RE: [Ikvm-developers] [Using SWT3.1M1] broken :(

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Hi,

A long shot, but it might be related to a garbage collection problem
(where Mono somehow prematurely collects an object). Could you try the
following IKVM.Runtime version:=20
http://www.frijters.net/test-20040910.zip

Thanks.

Regards,
Jeroen

> -----Original Message-----
> From: ikv...@li...=20
> [mailto:ikv...@li...] On=20
> Behalf Of David Jung
> Sent: Friday, September 10, 2004 16:53
> To: ikv...@li...
> Subject: [Ikvm-developers] [Using SWT3.1M1] broken :(
>=20
> Looks like something in that last snapshot broke something on=20
> mono/linux.
> I cannot run even my HelloWorldSWT program anymore.  It just
> bombs with a NullPointer exception.  Here is a stack trace=20
> with --trace=3Dall
> in use [at end], but note that it isn't consistient (doesn't always=20
> happen at the same point
> each time it is run).
>=20
> A very similar simple SWT program actually causes a seg=20
> fault.  The only
> thing I could get out of the debugger from this was:
> #0  0x005d3402 in ?? ()
> #1  0x005bd950 in pthread_cond_timedwait@@GLIBC_2.3.2 () from=20
> /lib/tls/libpthread.so.0
> #2  0x0074b68c in mono_method_full_name () from /usr/lib/libmono.so.0
> #3  0x007593f8 in mono_once () from /usr/lib/libmono.so.0
> #4  0x006fdb9a in mono_gchandle_free () from /usr/lib/libmono.so.0
> #5  0x0070ce25 in mono_monitor_exit () from /usr/lib/libmono.so.0
> #6  0x0075897d in mono_once () from /usr/lib/libmono.so.0
> #7  0x00776442 in GC_end_blocking () from /usr/lib/libmono.so.0
> #8  0x005ba98c in start_thread () from /lib/tls/libpthread.so.0
> #9  0x0031716a in clone () from /lib/tls/libc.so.6
>=20
> --trace=3Dall & stack trace (HelloWorldSWT program):
>=20
> . . . . . ENTER: Frame:Leave ()(value:0xf5bba7fc, )
> . . . . . . ENTER: IKVM.Runtime.JNIEnv:UnwrapRef=20
> (intptr)(value:0x9c13008, 0x2c72, )
> . . . . . . . ENTER: System.IntPtr:ToInt32 ()(value:0xf5bba784, )
> . . . . . . . LEAVE: System.IntPtr:ToInt32 ()result=3D11378
> . . . . . . . ENTER: IKVM.Runtime.JNIEnv:GetLocalRefs=20
> ()(value:0x9c13008, )
> . . . . . . . . ENTER:=20
> System.Runtime.InteropServices.GCHandle:get_Target=20
> ()(value:0x9c1300c, )
> . . . . . . . . . ENTER: (wrapper managed-to-native)=20
> System.Runtime.InteropServices.GCHandle:GetTarget (int)(162442008, )
> . . . . . . . . . . ENTER: (wrapper runtime-invoke)=20
> System.Object:runtime_invoke_void=20
> (object,intptr,intptr,intptr)([System.NullReferenceException:0
> x947a2a0],=20
> (nil), (nil), 0x800c50, )
> . . . . . . . . . . . ENTER: System.NullReferenceException:.ctor=20
> ()(this:0x947a2a0[System.NullReferenceException HelloWorldSWT.exe], )
> . . . . . . . . . . . . ENTER: Locale:GetText=20
> (string)([STRING:0x97425f0:A null value was found where an object=20
> instance was required.], )
> . . . . . . . . . . . . LEAVE: Locale:GetText=20
> (string)[STRING:0x97425f0:A null value was found where an object=20
> instance was required.]
> . . . . . . . . . . . LEAVE: System.NullReferenceException:.ctor ()
> . . . . . . . . . . LEAVE: (wrapper runtime-invoke)=20
> System.Object:runtime_invoke_void=20
> (object,intptr,intptr,intptr)[OBJECT:(nil)]
> EXCEPTION handling: NullReferenceException
> . . . . . . . . . . ENTER: (wrapper runtime-invoke)=20
> System.Object:runtime_invoke_string=20
> (object,intptr,intptr,intptr)([System.NullReferenceException:0
> x947a2a0],=20
> (nil), (nil), 0x800d70, )
> . . . . . . . . . . . ENTER: System.Exception:ToString=20
