flan/test/programs/reload-v4.flan
Joseph Ferano 96ab4c9cf0 Retire the per-type printers, since print says all of it
print-str, print-i64, print-f64, print-bytes, print-line and newline leave
the prelude. print and println are the whole printing surface now, and print
is the better call at every one of the sites that used them: it is the same
structural walk without the newline, so the no-newline case the family was
kept for is covered, and it takes the value as it is. The old print-i64
forced an explicit (i64 x) at every call site, because this language widens
nothing implicitly; that cast is gone from 127 places.

Dropping it moves one answer. hash-grid returns u64, and the cast through
the signed printer showed sand-headless's hash as -2851001042534928384.
print routes a u64 through flan_u64_to_bytes, so it now prints
15595743031174623232 — the same 64 bits, read as the unsigned number they
are. The pinned expectation follows the correction.

test-flan-dev.el and test_session.ml both reached for print-line as "a name
the prelude has"; they reach for rand-seed instead.
2026-09-12 05:32:25 +07:00

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;;;; v4 redefines only [added] — itself introduced at run time by v3, so it
;;;; lives in the registry and not in any symbol table.
;;;;
;;;; This is the case that separates a real implementation from a plausible
;;;; one. v3's [bump] is already installed and is not rebuilt here, so it picks
;;;; this up only if its call to [added] goes through a *cell* that both
;;;; modules found by name. Had v3 cached the address of the function instead
;;;; of the address of its cell, everything else would still pass and this
;;;; would silently keep running v3's [added].
(defvar counter i64)
(defvar extra i64)
(defn helper [x i64] i64 (* x 2))
(defn added [] i64
(set extra (+ extra 100))
extra)
(defn bump [] i64
(println "v3")
(set counter (+ counter (added)))
(helper counter))
(defn outer [] i64 (bump))