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ruby-changes:32967

From: akr <ko1@a...>
Date: Wed, 19 Feb 2014 18:38:29 +0900 (JST)
Subject: [ruby-changes:32967] akr:r45046 (trunk): * ext/socket: Wrap struct addrinfo by struct rb_addrinfo.

akr	2014-02-19 18:38:24 +0900 (Wed, 19 Feb 2014)

  New Revision: 45046

  http://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=rev&revision=45046

  Log:
    * ext/socket: Wrap struct addrinfo by struct rb_addrinfo.

  Modified files:
    trunk/ChangeLog
    trunk/ext/socket/ipsocket.c
    trunk/ext/socket/raddrinfo.c
    trunk/ext/socket/rubysocket.h
    trunk/ext/socket/socket.c
    trunk/ext/socket/udpsocket.c
Index: ChangeLog
===================================================================
--- ChangeLog	(revision 45045)
+++ ChangeLog	(revision 45046)
@@ -1,3 +1,7 @@ https://github.com/ruby/ruby/blob/trunk/ChangeLog#L1
+Wed Feb 19 18:31:48 2014  Tanaka Akira  <akr@f...>
+
+	* ext/socket: Wrap struct addrinfo by struct rb_addrinfo.
+
 Wed Feb 19 17:47:01 2014  Tanaka Akira  <akr@f...>
 
 	* ext/socket/ipsocket.c (ip_s_getaddress): Don't access freed memory.
Index: ext/socket/rubysocket.h
===================================================================
--- ext/socket/rubysocket.h	(revision 45045)
+++ ext/socket/rubysocket.h	(revision 45046)
@@ -278,10 +278,15 @@ int rsock_shutdown_how_arg(VALUE how); https://github.com/ruby/ruby/blob/trunk/ext/socket/rubysocket.h#L278
 
 int rsock_getfamily(int sockfd);
 
-int rb_getaddrinfo(const char *node, const char *service, const struct addrinfo *hints, struct addrinfo **res);
+struct rb_addrinfo {
+  struct addrinfo *ai;
+};
+int rb_getaddrinfo(const char *node, const char *service, const struct addrinfo *hints, struct rb_addrinfo **res);
+void rb_freeaddrinfo(struct rb_addrinfo *ai);
+VALUE rsock_freeaddrinfo(VALUE arg);
 int rb_getnameinfo(const struct sockaddr *sa, socklen_t salen, char *host, size_t hostlen, char *serv, size_t servlen, int flags);
-struct addrinfo *rsock_addrinfo(VALUE host, VALUE port, int socktype, int flags);
-struct addrinfo *rsock_getaddrinfo(VALUE host, VALUE port, struct addrinfo *hints, int socktype_hack);
+struct rb_addrinfo *rsock_addrinfo(VALUE host, VALUE port, int socktype, int flags);
+struct rb_addrinfo *rsock_getaddrinfo(VALUE host, VALUE port, struct addrinfo *hints, int socktype_hack);
 VALUE rsock_fd_socket_addrinfo(int fd, struct sockaddr *addr, socklen_t len);
 VALUE rsock_io_socket_addrinfo(VALUE io, struct sockaddr *addr, socklen_t len);
 
@@ -290,7 +295,7 @@ VALUE rsock_addrinfo_inspect_sockaddr(VA https://github.com/ruby/ruby/blob/trunk/ext/socket/rubysocket.h#L295
 