> ()(this:0x947a2a0[System.NullReferenceException HelloWorldSWT.exe], )
> . . . . . . . . . . . . ENTER: System.Text.StringBuilder:.ctor=20
> (string)(this:0x9489810[System.Text.StringBuilder HelloWorldSWT.exe],=20
> [STRING:0x9b48f50:System.NullReferenceException], )
> . . . . . . . . . . . . . ENTER: System.Text.StringBuilder:.ctor=20
> (string,int,int,int)(this:0x9489810[System.Text.StringBuilder=20
> HelloWorldSWT.exe],=20
> [STRING:0x9b48f50:System.NullReferenceException], 0,=20
> 29, 29, )
> . . . . . . . . . . . . . . ENTER: (wrapper managed-to-native)=20
> System.String:InternalAllocateStr (int)(29, )
> . . . . . . . . . . . . . . LEAVE: (wrapper managed-to-native)=20
> System.String:InternalAllocateStr (int)[STRING:0x9b48f00:]
> . . . . . . . . . . . . . . ENTER: (wrapper managed-to-native)=20
> System.String:InternalStrcpy=20
> (string,int,string,int,int)([STRING:0x9b48f00:], 0,=20
> [STRING:0x9b48f50:System.NullReferenceException], 0, 29, )
> . . . . . . . . . . . . . . LEAVE: (wrapper managed-to-native)=20
> System.String:InternalStrcpy (string,int,string,int,int)
> . . . . . . . . . . . . . LEAVE: System.Text.StringBuilder:.ctor=20
> (string,int,int,int)
> . . . . . . . . . . . . LEAVE:=20
> System.Text.StringBuilder:.ctor (string)
> . . . . . . . . . . . . ENTER: System.Text.StringBuilder:Append=20
> (string)(this:0x9489810[System.Text.StringBuilder HelloWorldSWT.exe],=20
> [STRING:0x9489858:: ], )
> . . . . . . . . . . . . . ENTER:=20
> System.Text.StringBuilder:InternalEnsureCapacity=20
> (int)(this:0x9489810[System.Text.StringBuilder=20
> HelloWorldSWT.exe], 31, )
> . . . . . . . . . . . . . . ENTER: (wrapper managed-to-native)=20
> System.String:InternalAllocateStr (int)(58, )
> . . . . . . . . . . . . . . LEAVE: (wrapper managed-to-native)=20
> System.String:InternalAllocateStr (int)[STRING:0x9742390:]
> . . . . . . . . . . . . . . ENTER: (wrapper managed-to-native)=20
> System.String:InternalStrcpy=20
> (string,int,string,int,int)([STRING:0x9742390:], 0,=20
> [STRING:0x9b48f00:System.NullReferenceException], 0, 29, )
> . . . . . . . . . . . . . . LEAVE: (wrapper managed-to-native)=20
> System.String:InternalStrcpy (string,int,string,int,int)
> . . . . . . . . . . . . . LEAVE:=20
> System.Text.StringBuilder:InternalEnsureCapacity (int)
> . . . . . . . . . . . . . ENTER: (wrapper managed-to-native)=20
> System.String:InternalStrcpy=20
> (string,int,string)([STRING:0x9742390:System.NullReferenceException],=20
> 29, [STRING:0x9489858:: ], )
> . . . . . . . . . . . . . LEAVE: (wrapper managed-to-native)=20
> System.String:InternalStrcpy (string,int,string)
> . . . . . . . . . . . . LEAVE: System.Text.StringBuilder:Append=20
> (string)[System.Text.StringBuilder:0x9489810]
> . . . . . . . . . . . . ENTER: System.Exception:get_Message=20
> ()(this:0x947a2a0[System.NullReferenceException HelloWorldSWT.exe], )
> . . . . . . . . . . . . LEAVE: System.Exception:get_Message=20
> ()[STRING:0x9747b80:Object reference not set to an instance=20
> of an object]
> . . . . . . . . . . . . ENTER: System.Text.StringBuilder:Append=20
> (string)(this:0x9489810[System.Text.StringBuilder HelloWorldSWT.exe],=20
> [STRING:0x9747b80:Object reference not set to an instance of=20
> an object], )
> . . . . . . . . . . . . . ENTER:=20
> System.Text.StringBuilder:InternalEnsureCapacity=20
> (int)(this:0x9489810[System.Text.StringBuilder=20
> HelloWorldSWT.exe], 83, )
> . . . . . . . . . . . . . . ENTER: (wrapper managed-to-native)=20
> System.String:InternalAllocateStr (int)(116, )
