Hello!
Looking to imageIO.java (if this is bad thread, please redirect me!) when
reading images
http://hg.openjdk.java.net/jdk8/jdk8/jdk/file/687fd7c7986d/src/share/classes/javax/imageio/ImageIO.java#l543
and ending at:
// Perform mark/reset as a defensive measure
// even though plug-ins are supposed to take
// care of it.
boolean canDecode = false;
if (stream != null) {
stream.mark();
}
canDecode = spi.canDecodeInput(input);
if (stream != null) {
stream.reset();
}
return canDecode;
I'm wondering, why stream.reset(); is not in finaly block:
// Perform mark/reset as a defensive measure
// even though plug-ins are supposed to take
// care of it.
boolean canDecode = false;
if (stream != null) {
stream.mark();
}
try{
canDecode = spi.canDecodeInput(input);
} finally {
if (stream != null) {
stream.reset();
}
}
return canDecode;
Eg png and bmp decoders can are throwing IIOException when header is corrutped.
That pretty definitely sure killer of stream mark stacks.
You yourselves write : //Perform mark/reset as a defensive measure even though
plug-ins are supposed to take care of it.
So if densive, then try/finaly please.
I did not check if this changed in 9 but if not....Please. This is makig work
on custom image plugins, for image formats which just wraps another bmp/png and
are expecting corrupted headers preatty hards.
J.
