fix a crash on solaris when a printf %s with a NULL argument occurs,

* xmlschemas.c: fix a crash on solaris when a printf %s with a NULL
  argument occurs, should fix #450936
Daniel

svn path=/trunk/; revision=3641

ChangeLog

+Tue Jun 26 13:30:50 CEST 2007 Daniel Veillard <daniel@veillard.com>
+
+	* xmlschemas.c: fix a crash on solaris when a printf %s with a NULL
+	  argument occurs, should fix #450936
+
 Wed Jun 13 13:33:38 PDT 2007 William Brack <wbrack@mmm.com.hk>
 	* xpath.c: fixed problem in previous fix to xmlXPathNodeSetSort

NEWS

@@ -36,7 +36,7 @@
       workaround wrong file: URIs, htmlNodeDumpFormatOutput on attributes,
       invalid character in attribute detection bug, big comments before 
       internal subset streaming bug, HTML parsing of attributes with : in
-      the name 
+      the name, IDness of name in HTML (Dagfinn I. Mannsker) 
    - Improvement: keep URI query parts in raw form (Richard Jones),
       embed tag support in HTML (Michael Day) 
 

doc/news.html

@@ -32,7 +32,7 @@
       workaround wrong file: URIs, htmlNodeDumpFormatOutput on attributes,
       invalid character in attribute detection bug, big comments before 
       internal subset streaming bug, HTML parsing of attributes with : in
-      the name </li>
+      the name, IDness of name in HTML (Dagfinn I. Mannsker) </li>
   <li>Improvement: keep URI query parts in raw form (Richard Jones),
       embed tag support in HTML (Michael Day) </li>
 </ul><h3>2.6.28: Apr 17 2007</h3><ul><li>Documentation: comment fixes (Markus Keim), xpath comments fixes too

xmlschemas.c

@@ -10346,6 +10346,8 @@
 	/* TODO: The following nasty cases will produce an error. */
 	if ((WXS_IS_BUCKET_IMPMAIN(type)) && (! bkt->imported)) {
 	    /* We included/redefined and then try to import a schema. */
+	    if (schemaLocation == NULL)
+		schemaLocation = BAD_CAST "in_memory_buffer";
 	    xmlSchemaCustomErr(ACTXT_CAST pctxt, err,
 		invokingNode, NULL,
 		"The schema document '%s' cannot be imported, since "
@@ -10354,6 +10356,8 @@
 	    goto exit;
 	} else if ((! WXS_IS_BUCKET_IMPMAIN(type)) && (bkt->imported)) {
 	    /* We imported and then try to include/redefine a schema. */
+	    if (schemaLocation == NULL)
+		schemaLocation = BAD_CAST "in_memory_buffer";
 	    xmlSchemaCustomErr(ACTXT_CAST pctxt, err,
 		invokingNode, NULL,
 		"The schema document '%s' cannot be included or "
@@ -10404,6 +10408,9 @@
 		    * URGENT TODO: We should report a warning here.
 		    * res = XML_SCHEMAP_SRC_IMPORT;
 		    */
+		    if (schemaLocation == NULL)
+			schemaLocation = BAD_CAST "in_memory_buffer";
+
 		    xmlSchemaCustomWarning(ACTXT_CAST pctxt,
 			XML_SCHEMAP_WARN_SKIP_SCHEMA,
 			invokingNode, NULL,
@@ -10484,7 +10491,8 @@
 	if (schemaDoc->URL != NULL)
 	    schemaLocation = xmlDictLookup(pctxt->dict,
 		schemaDoc->URL, -1);
-
+        else
+	    schemaLocation = BAD_CAST "in_memory_buffer";
     } else if ((schemaLocation != NULL) || (schemaBuffer != NULL)) {
 	xmlParserCtxtPtr parserCtxt;