Joseph Ferano
a4c6b996ff
The trio the author decided on 2026-09-20 is now all built: def is CL's defparameter — its initialiser runs on every daemon re-run, unguarded, so an edited initialiser repaints the same storage on C-c C-c plus re-run — defonce (Clojure's name for CL's defvar, per the author) initialises once behind the .init~once. flag, and defconst stays the image. One parse arm reads both forms; the difference is Ast.reinit, carried to Tast.global's grerun. Emit.startup_plan gives a def no guard flag, and Check.check_global lifts every def initialiser — zero and literal included — into global/<n>, so the host's startup reaches it through the function cell and a re-evaluated def swaps it (Session's def_inits; Emit.redefinition declares the cell for a non-sibling target). The old defvar spelling is refused with the rename and both compiling spellings, and every program, test, doc and editor list is swept — except sand.flan, the author's live WIP, whose seven defvar lines are flagged in FIX.org and keep its three dependent tests red on this branch.
10 lines
350 B
Plaintext
10 lines
350 B
Plaintext
;; Three integer operations have no right answer. Each used to be a bare SIGFPE
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;; or an undefined value; each signals ArithError now. The divisor goes through
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;; a global so that constant folding cannot answer it before the backend does.
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(defonce zero i32 0)
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(defn main [] ()
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(println "before")
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(println (/ 10 zero))
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(println "unreachable"))
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