 VALUE rsock_make_ipaddr(struct sockaddr *addr, socklen_t addrlen);
 VALUE rsock_ipaddr(struct sockaddr *sockaddr, socklen_t sockaddrlen, int norevlookup);
-VALUE rsock_make_hostent(VALUE host, struct addrinfo *addr, VALUE (*ipaddr)(struct sockaddr *, socklen_t));
+VALUE rsock_make_hostent(VALUE host, struct rb_addrinfo *addr, VALUE (*ipaddr)(struct sockaddr *, socklen_t));
 VALUE rsock_inspect_sockaddr(struct sockaddr *addr, socklen_t socklen, VALUE ret);
 socklen_t rsock_sockaddr_len(struct sockaddr *addr);
 VALUE rsock_sockaddr_obj(struct sockaddr *addr, socklen_t len);
Index: ext/socket/udpsocket.c
===================================================================
--- ext/socket/udpsocket.c	(revision 45045)
+++ ext/socket/udpsocket.c	(revision 45046)
@@ -44,7 +44,7 @@ udp_init(int argc, VALUE *argv, VALUE so https://github.com/ruby/ruby/blob/trunk/ext/socket/udpsocket.c#L44
 
 struct udp_arg
 {
-    struct addrinfo *res;
+    struct rb_addrinfo *res;
     int fd;
 };
 
@@ -54,7 +54,7 @@ udp_connect_internal(struct udp_arg *arg https://github.com/ruby/ruby/blob/trunk/ext/socket/udpsocket.c#L54
     int fd = arg->fd;
     struct addrinfo *res;
 
-    for (res = arg->res; res; res = res->ai_next) {
+    for (res = arg->res->ai; res; res = res->ai_next) {
 	if (rsock_connect(fd, res->ai_addr, res->ai_addrlen, 0) >= 0) {
 	    return Qtrue;
 	}
@@ -62,8 +62,6 @@ udp_connect_internal(struct udp_arg *arg https://github.com/ruby/ruby/blob/trunk/ext/socket/udpsocket.c#L62
     return Qfalse;
 }
 
-VALUE rsock_freeaddrinfo(struct addrinfo *addr);
-
 /*
  * call-seq:
  *   udpsocket.connect(host, port) => 0
@@ -113,19 +111,20 @@ static VALUE https://github.com/ruby/ruby/blob/trunk/ext/socket/udpsocket.c#L111
 udp_bind(VALUE sock, VALUE host, VALUE port)
 {
     rb_io_t *fptr;
-    struct addrinfo *res0, *res;
+    struct rb_addrinfo *res0;
+    struct addrinfo *res;
 
     rb_secure(3);
     res0 = rsock_addrinfo(host, port, SOCK_DGRAM, 0);
     GetOpenFile(sock, fptr);
-    for (res = res0; res; res = res->ai_next) {
+    for (res = res0->ai; res; res = res->ai_next) {
 	if (bind(fptr->fd, res->ai_addr, res->ai_addrlen) < 0) {
 	    continue;
 	}
-	freeaddrinfo(res0);
+	rb_freeaddrinfo(res0);
 	return INT2FIX(0);
     }
-    freeaddrinfo(res0);
+    rb_freeaddrinfo(res0);
 
     rsock_sys_fail_host_port("bind(2)", host, port);
 
@@ -160,7 +159,8 @@ udp_send(int argc, VALUE *argv, VALUE so https://github.com/ruby/ruby/blob/trunk/ext/socket/udpsocket.c#L159
     VALUE flags, host, port;
     rb_io_t *fptr;
     int n;
-    struct addrinfo *res0, *res;
+    struct rb_addrinfo *res0;
+    struct addrinfo *res;
     struct rsock_send_arg arg;
 
