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[PATCH] Fix multiple definitions of __nss_*_database (bug 22918)
- From: Andreas Schwab <schwab at linux-m68k dot org>
- To: libc-alpha at sourceware dot org
- Date: Sat, 03 Mar 2018 16:51:45 +0100
- Subject: [PATCH] Fix multiple definitions of __nss_*_database (bug 22918)
- Authentication-results: sourceware.org; auth=none
[BZ #22918]
* nss/nsswitch.h (DEFINE_DATABASE): Don't define __nss_*_database.
* nss/nsswitch.c (DEFINE_DATABASE): Define __nss_*_database here.
* nscd/gai.c (__nss_hosts_database): Readd definition.
* posix/tst-rfc3484.c (__nss_hosts_database): Likewise.
* posix/tst-rfc3484-3.c (__nss_hosts_database): Likewise.
* posix/tst-rfc3484-2.c (__nss_hosts_database): Likewise.
---
nscd/gai.c | 3 +++
nss/nsswitch.c | 2 +-
nss/nsswitch.h | 8 ++++----
posix/tst-rfc3484-2.c | 1 +
posix/tst-rfc3484-3.c | 1 +
posix/tst-rfc3484.c | 1 +
6 files changed, 11 insertions(+), 5 deletions(-)
diff --git a/nscd/gai.c b/nscd/gai.c
index d081747797..576fd0045b 100644
--- a/nscd/gai.c
+++ b/nscd/gai.c
@@ -45,3 +45,6 @@
#ifdef HAVE_LIBIDN
# include <libidn/idn-stub.c>
#endif
+
+/* Some variables normally defined in libc. */
+service_user *__nss_hosts_database attribute_hidden;
diff --git a/nss/nsswitch.c b/nss/nsswitch.c
index 4b8deedabf..ee46f24424 100644
--- a/nss/nsswitch.c
+++ b/nss/nsswitch.c
@@ -62,7 +62,7 @@ static service_library *nss_new_service (name_database *database,
/* Declare external database variables. */
#define DEFINE_DATABASE(name) \
- extern service_user *__nss_##name##_database attribute_hidden; \
+ service_user *__nss_##name##_database attribute_hidden; \
weak_extern (__nss_##name##_database)
#include "databases.def"
#undef DEFINE_DATABASE
diff --git a/nss/nsswitch.h b/nss/nsswitch.h
index eccb535ef5..63573b9ebc 100644
--- a/nss/nsswitch.h
+++ b/nss/nsswitch.h
@@ -226,10 +226,10 @@ libc_hidden_proto (__nss_hostname_digits_dots)
#define MAX_NR_ADDRS 48
/* Prototypes for __nss_*_lookup2 functions. */
-#define DEFINE_DATABASE(arg) \
- service_user *__nss_##arg##_database attribute_hidden; \
- int __nss_##arg##_lookup2 (service_user **, const char *, \
- const char *, void **); \
+#define DEFINE_DATABASE(arg) \
+ extern service_user *__nss_##arg##_database attribute_hidden; \
+ int __nss_##arg##_lookup2 (service_user **, const char *, \
+ const char *, void **); \
libc_hidden_proto (__nss_##arg##_lookup2)
#include "databases.def"
#undef DEFINE_DATABASE
diff --git a/posix/tst-rfc3484-2.c b/posix/tst-rfc3484-2.c
index f509534ca9..8c64ac59ff 100644
--- a/posix/tst-rfc3484-2.c
+++ b/posix/tst-rfc3484-2.c
@@ -58,6 +58,7 @@ _res_hconf_init (void)
#undef USE_NSCD
#include "../sysdeps/posix/getaddrinfo.c"
+service_user *__nss_hosts_database attribute_hidden;
/* This is the beginning of the real test code. The above defines
(among other things) the function rfc3484_sort. */
diff --git a/posix/tst-rfc3484-3.c b/posix/tst-rfc3484-3.c
index ae44087a10..1c61aaf844 100644
--- a/posix/tst-rfc3484-3.c
+++ b/posix/tst-rfc3484-3.c
@@ -58,6 +58,7 @@ _res_hconf_init (void)
#undef USE_NSCD
#include "../sysdeps/posix/getaddrinfo.c"
+service_user *__nss_hosts_database attribute_hidden;
/* This is the beginning of the real test code. The above defines
(among other things) the function rfc3484_sort. */
diff --git a/posix/tst-rfc3484.c b/posix/tst-rfc3484.c
index 7f191abbbc..8f45848e44 100644
--- a/posix/tst-rfc3484.c
+++ b/posix/tst-rfc3484.c
@@ -58,6 +58,7 @@ _res_hconf_init (void)
#undef USE_NSCD
#include "../sysdeps/posix/getaddrinfo.c"
+service_user *__nss_hosts_database attribute_hidden;
/* This is the beginning of the real test code. The above defines
(among other things) the function rfc3484_sort. */
--
2.16.2
--
Andreas Schwab, schwab@linux-m68k.org
GPG Key fingerprint = 58CA 54C7 6D53 942B 1756 01D3 44D5 214B 8276 4ED5
"And now for something completely different."