On 1 Feb 2012, at 09:10, Fred Kiefer wrote:
> Looks like you found the cause of the problem. We are asking a nil view for
> its frame. I am used to this case crashing on Sparc processors, it is new to
> me that gcc 4.6 now also manages to corrupt the stack on i386 when it has to
> return a structure from a nil call. Somebody will have to write a bug report
> and a test case for gcc here.
I fixed this in clang about a year ago. If you send a structure-returning
message to an object, it inserts a nil check in the caller, so from the
perspective of the programmer it will always return {0}.
There's a slight performance penalty for doing it, but generally I consider
slightly slow code to be better than code that corrupts the stack.
David
-- Sent from my Difference Engine
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