[Mono-dev] Problem when running winforms app on arm processor

jaekim jkim0130 at gmail.com
Mon Dec 13 13:48:16 EST 2010

I'm getting this same assertion with an arm processor.  The following code
triggers this exception.

PositionReport.Position position =


mj1856 wrote:
> I have cross compiled mono 2.8 with libgdiplus for the s3c2410 processor I
> am running. It is an arm920t (armv4t architecture).  I use scratchbox with
> a recent codesourcery toolchain.
> I have two test applications that I wrote in visual studio targeting .net
> 2.0.  The first is a console app with a basic "Hello world".  It works
> perfectly.  The second is a winforms app with a single form that has a
> simple label that gets updated with a timer control to show the current
> date and time. (basically a digital clock).  Running it, I get the
> following error:
> * Assertion: should not be reached at tramp-arm.c:48
> Checking /mono/mini/tramp-arm.c, the function in question is
> mono_arch_patch_callsite, which has two blocks of code, where one of them
> is supposed to run.  I'm not sure exactly what it's checking here, but
> neither block gets executed, so it hits the assertion.  Can anyone shed
> some light on what might be the problem?
> One note that may or may not be of interest, but because the codesourcery
> toolchain is multilib, I have to specify -march=armv4t on the CFLAGS
> passed to configure mono.  This appears to be working, as my console app
> works fine.
> I do have a running X server, which I've tested with other native apps, so
> I know at least that part is functional.
> Thanks,
> Matt

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