Vendor import of BIND 9.3.3

1 files changed, 19 insertions, 6 deletions

diff --git a/contrib/bind9/lib/bind/irs/gai_strerror.c b/contrib/bind9/lib/bind/irs/gai_strerror.c
index 6aeaaa1..0492f8f 100644
--- a/contrib/bind9/lib/bind/irs/gai_strerror.c
+++ b/contrib/bind9/lib/bind/irs/gai_strerror.c
@@ -66,18 +66,26 @@ gai_strerror(int ecode) {
 
 #ifdef DO_PTHREADS
         if (!once) {
-                pthread_mutex_lock(&lock);
-                if (!once++)
-                        pthread_key_create(&key, free);
-                pthread_mutex_unlock(&lock);
+                if (pthread_mutex_lock(&lock) != 0)
+			goto unknown;
+                if (!once) {
+                        if (pthread_key_create(&key, free) != 0)
+				goto unknown;
+			once = 1;
+		}
+                if (pthread_mutex_unlock(&lock) != 0)
+			goto unknown;
         }
 
 	buf = pthread_getspecific(key);
         if (buf == NULL) {
 		buf = malloc(EAI_BUFSIZE);
                 if (buf == NULL)
-                        return ("unknown error");
-                pthread_setspecific(key, buf);
+                        goto unknown;
+                if (pthread_setspecific(key, buf) != 0) {
+			free(buf);
+			goto unknown;
+		}
         }
 #endif
 	/* 
@@ -86,4 +94,9 @@ gai_strerror(int ecode) {
 	 */
 	sprintf(buf, "%s: %d", gai_errlist[gai_nerr - 1], ecode);
 	return (buf);
+
+#ifdef DO_PTHREADS
+ unknown:
+	return ("unknown error");
+#endif
 }