     if (argc == 2 || argc == 3) {
@@ -173,21 +173,21 @@ udp_send(int argc, VALUE *argv, VALUE so https://github.com/ruby/ruby/blob/trunk/ext/socket/udpsocket.c#L173
     GetOpenFile(sock, fptr);
     arg.fd = fptr->fd;
     arg.flags = NUM2INT(flags);
-    for (res = res0; res; res = res->ai_next) {
+    for (res = res0->ai; res; res = res->ai_next) {
       retry:
 	arg.to = res->ai_addr;
 	arg.tolen = res->ai_addrlen;
 	rsock_maybe_fd_writable(arg.fd);
 	n = (int)BLOCKING_REGION_FD(rsock_sendto_blocking, &arg);
 	if (n >= 0) {
-	    freeaddrinfo(res0);
+	    rb_freeaddrinfo(res0);
 	    return INT2FIX(n);
 	}
 	if (rb_io_wait_writable(fptr->fd)) {
 	    goto retry;
 	}
     }
-    freeaddrinfo(res0);
+    rb_freeaddrinfo(res0);
     rsock_sys_fail_host_port("sendto(2)", host, port);
     return INT2FIX(n);
 }
Index: ext/socket/raddrinfo.c
===================================================================
--- ext/socket/raddrinfo.c	(revision 45045)
+++ ext/socket/raddrinfo.c	(revision 45046)
@@ -174,21 +174,35 @@ nogvl_getaddrinfo(void *arg) https://github.com/ruby/ruby/blob/trunk/ext/socket/raddrinfo.c#L174
 int
 rb_getaddrinfo(const char *node, const char *service,
                const struct addrinfo *hints,
-               struct addrinfo **res)
+               struct rb_addrinfo **res)
 {
+    struct addrinfo *ai;
+    int ret;
+
 #ifdef GETADDRINFO_EMU
-    return getaddrinfo(node, service, hints, res);
+    ret = getaddrinfo(node, service, hints, &ai);
 #else
     struct getaddrinfo_arg arg;
-    int ret;
     MEMZERO(&arg, sizeof arg, 1);
     arg.node = node;
     arg.service = service;
     arg.hints = hints;
-    arg.res = res;
+    arg.res = &ai;
     ret = (int)(VALUE)rb_thread_call_without_gvl(nogvl_getaddrinfo, &arg, RUBY_UBF_IO, 0);
-    return ret;
 #endif
+
+    if (ret == 0) {
+        *res = (struct rb_addrinfo *)xmalloc(sizeof(struct rb_addrinfo));
+        (*res)->ai = ai;
+    }
+    return ret;
+}
+
+void
+rb_freeaddrinfo(struct rb_addrinfo *ai)
+{
+    freeaddrinfo(ai->ai);
+    xfree(ai);
 }
 
 #ifndef GETADDRINFO_EMU
@@ -345,10 +359,10 @@ port_str(VALUE port, char *pbuf, size_t https://github.com/ruby/ruby/blob/trunk/ext/socket/raddrinfo.c#L359
     }
 }
 
-struct addrinfo*
+struct rb_addrinfo*
 rsock_getaddrinfo(VALUE host, VALUE port, struct addrinfo *hints, int socktype_hack)
 {
-    struct addrinfo* res = NULL;
+    struct rb_addrinfo* res = NULL;
     char *hostp, *portp;
     int error;
     char hbuf[NI_MAXHOST], pbuf[NI_MAXSERV];
@@ -373,7 +387,7 @@ rsock_getaddrinfo(VALUE host, VALUE port https://github.com/ruby/ruby/blob/trunk/ext/socket/raddrinfo.c#L387
     return res;
 }
 
-struct addrinfo*
+struct rb_addrinfo*
 rsock_addrinfo(VALUE host, VALUE port, int socktype, int flags)
 {
     struct addrinfo hints;
@@ -474,7 +488,7 @@ rsock_unix_sockaddr_len(VALUE path) https://github.com/ruby/ruby/blob/trunk/ext/socket/raddrinfo.c#L488
 
 struct hostent_arg {
     VALUE host;
-    struct addrinfo* addr;
+    struct rb_addrinfo* addr;
     VALUE (*ipaddr)(struct sockaddr*, socklen_t);
 };
 
