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-rw-r--r--docs/libcurl/curl_easy_setopt.34
-rw-r--r--docs/libcurl/opts/CURLOPT_RESOLVER_START_DATA.363
-rw-r--r--docs/libcurl/opts/CURLOPT_RESOLVER_START_FUNCTION.383
-rw-r--r--docs/libcurl/opts/Makefile.inc2
-rw-r--r--docs/libcurl/symbols-in-versions2
-rw-r--r--include/curl/curl.h10
-rw-r--r--include/curl/typecheck-gcc.h13
-rw-r--r--lib/hostip.c12
-rw-r--r--lib/setopt.c15
-rw-r--r--lib/urldata.h4
-rw-r--r--packages/OS400/curl.inc.in4
-rw-r--r--tests/data/Makefile.inc2
-rw-r--r--tests/data/test65550
-rw-r--r--tests/libtest/Makefile.inc5
-rw-r--r--tests/libtest/lib655.c112
-rwxr-xr-xtests/libtest/mk-lib1521.pl1
16 files changed, 379 insertions, 3 deletions
diff --git a/docs/libcurl/curl_easy_setopt.3 b/docs/libcurl/curl_easy_setopt.3
index c7bd524ad..1efb467e6 100644
--- a/docs/libcurl/curl_easy_setopt.3
+++ b/docs/libcurl/curl_easy_setopt.3
@@ -139,6 +139,10 @@ Callback for wildcard matching. See \fICURLOPT_FNMATCH_FUNCTION(3)\fP
Data pointer to pass to the wildcard matching callback. See \fICURLOPT_FNMATCH_DATA(3)\fP
.IP CURLOPT_SUPPRESS_CONNECT_HEADERS
Suppress proxy CONNECT response headers from user callbacks. See \fICURLOPT_SUPPRESS_CONNECT_HEADERS(3)\fP
+.IP CURLOPT_RESOLVER_START_FUNCTION
+Callback to be called before a new resolve request is started. See \fICURLOPT_RESOLVER_START_FUNCTION(3)\fP
+.IP CURLOPT_RESOLVER_START_DATA
+Data pointer to pass to resolver start callback. See \fICURLOPT_RESOLVER_START_DATA(3)\fP
.SH ERROR OPTIONS
.IP CURLOPT_ERRORBUFFER
Error message buffer. See \fICURLOPT_ERRORBUFFER(3)\fP
diff --git a/docs/libcurl/opts/CURLOPT_RESOLVER_START_DATA.3 b/docs/libcurl/opts/CURLOPT_RESOLVER_START_DATA.3
new file mode 100644
index 000000000..4d8f8793e
--- /dev/null
+++ b/docs/libcurl/opts/CURLOPT_RESOLVER_START_DATA.3
@@ -0,0 +1,63 @@
+.\" **************************************************************************
+.\" * _ _ ____ _
+.\" * Project ___| | | | _ \| |
+.\" * / __| | | | |_) | |
+.\" * | (__| |_| | _ <| |___
+.\" * \___|\___/|_| \_\_____|
+.\" *
+.\" * Copyright (C) 1998 - 2018, Daniel Stenberg, <daniel@haxx.se>, et al.
+.\" *
+.\" * This software is licensed as described in the file COPYING, which
+.\" * you should have received as part of this distribution. The terms
+.\" * are also available at https://curl.haxx.se/docs/copyright.html.
+.\" *
+.\" * You may opt to use, copy, modify, merge, publish, distribute and/or sell
+.\" * copies of the Software, and permit persons to whom the Software is
+.\" * furnished to do so, under the terms of the COPYING file.
+.\" *
+.\" * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+.\" * KIND, either express or implied.
+.\" *
+.\" **************************************************************************
+.\"
+.TH CURLOPT_RESOLVER_START_DATA 3 "14 Feb 2018" "libcurl 7.59.0" "curl_easy_setopt options"
+.SH NAME
+CURLOPT_RESOLVER_START_DATA \- custom pointer passed to the resolver start callback
+.SH SYNOPSIS
+#include <curl/curl.h>
+
+CURLcode curl_easy_setopt(CURL *handle, CURLOPT_RESOLVER_START_DATA, void *pointer);
+.SH DESCRIPTION
+Pass a \fIpointer\fP that will be untouched by libcurl and passed as the third
+argument in the resolver start callback set with
+\fICURLOPT_RESOLVER_START_FUNCTION(3)\fP.
