[Bug swing/39553] New: gcj compile error (IllegalArgumentException) when using the add() method of GCJ container class for a JScrollPanel (Swing)

[dmichel76 at gmail dot com]

gcj version: gcj (GCC) 4.2.4 (Ubuntu 4.2.4-1ubuntu3)
JRE: java-1.5.0-gcj-4.2-1.5.0.0 with Eclipse


private JScrollPane screenPane;
private Jpanel screen;
.
.
.
screenPane.add(screen);

causes a IllegalArgumentException...

The reason is as follows:

GCJ Container class on line 276 contains code for the above call:
        add(Component comp)
        {
                addImpl(comp, null, -1)
        }

The addImpl function calls, near the end (line 390):
        layoutMgr.addLayoutComponent("", comp);
because it was passed null constraints.

The ScrollPaneLayout class implements the addLayoutComp (line 125):
        addLayoutComponent(String key, Component component)
but notice that the 'key' variable has been passed an empty String; this
function now throws an IllegalArgumentException.

Changing the initial call tp
        screenPane.add(screen, "UPPER_LEFT_CORNER");
seems to fix this issue but the behaviour is wrong and no components is
displayed on the resulting gui !


-- 
           Summary: gcj compile error (IllegalArgumentException) when using
                    the add() method of GCJ container class for a
                    JScrollPanel (Swing)
           Product: classpath
           Version: unspecified
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: swing
        AssignedTo: roman at kennke dot org
        ReportedBy: dmichel76 at gmail dot com


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39553