src/java.desktop/share/classes/sun/font/SunFontManager.java

rev 59961 : 8248468: java/awt/font/DefaultFontTest/DefaultFontTest.java fails in SunFontManager.findFont2D

@@ -351,10 +351,13 @@
                  */
                 fontConfig = createFontConfiguration();
 
                 String[] fontInfo = getDefaultPlatformFont();
                 defaultFontName = fontInfo[0];
+                if (defaultFontName == null && FontUtilities.debugFonts()) {
+                    FontUtilities.getLogger().warning("defaultFontName is null");
+                }
                 defaultFontFileName = fontInfo[1];
 
                 String extraFontPath = fontConfig.getExtraFontPath();
 
                 /* In prior releases the debugging font path replaced

@@ -1886,10 +1889,11 @@
      * A font may exist with the specified style, or it may
      * exist only in some other style. For non-native fonts the scaler
      * may be able to emulate the required style.
      */
     public Font2D findFont2D(String name, int style, int fallback) {
+        if (name == null) return null;
         String lowerCaseName = name.toLowerCase(Locale.ENGLISH);
         String mapName = lowerCaseName + dotStyleStr(style);
 
         /* If preferLocaleFonts() or preferProportionalFonts() has been
          * called we may be using an alternate set of composite fonts in this