On 18/07/11 23:14, Phil Race wrote:
Ah you said it was AIX, not Linux. Still, it should have that library
installed
even if the de-ref is fixed.
Not on AIX - its completely optional - and as far we can tell (other
than this particular problem) nothing else bad happens. Having said
that I would expect customers to install the package - this fix is
simply a belt and braces change.
I don't know why the attachment is missing - here it is inline:
---
diff --git a/src/solaris/classes/sun/font/FontConfigManager.java
b/src/solaris/classes/sun/font/FontConfigManager.java
--- a/src/solaris/classes/sun/font/FontConfigManager.java
+++ b/src/solaris/classes/sun/font/FontConfigManager.java
@@ -348,6 +348,8 @@
initFontConfigFonts(false);
+ if(fontConfigFonts==null) return null; // init failed
+
FcCompFont fcInfo = null;
for (int i=0; i<fontConfigFonts.length; i++) {
if (name.equals(fontConfigFonts[i].fcFamily) &&
---
By the way - why is this 2d? because it's font? Anyway I've cc'd
2d-dev as you suggest. Thanks for the quick response.
-phil.
On 7/18/2011 3:12 PM, Phil Race wrote:
Steve,
There's no attachment .. and this should be discussed on 2d-dev, not
core-libs.
I do see in the code where the null de-ref can happen. This is some
new JDK 7 code.
Although a system where the library is missing is basically DOA for
client use.
I'd suspect you are running 32 bit JDK on a 64 bit Linux which hasn't
had
the 32 bit libs installed. If so, likely you'll run into other
problems too.
-phil.
On 7/18/2011 2:37 PM, Steve Poole wrote:
Hi all, a problem was discovered on JDK7 when using the Nimbus L&F
on a system where libfontconfig.so was not installed (On AIX
actually but in theory on any unix system)
Under the covers Nimbus uses the sun.font.FontConfigManager to
retrieve fonts. sun.font.FontConfigManager in turn is intended to
use (for a unix system) the libfontconfig.so system library if present.
The code is intended to cope with the library being missing but it
unfortunately doesn't. A array is referenced without checking if it
is null. On systems where the system library is present this array
is never null but in this specific case the array is null and the
reference fails as follows.
—
Exception in thread "main" java.lang.NullPointerException
at
sun.font.FontConfigManager.getFontConfigFont(FontConfigManager.java:352)
at sun.awt.X11FontManager.getFontConfigFUIR(X11FontManager.java:817)
at sun.font.FontUtilities.getFontConfigFUIR(FontUtilities.java:472)
at
javax.swing.plaf.nimbus.NimbusDefaults.<init>(NimbusDefaults.java:138)
at
javax.swing.plaf.nimbus.NimbusLookAndFeel.<init>(NimbusLookAndFeel.java:100)
at Nimbus.main(Nimbus.java:6)
–
The fix is trivial (see attached) and probably just tactical.
Cheers,
Steve