@@ -482,7 +496,7 @@ static VALUE https://github.com/ruby/ruby/blob/trunk/ext/socket/raddrinfo.c#L496
 make_hostent_internal(struct hostent_arg *arg)
 {
     VALUE host = arg->host;
-    struct addrinfo* addr = arg->addr;
+    struct addrinfo* addr = arg->addr->ai;
     VALUE (*ipaddr)(struct sockaddr*, socklen_t) = arg->ipaddr;
 
     struct addrinfo *ai;
@@ -522,14 +536,15 @@ make_hostent_internal(struct hostent_arg https://github.com/ruby/ruby/blob/trunk/ext/socket/raddrinfo.c#L536
 }
 
 VALUE
-rsock_freeaddrinfo(struct addrinfo *addr)
+rsock_freeaddrinfo(VALUE arg)
 {
-    freeaddrinfo(addr);
+    struct rb_addrinfo *addr = (struct rb_addrinfo *)arg;
+    rb_freeaddrinfo(addr);
     return Qnil;
 }
 
 VALUE
-rsock_make_hostent(VALUE host, struct addrinfo *addr, VALUE (*ipaddr)(struct sockaddr *, socklen_t))
+rsock_make_hostent(VALUE host, struct rb_addrinfo *addr, VALUE (*ipaddr)(struct sockaddr *, socklen_t))
 {
     struct hostent_arg arg;
 
@@ -639,12 +654,13 @@ rsock_addrinfo_new(struct sockaddr *addr https://github.com/ruby/ruby/blob/trunk/ext/socket/raddrinfo.c#L654
     return a;
 }
 
-static struct addrinfo *
+static struct rb_addrinfo *
 call_getaddrinfo(VALUE node, VALUE service,
                  VALUE family, VALUE socktype, VALUE protocol, VALUE flags,
                  int socktype_hack)
 {
-    struct addrinfo hints, *res;
+    struct addrinfo hints;
+    struct rb_addrinfo *res;
 
     MEMZERO(&hints, struct addrinfo, 1);
     hints.ai_family = NIL_P(family) ? PF_UNSPEC : rsock_family_arg(family);
@@ -672,21 +688,21 @@ init_addrinfo_getaddrinfo(rb_addrinfo_t https://github.com/ruby/ruby/blob/trunk/ext/socket/raddrinfo.c#L688
                           VALUE family, VALUE socktype, VALUE protocol, VALUE flags,
                           VALUE inspectnode, VALUE inspectservice)
 {
-    struct addrinfo *res = call_getaddrinfo(node, service, family, socktype, protocol, flags, 1);
+    struct rb_addrinfo *res = call_getaddrinfo(node, service, family, socktype, protocol, flags, 1);
     VALUE canonname;
-    VALUE inspectname = rb_str_equal(node, inspectnode) ? Qnil : make_inspectname(inspectnode, inspectservice, res);
+    VALUE inspectname = rb_str_equal(node, inspectnode) ? Qnil : make_inspectname(inspectnode, inspectservice, res->ai);
 
     canonname = Qnil;
-    if (res->ai_canonname) {
-        canonname = rb_tainted_str_new_cstr(res->ai_canonname);
+    if (res->ai->ai_canonname) {
+        canonname = rb_tainted_str_new_cstr(res->ai->ai_canonname);
         OBJ_FREEZE(canonname);
     }
 
-    init_addrinfo(rai, res->ai_addr, res->ai_addrlen,
+    init_addrinfo(rai, res->ai->ai_addr, res->ai->ai_addrlen,
                   NUM2INT(family), NUM2INT(socktype), NUM2INT(protocol),
                   canonname, inspectname);
 
-    freeaddrinfo(res);
+    rb_freeaddrinfo(res);
 }
 
 static VALUE
@@ -742,21 +758,22 @@ addrinfo_firstonly_new(VALUE node, VALUE https://github.com/ruby/ruby/blob/trunk/ext/socket/raddrinfo.c#L758
     VALUE canonname;
     VALUE inspectname;
 
-    struct addrinfo *res = call_getaddrinfo(node, service, family, socktype, protocol, flags, 0);
+    struct rb_addrinfo *res = call_getaddrinfo(node, service, family, socktype, protocol, flags, 0);
 