+.SH DEFAULT
+NULL
+.SH PROTOCOLS
+All
+.SH EXAMPLE
+.nf
+static int resolver_start_cb(void *resolver_state, void *reserved,
+ void *userdata)
+{
+ (void)reserved;
+ printf("Received resolver_state=%p userdata=%p\\n",
+ resolver_state, userdata);
+ return 0;
+}
+
+CURL *curl = curl_easy_init();
+if(curl) {
+ curl_easy_setopt(curl, CURLOPT_RESOLVER_START_FUNCTION, resolver_start_cb);
+ curl_easy_setopt(curl, CURLOPT_RESOLVER_START_DATA, curl);
+ curl_easy_setopt(curl, CURLOPT_URL, "http://example.com");
+ curl_easy_perform(curl);
+ curl_easy_cleanup(curl);
+}
+.fi
+.SH AVAILABILITY
+Added in 7.59.0
+.SH RETURN VALUE
+Returns CURLE_OK
+.SH "SEE ALSO"
+.BR CURLOPT_RESOLVER_START_FUNCTION "(3) "
diff --git a/docs/libcurl/opts/CURLOPT_RESOLVER_START_FUNCTION.3 b/docs/libcurl/opts/CURLOPT_RESOLVER_START_FUNCTION.3
new file mode 100644
index 000000000..fd11910ce
--- /dev/null
+++ b/docs/libcurl/opts/CURLOPT_RESOLVER_START_FUNCTION.3
@@ -0,0 +1,83 @@
+.\" **************************************************************************
+.\" * _ _ ____ _
+.\" * Project ___| | | | _ \| |
+.\" * / __| | | | |_) | |
+.\" * | (__| |_| | _ <| |___
+.\" * \___|\___/|_| \_\_____|
+.\" *
+.\" * Copyright (C) 1998 - 2018, Daniel Stenberg, <daniel@haxx.se>, et al.
+.\" *
+.\" * This software is licensed as described in the file COPYING, which
+.\" * you should have received as part of this distribution. The terms
+.\" * are also available at https://curl.haxx.se/docs/copyright.html.
+.\" *
+.\" * You may opt to use, copy, modify, merge, publish, distribute and/or sell
+.\" * copies of the Software, and permit persons to whom the Software is
+.\" * furnished to do so, under the terms of the COPYING file.
+.\" *
+.\" * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+.\" * KIND, either express or implied.
+.\" *
+.\" **************************************************************************
+.\"
+.TH CURLOPT_RESOLVER_START_FUNCTION 3 "14 Feb 2018" "libcurl 7.59.0" "curl_easy_setopt options"
+.SH NAME
+CURLOPT_RESOLVER_START_FUNCTION \- set callback to be called before a new resolve request is started
+.SH SYNOPSIS
+.nf
+#include <curl/curl.h>
+
+int resolver_start_cb(void *resolver_state, void *reserved, void *userdata);
+
+CURLcode curl_easy_setopt(CURL *handle,
+ CURLOPT_RESOLVER_START_FUNCTION,
+ resolver_start_cb);
+.SH DESCRIPTION
+Pass a pointer to your callback function, which should match the prototype
+shown above.
+
+This callback function gets called by libcurl every time before a new resolve
+request is started.
+
+\fIresolver_state\fP points to a backend-specific resolver state. Currently
+only the ares resolver backend has a resolver state. It can be used to set up
+any desired option on the ares channel before it's used, for example setting up
+socket callback options.
+
+\fIreserved\fP is reserved.
+
+\fIuserdata\fP is the user pointer set with the
+\fICURLOPT_RESOLVER_START_DATA(3)\fP option.
+
+The callback must return 0 on success. Returning a non-zero value will cause
+the resolve to fail.
