidden_proto (in6addr_loopback)
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+extern __typeof (in6addr_loopback) __in6addr_loopback;
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+libc_hidden_proto (__in6addr_loopback)
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libc_hidden_proto (in6addr_any)
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+extern __typeof (in6addr_any) __in6addr_any;
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+libc_hidden_proto (__in6addr_any)
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#endif
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#endif
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diff --git a/inet/gethstbyad_r.c b/inet/gethstbyad_r.c
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index d8e4988a312a0799..5ae854b4f91e72ad 100644
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--- a/inet/gethstbyad_r.c
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+++ b/inet/gethstbyad_r.c
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@@ -32,7 +32,7 @@
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be performed. */
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#define PREPROCESS \
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if (len == sizeof (struct in6_addr) \
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- && __builtin_expect (memcmp (&in6addr_any, addr, \
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+ && __builtin_expect (memcmp (&__in6addr_any, addr, \
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sizeof (struct in6_addr)), 1) == 0) \
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{ \
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*h_errnop = HOST_NOT_FOUND; \
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diff --git a/inet/in6_addr.c b/inet/in6_addr.c
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index 558b375e46dc62dc..03fbb85803e3d0b7 100644
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--- a/inet/in6_addr.c
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+++ b/inet/in6_addr.c
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@@ -18,9 +18,13 @@
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#include <netinet/in.h>
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-const struct in6_addr in6addr_any =
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+const struct in6_addr __in6addr_any =
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{ { { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 } } };
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-libc_hidden_data_def (in6addr_any)
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-const struct in6_addr in6addr_loopback =
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+libc_hidden_data_def (__in6addr_any)
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+weak_alias (__in6addr_any, in6addr_any)
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+libc_hidden_data_weak (in6addr_any)
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+const struct in6_addr __in6addr_loopback =
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{ { { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1 } } };
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-libc_hidden_data_def (in6addr_loopback)
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+libc_hidden_data_def (__in6addr_loopback)
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+weak_alias (__in6addr_loopback, in6addr_loopback)
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+libc_hidden_data_weak (in6addr_loopback)
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