[bug #23039] gdnc crashes on OpenBSD/sparc64 on application connection

[Richard Frith-Macdonald]

Follow-up Comment #18, bug #23039 (project gnustep):

Not much in the way of progress except to confirm that ffi does not appear to
work on bsd and nor does ffcall.  I've gone into the ffcall stuff in some
depth, enough to confirm that the problem is definitely in ffcall rather than
a gdnc bug.  It seems that the ffcall based method invocation fails for adding
an obnserver ... in fact I added an empty method with the same name and
arguments to nsinvocation.m in base/testing, and invoking this empty method
also crashes on bsd/sparc64
This means we can test/produce this bug simply by executing the nsinvocation
test program.  It appears that everything is fine right up to the point where
the code enters the av_call() function.  therefore, the next stage is to get
hold of the ffcall source and debug using a copy of ffcall built from local
source, so that gdb can be used to step through and debug the ffcall code
itsself (confirming that the values passed into it are correct etc).



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