re PR preprocessor/69650 (ICE in linemap_line_start, at libcpp/line-map.c:803)

	Patch from Roger Orr <rogero@howzatt.demon.co.uk>
	PR preprocessor/69650
	* directives.c (do_linemarker): Reread map after calling
	cpp_get_token.

From-SVN: r234932

libcpp/ChangeLog

+2016-04-13  Bernd Schmidt  <bschmidt@redhat.com>
+
+	Patch from Roger Orr <rogero@howzatt.demon.co.uk>
+	PR preprocessor/69650
+	* directives.c (do_linemarker): Reread map after calling
+	cpp_get_token.
+
 2016-04-06  Richard Henderson  <rth@redhat.com>
 
 	PR preprocessor/61817

libcpp/directives.c

@@ -1048,6 +1048,9 @@ do_linemarker (cpp_reader *pfile)
 
   if (reason == LC_LEAVE)
     {
+      /* Reread map since cpp_get_token can invalidate it with a
+	 reallocation.  */
+      map = LINEMAPS_LAST_ORDINARY_MAP (line_table);
       const line_map_ordinary *from;      
       if (MAIN_FILE_P (map)
 	  || (new_file
@@ -1055,7 +1058,8 @@ do_linemarker (cpp_reader *pfile)
 	      && filename_cmp (ORDINARY_MAP_FILE_NAME (from), new_file) != 0))
 	{
 	  cpp_warning (pfile, CPP_W_NONE,
-		     "file \"%s\" linemarker ignored due to incorrect nesting", new_file);
+		       "file \"%s\" linemarker ignored due to "
+		       "incorrect nesting", new_file);
 	  return;
 	}
     }