+.SH DEFAULT
+NULL (No callback)
+.SH PROTOCOLS
+All
+.SH EXAMPLE
+.nf
+static int resolver_start_cb(void *resolver_state, void *reserved,
+ void *userdata)
+{
+ (void)reserved;
+ printf("Received resolver_state=%p userdata=%p\\n",
+ resolver_state, userdata);
+ return 0;
+}
+
+CURL *curl = curl_easy_init();
+if(curl) {
+ curl_easy_setopt(curl, CURLOPT_RESOLVER_START_FUNCTION, resolver_start_cb);
+ curl_easy_setopt(curl, CURLOPT_RESOLVER_START_DATA, curl);
+ curl_easy_setopt(curl, CURLOPT_URL, "http://example.com");
+ curl_easy_perform(curl);
+ curl_easy_cleanup(curl);
+}
+.fi
+.SH AVAILABILITY
+Added in 7.59.0
+.SH RETURN VALUE
+Returns CURLE_OK
+.SH "SEE ALSO"
+.BR CURLOPT_RESOLVER_START_DATA "(3) "
diff --git a/docs/libcurl/opts/Makefile.inc b/docs/libcurl/opts/Makefile.inc
index 0cebc46d4..2aa1acf33 100644
--- a/docs/libcurl/opts/Makefile.inc
+++ b/docs/libcurl/opts/Makefile.inc
@@ -242,6 +242,8 @@ man_MANS = \
CURLOPT_REFERER.3 \
CURLOPT_REQUEST_TARGET.3 \
CURLOPT_RESOLVE.3 \
+ CURLOPT_RESOLVER_START_DATA.3 \
+ CURLOPT_RESOLVER_START_FUNCTION.3 \
CURLOPT_RESUME_FROM.3 \
CURLOPT_RESUME_FROM_LARGE.3 \
CURLOPT_RTSP_CLIENT_CSEQ.3 \
diff --git a/docs/libcurl/symbols-in-versions b/docs/libcurl/symbols-in-versions
index e3cb469f3..c58086fb7 100644
--- a/docs/libcurl/symbols-in-versions
+++ b/docs/libcurl/symbols-in-versions
@@ -597,6 +597,8 @@ CURLOPT_TLSAUTH_TYPE 7.21.4
CURLOPT_TLSAUTH_USERNAME 7.21.4
CURLOPT_TRANSFERTEXT 7.1.1
CURLOPT_TRANSFER_ENCODING 7.21.6
+CURLOPT_RESOLVER_START_FUNCTION 7.59.0
+CURLOPT_RESOLVER_START_DATA 7.59.0
CURLOPT_UNIX_SOCKET_PATH 7.40.0
CURLOPT_UNRESTRICTED_AUTH 7.10.4
CURLOPT_UPLOAD 7.1
diff --git a/include/curl/curl.h b/include/curl/curl.h
index 93954bca5..fa019eca9 100644
--- a/include/curl/curl.h
+++ b/include/curl/curl.h
@@ -245,7 +245,9 @@ typedef size_t (*curl_write_callback)(char *buffer,
size_t nitems,
void *outstream);
-
+/* This callback will be called when a new resolver request is made */
+typedef int (*curl_resolver_start_callback)(void *resolver_state,
+ void *reserved, void *userdata);
/* enumeration of file types */
typedef enum {
@@ -1833,6 +1835,12 @@ typedef enum {
/* Head start in milliseconds to give happy eyeballs. */
CINIT(HAPPY_EYEBALLS_TIMEOUT_MS, LONG, 271),
+ /* Function that will be called before a resolver request is made */
+ CINIT(RESOLVER_START_FUNCTION, FUNCTIONPOINT, 272),
+
+ /* User data to pass to the resolver start callback. */
+ CINIT(RESOLVER_START_DATA, OBJECTPOINT, 273),
+
CURLOPT_LASTENTRY /* the last unused */
} CURLoption;
diff --git a/include/curl/typecheck-gcc.h b/include/curl/typecheck-gcc.h
index 10c74c764..3a0f253f6 100644
--- a/include/curl/typecheck-gcc.h
+++ b/include/curl/typecheck-gcc.h
@@ -54,6 +54,9 @@ __extension__ ({ \
if(_curl_is_write_cb_option(_curl_opt)) \
if(!_curl_is_write_cb(value)) \
_curl_easy_setopt_err_write_callback(); \
+ if((_curl_opt) == CURLOPT_RESOLVER_START_FUNCTION) \
+ if(!_curl_is_resolver_start_callback(value)) \
+ _curl_easy_setopt_err_resolver_start_callback(); \
if((_curl_opt) == CURLOPT_READFUNCTION) \
if(!_curl_is_read_cb(value)) \
_curl_easy_setopt_err_read_cb(); \
@@ -170,6 +173,10 @@ _CURL_WARNING(_curl_easy_setopt_err_string,
)
_CURL_WARNING(_curl_easy_setopt_err_write_callback,
"curl_easy_setopt expects a curl_write_callback argument for this option")
+_CURL_WARNING(_curl_easy_setopt_err_resolver_start_callback,
+ "curl_easy_setopt expects a "
