diff --git a/tests/data/Makefile.am b/tests/data/Makefile.am
index 5ae85c4d1..8e5f91085 100644
--- a/tests/data/Makefile.am
+++ b/tests/data/Makefile.am
@@ -123,7 +123,7 @@ test1408 test1409 test1410 test1412 test1413 test1414 test1415 \
test1416 test1417 \
\
test1500 test1501 test1502 test1503 test1504 test1505 test1506 test1507 \
-test1508 test1509 test1510 test1511 test1512 test1513 \
+test1508 test1509 test1510 test1511 test1512 test1513 test1514 \
\
test1900 test1901 test1902 test1903 \
\
diff --git a/tests/data/test1514 b/tests/data/test1514
new file mode 100644
index 000000000..eb5456011
--- /dev/null
+++ b/tests/data/test1514
@@ -0,0 +1,48 @@
+
+
+
+HTTP
+HTTP POST
+Content-Length
+
+
+
+# Server-side
+
+
+HTTP/1.1 411 Length Required
+Date: Sun, 19 Jan 2014 18:50:58 GMT
+Server: test-server/fake swsclose
+Connection: close
+
+
+
+# Client-side
+
+
+http
+
+
+lib1514
+
+
+HTTP POST with read callback and unknown data size
+
+
+http://%HOSTIP:%HTTPPORT/1514
+
+
+
+# Verify data after the test has been "shot"
+
+# Content-Length header is not present
+
+POST /1514 HTTP/1.1
+Host: 127.0.0.1:8990
+Accept: */*
+Content-Type: application/x-www-form-urlencoded
+Expect: 100-continue
+
+
+
+
diff --git a/tests/libtest/Makefile.inc b/tests/libtest/Makefile.inc
index c74be98be..b4c8907b7 100644
--- a/tests/libtest/Makefile.inc
+++ b/tests/libtest/Makefile.inc
@@ -21,7 +21,7 @@ noinst_PROGRAMS = chkhostname libauthretry libntlmconnect \
lib571 lib572 lib573 lib574 lib575 lib576 lib578 lib579 lib582 \
lib583 lib585 lib586 lib587 lib590 lib591 lib597 lib598 lib599 \
lib1500 lib1501 lib1502 lib1503 lib1504 lib1505 lib1506 lib1507 lib1508 \
- lib1509 lib1510 lib1511 lib1512 lib1513 \
+ lib1509 lib1510 lib1511 lib1512 lib1513 lib1514 \
lib1900 \
lib2033
@@ -347,6 +347,10 @@ lib1513_SOURCES = lib1513.c $(SUPPORTFILES) $(TESTUTIL) $(WARNLESS)
lib1513_LDADD = $(TESTUTIL_LIBS)
lib1513_CPPFLAGS = $(AM_CPPFLAGS) -DLIB1513
+lib1514_SOURCES = lib1514.c $(SUPPORTFILES) $(TESTUTIL) $(WARNLESS)
+lib1514_LDADD = $(TESTUTIL_LIBS)
+lib1514_CPPFLAGS = $(AM_CPPFLAGS) -DLIB1514
+
lib1900_SOURCES = lib1900.c $(SUPPORTFILES) $(TESTUTIL) $(WARNLESS)
lib1900_LDADD = $(TESTUTIL_LIBS)
lib1900_CPPFLAGS = $(AM_CPPFLAGS)
diff --git a/tests/libtest/lib1514.c b/tests/libtest/lib1514.c
new file mode 100644
index 000000000..b6136efe0
--- /dev/null
+++ b/tests/libtest/lib1514.c
@@ -0,0 +1,80 @@
+/***************************************************************************
+ * _ _ ____ _
+ * Project ___| | | | _ \| |
+ * / __| | | | |_) | |
+ * | (__| |_| | _ <| |___
+ * \___|\___/|_| \_\_____|
+ *
+ * Copyright (C) 1998 - 2014, 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 http://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.
+ *
+ ***************************************************************************/
+/*
+ * Make sure libcurl does not send a `Content-Length: -1` header when HTTP POST
+ * size is unknown.
+ */
+
+#include "test.h"
+
+#include "memdebug.h"
+
+static char data[]="dummy";
+
+struct WriteThis {
+ char *readptr;
+ size_t sizeleft;
+};
+
+static size_t read_callback(void *ptr, size_t size, size_t nmemb, void *userp)
+{
+ struct WriteThis *pooh = (struct WriteThis *)userp;
+
+ if(size*nmemb < 1)
+ return 0;
+
+ if(pooh->sizeleft) {
+ *(char *)ptr = pooh->readptr[0]; /* copy one single byte */
+ pooh->readptr++; /* advance pointer */
+ pooh->sizeleft--; /* less data left */
+ return 1; /* we return 1 byte at a time! */
+ }
+
+ return 0; /* no more data left to deliver */
+}
+
+int test(char *URL)
+{
+ CURL *curl;
+ CURLcode result = CURLE_OK;
+ int res = 0;
+ struct WriteThis pooh = { data, strlen(data) };
+
+ global_init(CURL_GLOBAL_ALL);
+
+ easy_init(curl);
+
+ easy_setopt(curl, CURLOPT_URL, URL);
+ easy_setopt(curl, CURLOPT_POST, 1L);
+ /* Purposely omit to set CURLOPT_POSTFIELDSIZE */
+ easy_setopt(curl, CURLOPT_READFUNCTION, read_callback);
+ easy_setopt(curl, CURLOPT_READDATA, &pooh);
+
+ result = curl_easy_perform(curl);
+
+test_cleanup:
+
+ curl_easy_cleanup(curl);
+ curl_global_cleanup();
+
+ return (int)result;
+}