> . . . . . . . . . . . . . . LEAVE: (wrapper managed-to-native)=20
> System.String:InternalAllocateStr (int)[STRING:0x90449c0:]
> . . . . . . . . . . . . . . ENTER: (wrapper managed-to-native)=20
> System.String:InternalStrcpy=20
> (string,int,string,int,int)([STRING:0x90449c0:], 0,=20
> [STRING:0x9742390:System.NullReferenceException: ], 0, 31, )
> . . . . . . . . . . . . . . LEAVE: (wrapper managed-to-native)=20
> System.String:InternalStrcpy (string,int,string,int,int)
> . . . . . . . . . . . . . LEAVE:=20
> System.Text.StringBuilder:InternalEnsureCapacity (int)
> . . . . . . . . . . . . . ENTER: (wrapper managed-to-native)=20
> System.String:InternalStrcpy=20
> (string,int,string)([STRING:0x90449c0:System.NullReferenceExce
> ption: ],=20
> 31, [STRING:0x9747b80:Object reference not set to an instance of an=20
> object], )
> . . . . . . . . . . . . . LEAVE: (wrapper managed-to-native)=20
> System.String:InternalStrcpy (string,int,string)
> . . . . . . . . . . . . LEAVE: System.Text.StringBuilder:Append=20
> (string)[System.Text.StringBuilder:0x9489810]
> . . . . . . . . . . . . ENTER: System.Text.StringBuilder:Append=20
> (string)(this:0x9489810[System.Text.StringBuilder HelloWorldSWT.exe],=20
> [STRING:0x8d74f30:], )
> . . . . . . . . . . . . . ENTER: (wrapper managed-to-native)=20
> System.String:InternalStrcpy=20
> (string,int,string)([STRING:0x90449c0:System.NullReferenceException:=20
> Object reference not set to an instance of an object], 83,=20
> [STRING:0x8d74f30:], )
> . . . . . . . . . . . . . LEAVE: (wrapper managed-to-native)=20
> System.String:InternalStrcpy (string,int,string)
> . . . . . . . . . . . . LEAVE: System.Text.StringBuilder:Append=20
> (string)[System.Text.StringBuilder:0x9489810]
> . . . . . . . . . . . . ENTER: (wrapper managed-to-native)=20
> System.Environment:get_NewLine ()()
> . . . . . . . . . . . . LEAVE: (wrapper managed-to-native)=20
> System.Environment:get_NewLine ()[STRING:0x9bd9bf0:
> ]
> . . . . . . . . . . . . ENTER: System.Text.StringBuilder:Append=20
> (string)(this:0x9489810[System.Text.StringBuilder HelloWorldSWT.exe],=20
> [STRING:0x9bd9bf0:
> ], )
> . . . . . . . . . . . . . ENTER: (wrapper managed-to-native)=20
> System.String:InternalStrcpy=20
> (string,int,string)([STRING:0x90449c0:System.NullReferenceException:=20
> Object reference not set to an instance of an object], 83,=20
> [STRING:0x9bd9bf0:
> ], )
> . . . . . . . . . . . . . LEAVE: (wrapper managed-to-native)=20
> System.String:InternalStrcpy (string,int,string)
> . . . . . . . . . . . . LEAVE: System.Text.StringBuilder:Append=20
> (string)[System.Text.StringBuilder:0x9489810]
> . . . . . . . . . . . . ENTER: System.Text.StringBuilder:Append=20
> (string)(this:0x9489810[System.Text.StringBuilder HelloWorldSWT.exe],=20
> [STRING:0x97f0aa0:in (unmanaged) (wrapper managed-to-native)=20
> System.Runtime.InteropServices.GCHandle:GetTarget (int)
> in <0x00004> (wrapper managed-to-native)=20
> System.Runtime.InteropServices.GCHandle:GetTarget (int)
> in <0x00025> System.Runtime.InteropServices.GCHandle:get_Target ()
> in <0x00022> IKVM.Runtime.JNIEnv:GetLocalRefs ()
> in <0x00034> IKVM.Runtime.JNIEnv:UnwrapRef (intptr)
> in <0x00035> Frame:Leave ()
> in <0x00139> org.eclipse.swt.internal.gtk.OS:gtk_main_iteration ()
> in <0x00180> org.eclipse.swt.widgets.Shell:setVisible (bool)
> in <0x00036> org.eclipse.swt.widgets.Shell:open ()
> in <0x00065> Snippet1:Main ()
> ], )
>=20
>=20
>=20
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>=20