+ "curl_resolver_start_callback argument for this option"
+ )
_CURL_WARNING(_curl_easy_setopt_err_read_cb,
"curl_easy_setopt expects a curl_read_callback argument for this option")
_CURL_WARNING(_curl_easy_setopt_err_ioctl_cb,
@@ -354,6 +361,7 @@ _CURL_WARNING(_curl_easy_getinfo_err_curl_off_t,
(option) == CURLOPT_SSH_KEYDATA || \
(option) == CURLOPT_SSL_CTX_DATA || \
(option) == CURLOPT_WRITEDATA || \
+ (option) == CURLOPT_RESOLVER_START_DATA || \
0)
/* evaluates to true if option takes a POST data argument (void* or char*) */
@@ -504,6 +512,11 @@ _CURL_WARNING(_curl_easy_getinfo_err_curl_off_t,
(__builtin_types_compatible_p(__typeof__(func), type) || \
__builtin_types_compatible_p(__typeof__(func) *, type))
+/* evaluates to true if expr is of type curl_resolver_start_callback */
+#define _curl_is_resolver_start_callback(expr) \
+ (_curl_is_NULL(expr) || \
+ _curl_callback_compatible((expr), curl_resolver_start_callback))
+
/* evaluates to true if expr is of type curl_read_callback or "similar" */
#define _curl_is_read_cb(expr) \
(_curl_is_NULL(expr) || \
diff --git a/lib/hostip.c b/lib/hostip.c
index 895c13294..8554d39d1 100644
--- a/lib/hostip.c
+++ b/lib/hostip.c
@@ -58,6 +58,7 @@
#include "strerror.h"
#include "url.h"
#include "inet_ntop.h"
+#include "multiif.h"
#include "warnless.h"
/* The last 3 #include files should be in this order */
#include "curl_printf.h"
@@ -481,6 +482,17 @@ int Curl_resolv(struct connectdata *conn,
if(!Curl_ipvalid(conn))
return CURLRESOLV_ERROR;
+ /* notify the resolver start callback */
+ if(data->set.resolver_start) {
+ int st;
+ Curl_set_in_callback(data, true);
+ st = data->set.resolver_start(data->state.resolver, NULL,
+ data->set.resolver_start_client);
+ Curl_set_in_callback(data, false);
+ if(st)
+ return CURLRESOLV_ERROR;
+ }
+
/* If Curl_getaddrinfo() returns NULL, 'respwait' might be set to a
non-zero value indicating that we need to wait for the response to the
resolve call */
diff --git a/lib/setopt.c b/lib/setopt.c
index 8dcd10e6b..9c96eb358 100644
--- a/lib/setopt.c
+++ b/lib/setopt.c
@@ -2110,6 +2110,21 @@ CURLcode Curl_vsetopt(struct Curl_easy *data, CURLoption option,
data->set.fclosesocket = va_arg(param, curl_closesocket_callback);
break;
+ case CURLOPT_RESOLVER_START_FUNCTION:
+ /*
+ * resolver start callback function: called before a new resolver request
+ * is started
+ */
+ data->set.resolver_start = va_arg(param, curl_resolver_start_callback);
+ break;
+
+ case CURLOPT_RESOLVER_START_DATA:
+ /*
+ * resolver start callback data pointer. Might be NULL.
+ */
+ data->set.resolver_start_client = va_arg(param, void *);
+ break;
+
case CURLOPT_CLOSESOCKETDATA:
/*
* socket callback data pointer. Might be NULL.
diff --git a/lib/urldata.h b/lib/urldata.h
index 35014c232..975333867 100644
--- a/lib/urldata.h
+++ b/lib/urldata.h
@@ -1681,6 +1681,10 @@ struct UserDefined {
struct Curl_http2_dep *stream_dependents;
bool abstract_unix_socket;
+
+ curl_resolver_start_callback resolver_start; /* optional callback called
+ before resolver start */
+ void *resolver_start_client; /* pointer to pass to resolver start callback */
};
struct Names {
diff --git a/packages/OS400/curl.inc.in b/packages/OS400/curl.inc.in
index 3852dde7a..0846da1b9 100644
--- a/packages/OS400/curl.inc.in
+++ b/packages/OS400/curl.inc.in
@@ -1326,6 +1326,10 @@
d c 30270
d CURLOPT_HAPPY_EYEBALLS_TIMEOUT_MS...
d c 00271
+ d CURLOPT_RESOLVER_START_FUNCTION...
