Fixed a bug in parse_xml(). It failed to check if the given input stream was

valid before trying to parse it.

dlib/xml_parser/xml_parser_kernel_1.h

@@ -1412,6 +1412,8 @@ namespace dlib
         error_handler& eh
     )
     {
+        if (!in)
+            throw xml_parse_error("Unexpected end of file during xml parsing.");
         xml_parser parser;
         parser.add_document_handler(dh);
         parser.add_error_handler(eh);
@@ -1424,6 +1426,8 @@ namespace dlib
         document_handler& dh
     )
     {
+        if (!in)
+            throw xml_parse_error("Unexpected end of file during xml parsing.");
         xml_parser parser;
         parser.add_document_handler(dh);
         parser.add_error_handler(eh);
@@ -1435,6 +1439,8 @@ namespace dlib
         error_handler& eh
     )
     {
+        if (!in)
+            throw xml_parse_error("Unexpected end of file during xml parsing.");
         xml_parser parser;
         parser.add_error_handler(eh);
         parser.parse(in);
@@ -1445,6 +1451,8 @@ namespace dlib
         document_handler& dh
     )
     {
+        if (!in)
+            throw xml_parse_error("Unexpected end of file during xml parsing.");
         xml_parser parser;
         parser.add_document_handler(dh);
         impl::default_xml_error_handler eh;

dlib/xml_parser/xml_parser_kernel_abstract.h

@@ -223,7 +223,7 @@ namespace dlib
               supplied error_handler and document_handler.
         throws
             - xml_parse_error
-                Thrown if there is a problem opening the input file.
+                Thrown if there is a problem parsing the input file.
     !*/
 
     void parse_xml (
@@ -237,7 +237,7 @@ namespace dlib
               supplied error_handler and document_handler.
         throws
             - xml_parse_error
-                Thrown if there is a problem opening the input file.
+                Thrown if there is a problem parsing the input file.
     !*/
 
     void parse_xml (
@@ -250,7 +250,7 @@ namespace dlib
               supplied error_handler.
         throws
             - xml_parse_error
-                Thrown if there is a problem opening the input file.
+                Thrown if there is a problem parsing the input file.
     !*/
 
     void parse_xml (
@@ -265,8 +265,7 @@ namespace dlib
               if a fatal parsing error is encountered.
         throws
             - xml_parse_error
-                Thrown if a fatal parsing error is encountered or if there is a problem
-                opening the input file.
+                Thrown if there is a problem parsing the input file.
     !*/
 
 // ----------------------------------------------------------------------------------------