diff --git a/tests/data/Makefile.am b/tests/data/Makefile.am
index a0a7879660..4fda5f8178 100644
--- a/tests/data/Makefile.am
+++ b/tests/data/Makefile.am
@@ -108,7 +108,7 @@ test718 test719 test720 test721 test722 test723 test724 test725 test726 \
test727 test728 test729 test730 test731 test732 test733 test734 test735 \
test736 test737 test738 test739 test740 test741 test742 test743 test744 \
test745 test746 test747 test748 test749 test750 test751 test752 test753 \
-test754 test755 test756 \
+test754 test755 test756 test757 \
test780 test781 test782 test783 test784 test785 test786 test787 test788 \
test789 test790 test791 test792 test793 \
\
diff --git a/tests/data/test757 b/tests/data/test757
new file mode 100644
index 0000000000..9cf9b2c3b1
--- /dev/null
+++ b/tests/data/test757
@@ -0,0 +1,78 @@
+
+
+
+MIME
+
+
+# Server-side
+
+
+HTTP/1.0 200 OK swsclose
+Date: Tue, 09 Nov 2010 14:49:00 GMT
+Server: test-server/fake
+
+blablabla
+
+
+
+
+# Client-side
+
+
+Mime
+
+
+http
+
+
+lib%TESTNUMBER
+
+
+
+MIME parts reused as a child part, using data_cb
+
+
+http://%HOSTIP:%HTTPPORT/we/want/%TESTNUMBER
+
+
+
+# Verify data after the test has been "shot"
+
+
+s/^--------------------------[A-Za-z0-9]*/------------------------------/
+s/boundary=------------------------[A-Za-z0-9]*/boundary=----------------------------/
+
+
+POST /we/want/%TESTNUMBER HTTP/1.1
+Host: %HOSTIP:%HTTPPORT
+Accept: */*
+Content-Length: 200
+Content-Type: multipart/form-data; boundary=----------------------------
+
+------------------------------
+Content-Disposition: form-data; name="data"
+Content-Type: text/html
+
+fun-times
+--------------------------------
+POST /we/want/%TESTNUMBER HTTP/1.1
+Host: %HOSTIP:%HTTPPORT
+Accept: */*
+Content-Length: 427
+Content-Type: multipart/form-data; boundary=----------------------------
+
+------------------------------
+Content-Disposition: form-data
+Content-Type: multipart/mixed; boundary=----------------------------
+
+------------------------------
+Content-Disposition: attachment; name="data"
+Content-Type: text/html
+
+fun-times
+--------------------------------
+
+--------------------------------
+
+
+
diff --git a/tests/libtest/Makefile.inc b/tests/libtest/Makefile.inc
index f30010bd86..770184f713 100644
--- a/tests/libtest/Makefile.inc
+++ b/tests/libtest/Makefile.inc
@@ -72,6 +72,7 @@ TESTS_C = \
lib670.c lib674.c lib676.c lib677.c lib678.c \
lib694.c lib695.c \
lib751.c lib753.c \
+ lib757.c \
lib1156.c \
lib1301.c lib1308.c \
lib1485.c \
diff --git a/tests/libtest/lib757.c b/tests/libtest/lib757.c
new file mode 100644
index 0000000000..632818f946
--- /dev/null
+++ b/tests/libtest/lib757.c
@@ -0,0 +1,135 @@
+/***************************************************************************
+ * _ _ ____ _
+ * Project ___| | | | _ \| |
+ * / __| | | | |_) | |
+ * | (__| |_| | _ <| |___
+ * \___|\___/|_| \_\_____|
+ *
+ * Copyright (C) Daniel Stenberg, , 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.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.
+ *
+ * SPDX-License-Identifier: curl
+ *
+ ***************************************************************************/
+#include "first.h"
+
+#include "memdebug.h"
+
+/* write callback that does nothing */
+static size_t write_757(char *ptr, size_t size, size_t nmemb, void *userdata)
+{
+ (void)ptr;
+ (void)userdata;
+ return size * nmemb;
+}
+
+#define DATA757 "fun-times"
+#define DATALEN (sizeof(DATA757) - 1)
+
+static size_t read_757(char *buffer, size_t size, size_t nitems, void *arg)
+{
+ (void)arg;
+ if((size * nitems) >= DATALEN) {
+ memcpy(buffer, DATA757, DATALEN);
+ return DATALEN;
+ }
+ return 0;
+}
+
+static int seek_757(void *arg, curl_off_t offset, int origin)
+{
+ (void)arg;
+ (void)offset;
+ (void)origin;
+ return CURL_SEEKFUNC_OK;
+}
+
+static CURLcode test_lib757(const char *URL)
+{
+ CURL *curl = NULL;
+ curl_mime *mime1 = NULL;
+ curl_mime *mime2 = NULL;
+ curl_mimepart *part;
+ CURLcode res = TEST_ERR_FAILURE;
+
+ /*
+ * Check proper rewind when reusing a mime structure.
+ */
+
+ if(curl_global_init(CURL_GLOBAL_ALL) != CURLE_OK) {
+ curl_mfprintf(stderr, "curl_global_init() failed\n");
+ return TEST_ERR_MAJOR_BAD;
+ }
+
+ curl = curl_easy_init();
+
+ /* First set the URL that is about to receive our POST. */
+ test_setopt(curl, CURLOPT_URL, URL);
+
+ /* get verbose debug output please */
+ test_setopt(curl, CURLOPT_VERBOSE, 1L);
+
+ /* Do not write anything. */
+ curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, write_757);
+
+ /* Build the first mime structure. */
+ mime1 = curl_mime_init(curl);
+ part = curl_mime_addpart(mime1);
+ curl_mime_data_cb(part, DATALEN, read_757, seek_757, NULL, NULL);
+ curl_mime_type(part, "text/html");
+ curl_mime_name(part, "data");
+
+ /* Use first mime structure as top level MIME POST. */
+ curl_easy_setopt(curl, CURLOPT_MIMEPOST, mime1);
+
+ /* Perform the request, res gets the return code */
+ res = curl_easy_perform(curl);
+
+ /* Check for errors */
+ if(res != CURLE_OK)
+ curl_mfprintf(stderr, "curl_easy_perform() 1 failed: %s\n",
+ curl_easy_strerror(res));
+ else {
+ /* phase two, create a mime struct using the mime1 handle */
+ mime2 = curl_mime_init(curl);
+ part = curl_mime_addpart(mime2);
+
+ /* use the new mime setup */
+ curl_easy_setopt(curl, CURLOPT_MIMEPOST, mime2);
+
+ /* Reuse previous mime structure as a child. */
+ res = curl_mime_subparts(part, mime1);
+
+ if(res != CURLE_OK)
+ curl_mfprintf(stderr, "curl_mime_subparts() failed: %sn",
+ curl_easy_strerror(res));
+ else {
+ mime1 = NULL;
+
+ /* Perform the request, res gets the return code */
+ res = curl_easy_perform(curl);
+
+ /* Check for errors */
+ if(res != CURLE_OK)
+ curl_mfprintf(stderr, "curl_easy_perform() 2 failed: %s\n",
+ curl_easy_strerror(res));
+ }
+ }
+
+test_cleanup:
+ curl_easy_cleanup(curl);
+ curl_mime_free(mime1);
+ curl_mime_free(mime2);
+ curl_global_cleanup();
+ return res;
+}