+ d c 20272
+ d CURLOPT_RESOLVER_START_DATA...
+ d c 10273
*
/if not defined(CURL_NO_OLDIES)
d CURLOPT_FILE c 10001
diff --git a/tests/data/Makefile.inc b/tests/data/Makefile.inc
index 892012988..55abec873 100644
--- a/tests/data/Makefile.inc
+++ b/tests/data/Makefile.inc
@@ -80,7 +80,7 @@ test617 test618 test619 test620 test621 test622 test623 test624 test625 \
test626 test627 test628 test629 test630 test631 test632 test633 test634 \
test635 test636 test637 test638 test639 test640 test641 test642 \
test643 test644 test645 test646 test647 test648 test649 test650 test651 \
-test652 test653 test654 \
+test652 test653 test654 test655 \
\
test700 test701 test702 test703 test704 test705 test706 test707 test708 \
test709 test710 test711 test712 test713 test714 test715 \
diff --git a/tests/data/test655 b/tests/data/test655
new file mode 100644
index 000000000..d98729c08
--- /dev/null
+++ b/tests/data/test655
@@ -0,0 +1,50 @@
+<testcase>
+<info>
+<keywords>
+HTTP
+</keywords>
+</info>
+
+#
+# Server-side
+<reply>
+<data>
+HTTP/1.1 200 OK
+Date: Thu, 09 Nov 2010 14:49:00 GMT
+Server: test-server/fake swsclose
+Connection: close
+Content-Type: text/html
+
+hello
+</data>
+<datacheck>
+hello
+</datacheck>
+</reply>
+
+# Client-side
+<client>
+<server>
+http
+</server>
+# tool is what to use instead of 'curl'
+<tool>
+lib655
+</tool>
+
+ <name>
+resolver start callback
+ </name>
+ <command>
+http://%HOSTIP:%HTTPPORT/655
+</command>
+</client>
+
+#
+# Verify data after the test has been "shot"
+<verify>
+<errorcode>
+0
+</errorcode>
+</verify>
+</testcase>
diff --git a/tests/libtest/Makefile.inc b/tests/libtest/Makefile.inc
index c47659804..e7e8c486a 100644
--- a/tests/libtest/Makefile.inc
+++ b/tests/libtest/Makefile.inc
@@ -20,7 +20,7 @@ noinst_PROGRAMS = chkhostname libauthretry libntlmconnect \
lib559 lib560 lib562 lib564 lib565 lib566 lib567 lib568 lib569 lib570 \
lib571 lib572 lib573 lib574 lib575 lib576 lib578 lib579 lib582 \
lib583 lib585 lib586 lib587 lib589 lib590 lib591 lib597 lib598 lib599 \
- lib643 lib644 lib645 lib650 lib651 lib652 lib653 lib654 \
+ lib643 lib644 lib645 lib650 lib651 lib652 lib653 lib654 lib655 \
lib1500 lib1501 lib1502 lib1503 lib1504 lib1505 lib1506 lib1507 lib1508 \
lib1509 lib1510 lib1511 lib1512 lib1513 lib1514 lib1515 lib1517 \
lib1520 lib1521 \
@@ -327,6 +327,9 @@ lib653_CPPFLAGS = $(AM_CPPFLAGS)
lib654_SOURCES = lib654.c $(SUPPORTFILES)
lib654_CPPFLAGS = $(AM_CPPFLAGS)
+lib655_SOURCES = lib655.c $(SUPPORTFILES)
+lib655_CPPFLAGS = $(AM_CPPFLAGS)
+
lib1500_SOURCES = lib1500.c $(SUPPORTFILES) $(TESTUTIL)
lib1500_LDADD = $(TESTUTIL_LIBS)
lib1500_CPPFLAGS = $(AM_CPPFLAGS)
diff --git a/tests/libtest/lib655.c b/tests/libtest/lib655.c
new file mode 100644
index 000000000..7ee12a3f7
--- /dev/null
+++ b/tests/libtest/lib655.c
@@ -0,0 +1,112 @@
+/***************************************************************************
+ * _ _ ____ _
+ * Project ___| | | | _ \| |
+ * / __| | | | |_) | |
+ * | (__| |_| | _ <| |___
+ * \___|\___/|_| \_\_____|
+ *
+ * Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel@haxx.se>, et al.
