CURLU: fix NULL dereference when used over proxy

Test 659 verifies

Also fixed the test 658 name

Closes #3641

2 files changed, 80 insertions, 0 deletions

diff --git a/tests/libtest/Makefile.inc b/tests/libtest/Makefile.inc
index 91fd85a87..1817dc348 100644
--- a/tests/libtest/Makefile.inc
+++ b/tests/libtest/Makefile.inc
@@ -22,6 +22,7 @@ noinst_PROGRAMS = chkhostname libauthretry libntlmconnect                \
  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 lib655 lib658   \
+ lib659 \
  lib1156 \
  lib1500 lib1501 lib1502 lib1503 lib1504 lib1505 lib1506 lib1507 lib1508 \
  lib1509 lib1510 lib1511 lib1512 lib1513 lib1514 lib1515         lib1517 \
@@ -345,6 +346,10 @@ lib658_SOURCES = lib658.c $(SUPPORTFILES) $(TESTUTIL) $(WARNLESS)
 lib658_LDADD = $(TESTUTIL_LIBS)
 lib658_CPPFLAGS = $(AM_CPPFLAGS)
 
+lib659_SOURCES = lib659.c $(SUPPORTFILES) $(TESTUTIL) $(WARNLESS)
+lib659_LDADD = $(TESTUTIL_LIBS)
+lib659_CPPFLAGS = $(AM_CPPFLAGS)
+
 lib1500_SOURCES = lib1500.c $(SUPPORTFILES) $(TESTUTIL)
 lib1500_LDADD = $(TESTUTIL_LIBS)
 lib1500_CPPFLAGS = $(AM_CPPFLAGS)
diff --git a/tests/libtest/lib659.c b/tests/libtest/lib659.c
new file mode 100644
index 000000000..b37e8e940
--- /dev/null
+++ b/tests/libtest/lib659.c
@@ -0,0 +1,75 @@
+/***************************************************************************
+ *                                  _   _ ____  _
+ *  Project                     ___| | | |  _ \| |
+ *                             / __| | | | |_) | |
+ *                            | (__| |_| |  _ <| |___
+ *                             \___|\___/|_| \_\_____|
+ *
+ * Copyright (C) 1998 - 2019, 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 "testutil.h"
+#include "warnless.h"
+#include "memdebug.h"
+
+/*
+ * Get a single URL without select().
+ */
+
+int test(char *URL)
+{
+  CURL *handle = NULL;
+  CURLcode res = 0;
+  CURLU *urlp = NULL;
+
+  global_init(CURL_GLOBAL_ALL);
+  easy_init(handle);
+
+  urlp = curl_url();
+
+  if(!urlp) {
+    fprintf(stderr, "problem init URL api.");
+    goto test_cleanup;
+  }
+
+  /* this doesn't set the PATH part */
+  if(curl_url_set(urlp, CURLUPART_HOST, "www.example.com", 0) ||
+     curl_url_set(urlp, CURLUPART_SCHEME, "http", 0) ||
+     curl_url_set(urlp, CURLUPART_PORT, "80", 0)) {
+    fprintf(stderr, "problem setting CURLUPART");
+    goto test_cleanup;
+  }
+
+  easy_setopt(handle, CURLOPT_CURLU, urlp);
+  easy_setopt(handle, CURLOPT_VERBOSE, 1L);
+  easy_setopt(handle, CURLOPT_PROXY, URL);
+
+  res = curl_easy_perform(handle);
+
+  if(res) {
+    fprintf(stderr, "%s:%d curl_easy_perform() failed with code %d (%s)\n",
+            __FILE__, __LINE__, res, curl_easy_strerror(res));
+    goto test_cleanup;
+  }
+
+test_cleanup:
+
+  curl_url_cleanup(urlp);
+  curl_easy_cleanup(handle);
+  curl_global_cleanup();
+
+  return res;
+}