-    inspectname = make_inspectname(node, service, res);
+    inspectname = make_inspectname(node, service, res->ai);
 
     canonname = Qnil;
-    if (res->ai_canonname) {
-        canonname = rb_tainted_str_new_cstr(res->ai_canonname);
+    if (res->ai->ai_canonname) {
+        canonname = rb_tainted_str_new_cstr(res->ai->ai_canonname);
         OBJ_FREEZE(canonname);
     }
 
-    ret = rsock_addrinfo_new(res->ai_addr, res->ai_addrlen,
-                             res->ai_family, res->ai_socktype, res->ai_protocol,
+    ret = rsock_addrinfo_new(res->ai->ai_addr, res->ai->ai_addrlen,
+                             res->ai->ai_family, res->ai->ai_socktype,
+                             res->ai->ai_protocol,
                              canonname, inspectname);
 
-    freeaddrinfo(res);
+    rb_freeaddrinfo(res);
     return ret;
 }
 
@@ -767,12 +784,12 @@ addrinfo_list_new(VALUE node, VALUE serv https://github.com/ruby/ruby/blob/trunk/ext/socket/raddrinfo.c#L784
     struct addrinfo *r;
     VALUE inspectname;
 
-    struct addrinfo *res = call_getaddrinfo(node, service, family, socktype, protocol, flags, 0);
+    struct rb_addrinfo *res = call_getaddrinfo(node, service, family, socktype, protocol, flags, 0);
 
-    inspectname = make_inspectname(node, service, res);
+    inspectname = make_inspectname(node, service, res->ai);
 
     ret = rb_ary_new();
-    for (r = res; r; r = r->ai_next) {
+    for (r = res->ai; r; r = r->ai_next) {
         VALUE addr;
         VALUE canonname = Qnil;
 
@@ -788,7 +805,7 @@ addrinfo_list_new(VALUE node, VALUE serv https://github.com/ruby/ruby/blob/trunk/ext/socket/raddrinfo.c#L805
         rb_ary_push(ret, addr);
     }
 
-    freeaddrinfo(res);
+    rb_freeaddrinfo(res);
     return ret;
 }
 
@@ -1513,7 +1530,7 @@ addrinfo_mload(VALUE self, VALUE ary) https://github.com/ruby/ruby/blob/trunk/ext/socket/raddrinfo.c#L1530
       default:
       {
         VALUE pair = rb_convert_type(v, T_ARRAY, "Array", "to_ary");
-        struct addrinfo *res;
+        struct rb_addrinfo *res;
         int flags = AI_NUMERICHOST;
 #ifdef AI_NUMERICSERV
         flags |= AI_NUMERICSERV;
@@ -1522,8 +1539,8 @@ addrinfo_mload(VALUE self, VALUE ary) https://github.com/ruby/ruby/blob/trunk/ext/socket/raddrinfo.c#L1539
                                INT2NUM(pfamily), INT2NUM(socktype), INT2NUM(protocol),
                                INT2NUM(flags), 1);
 
-        len = res->ai_addrlen;
-        memcpy(&ss, res->ai_addr, res->ai_addrlen);
+        len = res->ai->ai_addrlen;
+        memcpy(&ss, res->ai->ai_addr, res->ai->ai_addrlen);
         break;
       }
     }
Index: ext/socket/ipsocket.c
===================================================================
--- ext/socket/ipsocket.c	(revision 45045)
+++ ext/socket/ipsocket.c	(revision 45046)
@@ -15,7 +15,7 @@ struct inetsock_arg https://github.com/ruby/ruby/blob/trunk/ext/socket/ipsocket.c#L15
     VALUE sock;
     struct {
 	VALUE host, serv;
-	struct addrinfo *res;
+	struct rb_addrinfo *res;
     } remote, local;
     int type;
     int fd;
@@ -25,11 +25,11 @@ static VALUE https://github.com/ruby/ruby/blob/trunk/ext/socket/ipsocket.c#L25
 inetsock_cleanup(struct inetsock_arg *arg)
 {
     if (arg->remote.res) {
-	freeaddrinfo(arg->remote.res);
+	rb_freeaddrinfo(arg->remote.res);
 	arg->remote.res = 0;
     }
     if (arg->local.res) {
-	freeaddrinfo(arg->local.res);
+	rb_freeaddrinfo(arg->local.res);
 	arg->local.res = 0;
     }
     if (arg->fd >= 0) {
@@ -57,14 +57,14 @@ init_inetsock_internal(struct inetsock_a https://github.com/ruby/ruby/blob/trunk/ext/socket/ipsocket.c#L57
     }
 