+ *
+ * This software is licensed as described in the file COPYING, which
+ * you should have received as part of this distribution. The terms
+ * are also available at https://curl.haxx.se/docs/copyright.html.
+ *
+ * You may opt to use, copy, modify, merge, publish, distribute and/or sell
+ * copies of the Software, and permit persons to whom the Software is
+ * furnished to do so, under the terms of the COPYING file.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ***************************************************************************/
+#include "test.h"
+
+#include "memdebug.h"
+
+const char TEST_DATA_STRING[] = "Test data";
+static int cb_count = 0;
+
+static int
+resolver_alloc_cb_fail(void *resolver_state, void *reserved, void *userdata)
+{
+ (void)resolver_state;
+ (void)reserved;
+
+ cb_count++;
+ if(strcmp(userdata, TEST_DATA_STRING)) {
+ fprintf(stderr, "Invalid test data received");
+ exit(1);
+ }
+
+ return 1;
+}
+
+static int
+resolver_alloc_cb_pass(void *resolver_state, void *reserved, void *userdata)
+{
+ (void)resolver_state;
+ (void)reserved;
+
+ cb_count++;
+ if(strcmp(userdata, TEST_DATA_STRING)) {
+ fprintf(stderr, "Invalid test data received");
+ exit(1);
+ }
+
+ return 0;
+}
+
+int test(char *URL)
+{
+ CURL *curl;
+ CURLcode res = CURLE_OK;
+
+ if(curl_global_init(CURL_GLOBAL_ALL) != CURLE_OK) {
+ fprintf(stderr, "curl_global_init() failed\n");
+ return TEST_ERR_MAJOR_BAD;
+ }
+ curl = curl_easy_init();
+ if(!curl) {
+ fprintf(stderr, "curl_easy_init() failed\n");
+ res = TEST_ERR_MAJOR_BAD;
+ goto test_cleanup;
+ }
+
+ /* First set the URL that is about to receive our request. */
+ test_setopt(curl, CURLOPT_URL, URL);
+
+ test_setopt(curl, CURLOPT_RESOLVER_START_DATA, TEST_DATA_STRING);
+ test_setopt(curl, CURLOPT_RESOLVER_START_FUNCTION, resolver_alloc_cb_fail);
+
+ /* this should fail */
+ res = curl_easy_perform(curl);
+ if(res != CURLE_COULDNT_RESOLVE_HOST) {
+ fprintf(stderr, "curl_easy_perform should have returned "
+ "CURLE_COULDNT_RESOLVE_HOST but instead returned error %d\n", res);
+ if(res == CURLE_OK)
+ res = TEST_ERR_FAILURE;
+ goto test_cleanup;
+ }
+
+ test_setopt(curl, CURLOPT_RESOLVER_START_FUNCTION, resolver_alloc_cb_pass);
+
+ /* this should succeed */
+ res = curl_easy_perform(curl);
+ if(res) {
+ fprintf(stderr, "curl_easy_perform failed.\n");
+ goto test_cleanup;
+ }
+
+ if(cb_count != 2) {
+ fprintf(stderr, "Unexpected number of callbacks: %d\n", cb_count);
+ res = TEST_ERR_FAILURE;
+ goto test_cleanup;
+ }
+
+test_cleanup:
+ /* always cleanup */
+ curl_easy_cleanup(curl);
+ curl_global_cleanup();
+
+ return (int)res;
+}
diff --git a/tests/libtest/mk-lib1521.pl b/tests/libtest/mk-lib1521.pl
index 6ded47220..fbb1cdee2 100755
--- a/tests/libtest/mk-lib1521.pl
+++ b/tests/libtest/mk-lib1521.pl
@@ -132,6 +132,7 @@ static curl_chunk_end_callback chunk_end_cb;
static curl_fnmatch_callback fnmatch_cb;
static curl_closesocket_callback closesocketcb;
static curl_xferinfo_callback xferinfocb;
+static curl_resolver_start_callback resolver_start_cb;
int test(char *URL)
{