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> From: Richard Kelsey <kelsey@xxxxxxx> > Within the context of this SRFI I don't care about asynchronous > execution (I do care about threads, but as long as C code is not > interrupted asychronously they don't matter). The GC protection > mechanism described in the SRFI is inadequate if GCs can occur > asynchronously. Even if variables 'a' and 'b' are protected, > there is no guarentee that a = b; will not temporarily store the > value of 'b' in some unprotected location such as a register. Ok, I don't care about this srfi anymore. You've been presented simple solutions that eliminate those limitations. I don't think you have any good reason to blow them off that way. -t