My machine is OSX Mavericks 64bit: I installed via homebrew: brew install mit-scheme. This website gives the details of the way the install runs. https://github.com/Homebrew/homebrew/blob/master/Library/Formula/mit-scheme.rb (identify-world) gives: Release 9.1.1 || Microcode 15.3 || Runtime 15.7 || SF 4.41 || LIAR/C 4.118 Edwin 3.116
To get this to hang you just ./mit-scheme sans --edit 1] => (sleep-current-thread 100) and mit-scheme-c goes to 100% When I saw the ..-c I remembered that home-brew compiles everything so: I downloaded the binary and: cd /Applications/MIT:GNU Scheme.app/Contents/Resources ./mit-scheme 1] => (sleep-current-thread 100) works as expected I occasionally use large vectors so I'll keep LIAR/C around but switching to LIAR/x86-64 solves the (sleep-current-thread ...) problem.
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