sandbox egg seems to endlessly loop when loaded on chicken 4.4.0

[Mario Domenech Goulart]

It loads fine on 4.3.0 and on 4.3.7, as far as I could test. On 4.4.0 it just hangs and eats CPU after (use sandbox) (using csi -n).

Reported by Vesa Kaihlavirta (vegai) on IRC. I could reproduce it on my machine (Debian stable, x86).

[felix winkelmann]

The problem seems to be an optimizer bug that replaces a call to real-make-safe-environment with a definition that is redefined later.

I have changed the sandbox code to use defstruct, but it seems the test doesn't work. I'm not sure if that was like that before this change.

Please give the current trunk version of the sandbox egg a try.

[felix winkelmann]

The problem was triggered by an incorrect compiler-optimization, which has been removed in fb74f2a13695b275e942de06b384ec72bf791e40 (experimental).