     arg->fd = fd = -1;
-    for (res = arg->remote.res; res; res = res->ai_next) {
+    for (res = arg->remote.res->ai; res; res = res->ai_next) {
 #if !defined(INET6) && defined(AF_INET6)
 	if (res->ai_family == AF_INET6)
 	    continue;
 #endif
         lres = NULL;
         if (arg->local.res) {
-            for (lres = arg->local.res; lres; lres = lres->ai_next) {
+            for (lres = arg->local.res->ai; lres; lres = lres->ai_next) {
                 if (lres->ai_family == res->ai_family)
                     break;
             }
@@ -73,7 +73,7 @@ init_inetsock_internal(struct inetsock_a https://github.com/ruby/ruby/blob/trunk/ext/socket/ipsocket.c#L73
                     continue;
                 /* Use a different family local address if no choice, this
                  * will cause EAFNOSUPPORT. */
-                lres = arg->local.res;
+                lres = arg->local.res->ai;
             }
         }
 	status = rsock_socket(res->ai_family,res->ai_socktype,res->ai_protocol);
@@ -304,12 +304,12 @@ static VALUE https://github.com/ruby/ruby/blob/trunk/ext/socket/ipsocket.c#L304
 ip_s_getaddress(VALUE obj, VALUE host)
 {
     union_sockaddr addr;
-    struct addrinfo *res = rsock_addrinfo(host, Qnil, SOCK_STREAM, 0);
-    socklen_t len = res->ai_addrlen;
+    struct rb_addrinfo *res = rsock_addrinfo(host, Qnil, SOCK_STREAM, 0);
+    socklen_t len = res->ai->ai_addrlen;
 
     /* just take the first one */
-    memcpy(&addr, res->ai_addr, len);
-    freeaddrinfo(res);
+    memcpy(&addr, res->ai->ai_addr, len);
+    rb_freeaddrinfo(res);
 
     return rsock_make_ipaddr(&addr.addr, len);
 }
Index: ext/socket/socket.c
===================================================================
--- ext/socket/socket.c	(revision 45045)
+++ ext/socket/socket.c	(revision 45046)
@@ -1055,7 +1055,7 @@ sock_gethostname(VALUE obj) https://github.com/ruby/ruby/blob/trunk/ext/socket/socket.c#L1055
 #endif
 
 static VALUE
-make_addrinfo(struct addrinfo *res0, int norevlookup)
+make_addrinfo(struct rb_addrinfo *res0, int norevlookup)
 {
     VALUE base, ary;
     struct addrinfo *res;
@@ -1064,7 +1064,7 @@ make_addrinfo(struct addrinfo *res0, int https://github.com/ruby/ruby/blob/trunk/ext/socket/socket.c#L1064
 	rb_raise(rb_eSocket, "host not found");
     }
     base = rb_ary_new();
-    for (res = res0; res; res = res->ai_next) {
+    for (res = res0->ai; res; res = res->ai_next) {
 	ary = rsock_ipaddr(res->ai_addr, res->ai_addrlen, norevlookup);
 	if (res->ai_canonname) {
 	    RARRAY_PTR(ary)[2] = rb_str_new2(res->ai_canonname);
@@ -1287,7 +1287,8 @@ static VALUE https://github.com/ruby/ruby/blob/trunk/ext/socket/socket.c#L1287
 sock_s_getaddrinfo(int argc, VALUE *argv)
 {
     VALUE host, port, family, socktype, protocol, flags, ret, revlookup;
-    struct addrinfo hints, *res;
+    struct addrinfo hints;
+    struct rb_addrinfo *res;
     int norevlookup;
 
