We just upgraded a server from RHEL v7.3
to v7.4
.
This simple program works in RHEL v7.3 and fails in v7.4
public class TestJava {
public static void main(String[] args) {
Font font = new Font("SansSerif", Font.PLAIN, 12);
FontRenderContext frc = new FontRenderContext(null, false, false);
TextLayout layout = new TextLayout("\ude00", font, frc);
layout.getCaretShapes(0);
System.out.println(layout);
}
}
The exception in RHEL 7.4 is :
Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: 0
at sun.font.CompositeStrike.getStrikeForSlot(CompositeStrike.java:75)
at sun.font.CompositeStrike.getFontMetrics(CompositeStrike.java:93)
at sun.font.Font2D.getFontMetrics(Font2D.java:415)
at java.awt.Font.defaultLineMetrics(Font.java:2176)
at java.awt.Font.getLineMetrics(Font.java:2283)
at java.awt.font.TextLayout.fastInit(TextLayout.java:598)
at java.awt.font.TextLayout.<init>(TextLayout.java:393)
Te result on RHEL v7.3 is:
sun.font.StandardTextSource@7ba4f24f[start:0, len:1, cstart:0, clen:1, chars:"de00", level:0, flags:0, font:java.awt.Font[family=SansSerif,name=SansSerif,style=plain,size=12], frc:java.awt.font.FontRenderContext@c14b833b, cm:sun.font.CoreMetrics@412ae196]
The update of RHEL v7.4
includes an update of openjdk
from 1.8.0.131
to 1.8.0.141
but this does not seems to be related to the version of openjdk
, as the problem is the same with the IBM JDK
coming with WebSphere v9.0
(v1.8.0 SR4 FP6
). With the same version of the IBM JDK
on a RHEL v7.3
and RHEL v7.4
server, the program works in RH 7.3 and fails in RH 7.4 the same way as with openjdk
Any idea what's going on?