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[PATCH][BZ 19369] resolv: Reset defdname before use in __res_vinit (bug 19369)


Resetting defdname (default domain name) before use in __res_vinit
ensures that the default domain name is correctly set to a default value
when it is not set by the LOCALDOMAIN environment variable or the
"domain" or "search" parameters in resolv.conf

Tested using the steps from
https://sourceware.org/bugzilla/show_bug.cgi?id=19369.
---
 ChangeLog         | 5 +++++
 resolv/res_init.c | 1 +
 2 files changed, 6 insertions(+)

diff --git a/ChangeLog b/ChangeLog
index 8fd2d96..a0efb88 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2015-12-16 Rob Wu <rob@robwu.nl>
+
+	[BZ #19369]
+	* resolv/res_init.c (__res_vinit): Reset defdname before use.
+
 2015-12-15  H.J. Lu  <hongjiu.lu@intel.com>
 
 	[BZ #19367]
diff --git a/resolv/res_init.c b/resolv/res_init.c
index c5dc801..e0b6a80 100644
--- a/resolv/res_init.c
+++ b/resolv/res_init.c
@@ -176,6 +176,7 @@ __res_vinit(res_state statp, int preinit) {
 	}
 
 	statp->nscount = 0;
+	statp->defdname[0] = '\0';
 	statp->ndots = 1;
 	statp->pfcode = 0;
 	statp->_vcsock = -1;
-- 
2.6.2


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