     rb_scan_args(argc, argv, "25", &host, &port, &family, &socktype, &protocol, &flags, &revlookup);
@@ -1310,7 +1311,7 @@ sock_s_getaddrinfo(int argc, VALUE *argv https://github.com/ruby/ruby/blob/trunk/ext/socket/socket.c#L1311
     res = rsock_getaddrinfo(host, port, &hints, 0);
 
     ret = make_addrinfo(res, norevlookup);
-    freeaddrinfo(res);
+    rb_freeaddrinfo(res);
     return ret;
 }
 
@@ -1343,7 +1344,8 @@ sock_s_getnameinfo(int argc, VALUE *argv https://github.com/ruby/ruby/blob/trunk/ext/socket/socket.c#L1344
     char *hptr, *pptr;
     char hbuf[1024], pbuf[1024];
     int fl;
-    struct addrinfo hints, *res = NULL, *r;
+    struct rb_addrinfo *res = NULL;
+    struct addrinfo hints, *r;
     int error;
     union_sockaddr ss;
     struct sockaddr *sap;
@@ -1428,8 +1430,8 @@ sock_s_getnameinfo(int argc, VALUE *argv https://github.com/ruby/ruby/blob/trunk/ext/socket/socket.c#L1430
         hints.ai_family = NIL_P(af) ? PF_UNSPEC : rsock_family_arg(af);
 	error = rb_getaddrinfo(hptr, pptr, &hints, &res);
 	if (error) goto error_exit_addr;
-	sap = res->ai_addr;
-        salen = res->ai_addrlen;
+	sap = res->ai->ai_addr;
+        salen = res->ai->ai_addrlen;
     }
     else {
 	rb_raise(rb_eTypeError, "expecting String or Array");
@@ -1440,7 +1442,7 @@ sock_s_getnameinfo(int argc, VALUE *argv https://github.com/ruby/ruby/blob/trunk/ext/socket/socket.c#L1442
 			   pbuf, sizeof(pbuf), fl);
     if (error) goto error_exit_name;
     if (res) {
-	for (r = res->ai_next; r; r = r->ai_next) {
+	for (r = res->ai->ai_next; r; r = r->ai_next) {
 	    char hbuf2[1024], pbuf2[1024];
 
 	    sap = r->ai_addr;
@@ -1449,20 +1451,20 @@ sock_s_getnameinfo(int argc, VALUE *argv https://github.com/ruby/ruby/blob/trunk/ext/socket/socket.c#L1451
 				   pbuf2, sizeof(pbuf2), fl);
 	    if (error) goto error_exit_name;
 	    if (strcmp(hbuf, hbuf2) != 0|| strcmp(pbuf, pbuf2) != 0) {
-		freeaddrinfo(res);
+		rb_freeaddrinfo(res);
 		rb_raise(rb_eSocket, "sockaddr resolved to multiple nodename");
 	    }
 	}
-	freeaddrinfo(res);
+	rb_freeaddrinfo(res);
     }
     return rb_assoc_new(rb_str_new2(hbuf), rb_str_new2(pbuf));
 
   error_exit_addr:
-    if (res) freeaddrinfo(res);
+    if (res) rb_freeaddrinfo(res);
     rsock_raise_socket_error("getaddrinfo", error);
 
   error_exit_name:
-    if (res) freeaddrinfo(res);
+    if (res) rb_freeaddrinfo(res);
     rsock_raise_socket_error("getnameinfo", error);
 
     UNREACHABLE;
@ (... truncated)

--
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