From: Timo Teräs <timo.teras@iki.fi>
Date: Fri, 20 Jun 2014 10:53:23 +0000 (+0300)
Subject: fix gethostby*_r result pointer value on error
X-Git-Tag: v1.1.3~13
X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=fe82bb9b921be34370e6b71a1c6f062c20999ae0;p=oweals%2Fmusl.git

fix gethostby*_r result pointer value on error

according to the documentation in the man pages, the GNU extension
functions gethostbyaddr_r, gethostbyname_r and gethostbyname2_r are
guaranteed to set the result pointer to NULL in case of error or no
result.
---

diff --git a/src/network/gethostbyaddr_r.c b/src/network/gethostbyaddr_r.c
index 73e76447..66e03309 100644
--- a/src/network/gethostbyaddr_r.c
+++ b/src/network/gethostbyaddr_r.c
@@ -18,6 +18,8 @@ int gethostbyaddr_r(const void *a, socklen_t l, int af,
 	socklen_t sl = af==AF_INET6 ? sizeof sa.sin6 : sizeof sa.sin;
 	int i;
 
+	*res = 0;
+
 	/* Load address argument into sockaddr structure */
 	if (af==AF_INET6 && l==16) memcpy(&sa.sin6.sin6_addr, a, 16);
 	else if (af==AF_INET && l==4) memcpy(&sa.sin.sin_addr, a, 4);
diff --git a/src/network/gethostbyname2_r.c b/src/network/gethostbyname2_r.c
index aa8b0a9e..81f71d21 100644
--- a/src/network/gethostbyname2_r.c
+++ b/src/network/gethostbyname2_r.c
@@ -17,6 +17,7 @@ int gethostbyname2_r(const char *name, int af,
 	int i, cnt;
 	size_t align, need;
 
+	*res = 0;
 	cnt = __lookup_name(addrs, canon, name, af, AI_CANONNAME);
 	if (cnt<0) switch (cnt) {
 	case EAI_NONAME: